Java Get Image Size From Byte Array

We may need this in many scenarios. array without copying - Java and native representations are different. ArrayList objects in bytes: 80 Please enter a class name>java. This is the result of JPEG compression. Vector Approximate size of class java. # re: How to convert a string to a byte array and convert a byte array to a string Thanks for a nice post! It has been a very effective approach which resulted to a profitable output for all who have been fortunate enough to come across. If the array s of size maxlen contains a null byte, the strnlen function returns the length of the string s in bytes. But I didn't know that such initial bytes would also be found in a byte array. Sometimes we need to convert InputStream to byte array in Java, or you can say reading InputStream as a byte array, In order to pass output to a method which accepts byte array rather than InputStream. To make it clear - the BufferedImage can be compressed only when you convert it to byte[] array. , a '[' representing an array, followed by a character representing the primitive data type of array followed by an Identity Hex Code [See this for details]. I was working on a project where I needed to download images from a url and store them on a file system. Take a C printf()-style format string and a variable number of arguments, calculate the size of the resulting Python bytes object and return a bytes object with the values formatted into it. txt' is passed into the constructor of class File. Writes the complete contents of this byte array output stream to the specified output stream argument, as if by calling the output stream's write method using out. size - The size of the DataBuffer bank. program calculates performance metric RMSE, PSNR and Compression Ratio. Constructs a byte-based DataBuffer with a single bank using the specified array, size, and offset. Here: We load a JPG image on the disk into a byte array, and then encode it as a string. Visual Basic Code Snippet - Object to byte array. Convert from String to byte array. - Find element index in array by value - Get array element at index - Get first element of array - Get last element of array - Get maximum element from array - Get minimum element from array - Get the size of an array - Insert item at array index - Join array elements using separator - Loop through array - Loop through array with index. This script also give image property like actual image width and height in pixels. ArrayList objects in bytes: 80 Please enter a class name>java. Width Height Color (black & white,. But i found that it just able to receive a set of data that < 1024bytes, i done that by uploading an image. String(byte[] bytes) - Constructs a new String by decoding the specified array of bytes using the platform's default charset. How to get byte array from Java String sample code examples - Java String Programs. ), but is not exactly the same as an array and lacks some of an array's built-in methods (such as. Actually the image which is captured is shown in the form of Base64 string. The hardware combination is a rather bad choice to display a picture on a web page. dataArray must have at least offset + size elements. This article explains you on how to convert image to byte array, stream to byte array, bytearray to stream and load them as image. Pixels in images are commonly represented as byte data. We can find size of structure by observation ,by using sizeof operator and without using sizeof operator. ByteArrayOutputStream. Only the first size elements of each array should be used by accessors of this DataBuffer. What is the difficulty level of this exercise?. I know that these bytes are encoded in pairs of two and i want to get the file (png, bmp, tif. Tags: low latency, high throughput, finance, CPU optimization, low level memory access in Java. How to Compress and Uncompress a Java Byte Array Using Deflater/Inflater Here is a small code snippet which shows an utility class that offers two methods to compress and extract a Java byte array. Suppose that the images are stored in the database in BLOB format (Binary Large Object), and your application needs to display the images on web pages without saving the images somewhere on the server's disk. Then you use ByteBuffer. Convert BufferedImage to Byte Array. Output: [111 bbbb london, 131 aaaa nyc, 121 cccc jaipur] Why does Object. Constructs a byte-based DataBuffer with a single bank using the specified array, size, and offset. If you change number of element in array, length function not get effect. After that we will show how to use that byte array to display image on web page. We then manually do step 2 to get the contents at that address--namely the value of the first element of our array. At times, however, you need to display images that are available as raw binary data. I have noticed that there are different types of "byte arrays", I need the type that I can drop straight into a file and hit save as If you right click on a. Are you certain that length == bytes. So here is the complete step by step tutorial for Convert Drawable image to Byte Array in android. You can then grab the width and height from the Texture2D instance and pass it to the Sprite. How to Generate MD5 Hash in Java - String Byte Array Digest Example There are multiple ways to generate the MD5 hash in Java program. This article explains you on how to convert image to byte array, stream to byte array, bytearray to stream and load them as image. In this post, we will discuss how to convert InputStream to byte array in Java. Converting a byte array to a string in C# is easy. Sometimes you want to keep data in a single, consecutive array for fast and easy access, but need the array to be resizable, or at least expandable. If you're reading the text version via Usenet, I do apologize that parts of it may be less intelligible than possible in HTML. Image to Byte Array using C# and VB. Data greater than 4000 bytes are always stored externally and you can specify a different tablespace and storage characteristics. Java Extract image's width, height, color and type from byte array Java Filter image color with customized image filter Java Get color of each pixel of an image using BufferedImages. Vector) instead of a native array. Get File-Size. size - The size of the DataBuffer bank. jpg) and program will read it from the file and will convert it to a byte array. The hardware combination is a rather bad choice to display a picture on a web page. Here's the image:. no way telling the shape from the pixels only. I want to know how to convert the byte array to Image. This article was triggered by Linkedin Discussion. Fortunately, it was a dp question and I didn't need an array of that size. We can convert it to a string with ToBase64String. Developers can convert an image to a byte array in C# since bitmaps and other images are made up of bytes. Java get file size using File class. Net Image control without using Generic HTTP Handler. describes an indirect context model with a table size of 64 * 2 5 bytes. This example shows how to convert an image into a two-dimensional LabVIEW array. In Java, you can’t convert between an integer type and a boolean type. If you want to know size or length of array than use inbuilt in java function Syntax:-array_name. The reason this is important is that when the inspected code turns the byte array under review into an image, and I use the debugger to "Show Image" the image flashes on the monitor and immediately disappears - leading me to believe there's something wrong with it that is hidden from me by the debugger failing silently. Topic: JavaScript / jQuery Prev|Next. When working with OpenCV Python, images are stored in numpy ndarray. jpg")); ByteArrayOutputStream baos = new ByteArrayOutputStream. BSON [bee · sahn], short for Bin­ary JSON, is a bin­ary-en­coded seri­al­iz­a­tion of JSON-like doc­u­ments. But when i retrieve the byte[] from the db, am getting some junk data. The first element in the array is [0], the second element is [1], and so on. I know that these bytes are encoded in pairs of two and i want to get the file (png, bmp, tif. A byte array is just an array of bytes. Accessing Java Arrays Similar to jstring, jarray represents references to Java arrays and cannot be directly accessed in C. Best way to do this via "UTF-8" decoding. Java Network. Binary data can be stored in a table using the data type bytea or by using the Large Object feature which stores the binary data in a separate table in a special format and refers to that table by storing a value of type oid in your table. This means the first element in the. When Texture2D. Can we Determine Size of an Array using sizeof Operator and strlen() Function in C Language? Answer: Let’s learn this by considering an example, and analysing it’s output when program is run on Linux System. Array size, returned as a row vector of nonnegative integers. Java provides a class ByteBuffer which is an abstraction of a buffer storing bytes. One this page you can find a simple guide to reading and writing files in the Java programming language. So before calling this method to get file size in java, make sure file exists. please give me the sample code initialise array by reading from file - Java Beginners. 0 through 4. This value can be interpreted as a big-endian 1 and thought of as a magic number to represent the 65536 page size. So the first code you supplied is great for that purpose. So here is the complete step by step tutorial for Convert Drawable image to Byte Array in android. 0 ? Below is a sample code snippet on how to convert […]. How to get byte array from Java String sample code examples - Java String Programs. To make it clear - the BufferedImage can be compressed only when you convert it to byte[] array. This is all possible because image can be converted into sequence of byte array. A Java Array Object does not have a method to get it's length. In that case, there's probably nothing wrong with "sniffing" the content type. If you get the image by the serial interface you already got a byte array. In this blog you will learn how to Convert a Bitmapimage into a Byte Array and Vice Versa in UWP Platform. Java: convert a file to a byte array, then convert byte array to a file. I have seen many examples but they got image from URL and store in java. Questions: My ajax call will get an image from the server as a byte array. A blog about Java Programming Language. The example program has been tested and output is shared in the same post. From the Java Specification, an Array has a "public final length" field that contains the number of it's components. Read the image file and store as a BufferedImage Reading an image file in Java beyond being an. Java Forums: Java Blog Reading a File into a Byte Array Print; Reading a file into a byte array can be done as follows: (file); // Get the size. The encoder does not add any line feed (line separator) character. Vector) instead of a native array. Approximate size of class java. 962 * 963 *. net using c#, vb. , a '[' representing an array, followed by a character representing the primitive data type of array followed by an Identity Hex Code [See this for details]. Convert from String to byte array. It mentions that a Java Array has a property declared as public final length; Since we can't change the size of an array when created, the value of this property does not change in the lifetime of the array object. The low 7 bits index a table of 16 byte arrays, and the next 8 bits are the checksum to detect collisions. The image I am handling is of 8bppindexed format and if I rotate using Image. Instead of checking for an image type by looking for the extension in the file name it's best to look at the byte array making up the file and compare it to known image type byte arrays. This script also give image property like actual image width and height in pixels. Processing Contents of Uploaded Files with Java Servlet / JSP If you do not want to save the uploaded file directly but to process it, the get() and getInputStream() methods can help you. length is to return the number of bytes to represent the string with the specified encoding. Yuu can get picture properties with "width x height" format in a string format. Optimize your images and convert them to base64 online. Note that all of the collections in the previous example contain immutable objects. This method should only be used to convert binary data which was the result of encoding text with the given encoding. In this tutorial I will show you how to implement a. When working with OpenCV Python, images are stored in numpy ndarray. Sometimes you want to keep data in a single, consecutive array for fast and easy access, but need the array to be resizable, or at least expandable. Only elements offset through offset + size - 1 should be used by accessors of this DataBuffer. If you provide a source image that contains multiple faces, the service detects the largest face and uses it to compare with each face that's detected in the target image. Java provides ImageIO class for reading and writing an image. Image object. If performance is important (ex. The first element in the array is [0], the second element is [1], and so on. readString()), 640, 480, 3); the paramaters of the. Sets the size of the byte array to size bytes. Image processing means many things to many people, so I will use a couple of examples from my research to illustrate. Sometimes we need to convert InputStream to byte array in Java, or you can say reading InputStream as a byte array, In order to pass output to a method which accepts byte array rather than InputStream. Star 0 Fork 0; * In this function the first part shows how to convert an image file to * byte array. String class also has a method to convert subset of byte array to String. The sample I posted opens a bitmap from a folder and allows you to read individual bytes (by reading bitmap. I have constructed a 2d array with the corresponding class type for each one of them, each one respectively called WeaponAreaLimits, FoodAreaLimits and TrapAreaLimits. The ArrayList holds a pointer to a single Object array, which grows as the number of elements exceed the size of the array. Only elements offset through offset + size - 1 should be used by accessors of this DataBuffer. By dePixelstech, this page is to provide vistors information of the most updated technology information around the world. Therefore this function is equivalent to (strlen (s) < maxlen? strlen (s) : maxlen) but it is more efficient and works even if s is not null-terminated so long as maxlen does not exceed the size of s. # re: How to convert a string to a byte array and convert a byte array to a string Thanks for a nice post! It has been a very effective approach which resulted to a profitable output for all who have been fortunate enough to come across. In this tutorial I will show you how to implement a. It is possible that there exists concrete implementations of Java Arrays classes, such as LinkedList and TreeMap, that use arrays as underlying data storage. This default size can be overridden by using the gnu. jpg")); ByteArrayOutputStream baos = new ByteArrayOutputStream. The example program has been tested and output is shared in the same post. Besides, it will use 4 * C bytes for entries array, where C is the map capacity. Net The Image File is read into an Image object using the FromFile function. Sometimes we need to convert Strings into Bytes because of several reasons like, to save content to the file, sending data over a network or it can be any other reason. In this tutorial we are converting bitmap image to byte array with the use of InputStream, Bitmap, ByteArrayOutputStream, and byte[ ]. Read the image file and store as a BufferedImage Reading an image file in Java beyond being an. In this article I will show you how to read PNG files in Java. You extract the data in two steps: Call the getBlob method of the Statement class to retrieve a java. Doc is a professional Word. How to Compress and Uncompress a Java Byte Array Using Deflater/Inflater Here is a small code snippet which shows an utility class that offers two methods to compress and extract a Java byte array. Therefore this function is equivalent to (strlen (s) < maxlen? strlen (s) : maxlen) but it is more efficient and works even if s is not null-terminated so long as maxlen does not exceed the size of s. sum contains addition of all the elements of the array. Thanks in advance Toby. Methods inherited from class java. Working Skip trial 1 month free. Is it possible to send both these byte arrays at the same time through the Output stream? How do. Array size, returned as a row vector of nonnegative integers. Become familiar with different aspects of object immutability in Java Implement the correct practices and clean code techniques; Who this book is for. java FAQ List This is a Java FAQ list for the comp. I will show you how to do this using ImageIO, and secondly using JDeli. The sample I posted opens a bitmap from a folder and allows you to read individual bytes (by reading bitmap. The default value of the elements in a Java long array is 0. This operation could be applied for any binary files or binary arrays. A BLOB (Binary Large OBject) is essentially an array of bytes (byte[]), stored in the database. When just the array's name is provided, only step 1 occurs with an array. This function can be use to convert any object to byte array and store them in database. You shouldn't be able to pass any 1dim non-byte array on arbitrary without copying, since even though there is a 'copy' flag which should tell JVM whether to make copy of array or not, numbers are still have to be potentially converted into native representation on extraction. Encode a byte array to hex string: 11. (The only exception is that Java does provide the 'char' type, which is a 2 byte representation of unicode, instead of the C 'char' type, which is 1 byte ASCII. toFXImage(bufferedImage, null) On my machine it is about 6 times faster than rendering image to a png then parsing that with JavaFX. JavaScript is a high-level, dynamic, untyped programming language, supporting multiple paradigms including object-oriented, imperative and functional programming styles. The image thus created is returned in this method. I have seen many examples but they got image from URL and store in java. The image below demonstrates this mapping. Approximate size of class java. Java Network. For some purpose like transfering an image through RestfulAPI or saving an image to a DataBase, We need Encoder (Decode) the image to Base64. Though you can use a “for” loop with the iteration operator, the code becomes much more readable with for-each loop when dealing with huge numbers. Write the image to the ByteArrayOutputStream object created above using the write() method of the ImageIO class. Another (faster) solution is to re-allocate the array with a different size and to copy the contents of the old array to the new ar. This article was triggered by Linkedin Discussion. Returns the slice labels as an array of Strings. This byte array converter can be made easily in Java which we will discuss here. As you may already know, Array objects grow and shrink dynamically and can have any JavaScript value. Problem: i'm working with an array filled of consecutive bytes that describe the pixels of an image. List of all java. Trasform a Bytes Array to Float Array for FFT - posted in Java: Hello there, Im experiencing a problem in opening an audio file and then using it as a float array. If you would like to convert back from the byte array to an buffered image object, you need to use the ByteArrayIntputStream class to read the byte array in to the ByteArrayIntputStream object. Sets the size of the byte array to size bytes. Yuu can get picture properties with "width x height" format in a string format. One approach is to use java. Therefore this function is equivalent to (strlen (s) < maxlen? strlen (s) : maxlen) but it is more efficient and works even if s is not null-terminated so long as maxlen does not exceed the size of s. 0 to allow the saving of multi-page TIFF files to a byte array in Java. But ideally I'd like to keep the file size down (the main reason is a larger file takes alot longer to process in the algorithm), and so it would be nice. I don't know the reasoning behind this attribute approach, but you would logically expect there to be a Java array length method, but for some reason this is a public field/attribute, and not a length method. create 1024 in (try Buffer. Returns the size of this image in bytes. Writes the complete contents of this byte array output stream to the specified output stream argument, as if by calling the output stream's write method using out. Width Height Color (black & white,. I have seen many examples but they got image from URL and store in java. Warning! For accurate results, please disable Firebug before running the tests. Get YouTube without the ads. Only elements offset through offset + size - 1 should be used by accessors of this DataBuffer. I have to do something in PHP for "cycle" which will generate a table with vertical counting cells. ArrayList objects in bytes: 80 Please enter a class name>java. Thanks Sachin Pithodesachin · Hi, you have to read the header information of image stream to. size - The size of the DataBuffer bank. Drag & Drop your files, copy to clipboard with a click and use the result in HTML and CSS. The Java run-time environment is free to use whatever size it wants, as long as the types behave as you declared them. This method is overloaded and we can also pass Charset as argument. Let's use this to produce a. I tried to convert a ByteBuffer without a backing array to Xamarin byte array. In the tutorial, JavaSampleApproach will guide you how to use Java 8 for converting. Before we look into an example program to get file size, we have a sample pdf file with size 2969575 bytes. Bytes written to w are encoded using the specified byte order and read from successive fields of the data. Java: convert image to byte array, convert byte array to image. Blob object; Call either getBinaryStream or getBytes in the extracted Blob object to retrieve the java byte[] which is the Blob object. Visual Basic Code Snippet - Object to byte array. then: Image im = Toolkit. You will probably have to experiment with different byte array size and measure read performance, to find the optimal byte array size. I'll cover the following topics in the code samples below: Convertbitmap, C#, Byte, Array, and MemoryStream. And there you have it - 3 quick ways to transform a java Reader into a byte array. Thanks Sachin Pithodesachin · Hi, you have to read the header information of image stream to. But how about retrieving such image from backend? Well the logic is similar, so considering you have the byte array returned from SOAP, you will create new php file named image. Convert Java Byte Array To. I'm trying to get the server to send both String; namely String dateString = "the date"; and the date and time from the Date Object too. each element of array is given i + j value in loop. It is an array of bytes, often referred to in other languages as a "byte array". Java email validation. Problem: i'm working with an array filled of consecutive bytes that describe the pixels of an image. Image Byte Array Conversion using Java. Red Hat Enterprise Linux 4 CentOS Linux 4 Oracle Linux 4 Red Hat Enterprise Linux 5 CentOS Linux 5 Oracle Linux 5 Mozilla Firefox 3. ByteArrayOutputStream. IllegalArgumentException - if there are fewer than 2 or more than 4 channel images, if channel images are not the same size, if the channel images are not 8 or 16 bit grayscale, or the desired PixelFormat doesn't match the bit depth of the channel images. Values stored in the byte array(s) of this DataBuffer are treated as unsigned values. The value can be a positive number or zero. image in VB. !NULL may be used for array concatenation, array indexing, and for comparison. Our second example, IntArray. Hello everyone, In this post I am attaching the simple program about Image Byte Array Conversion using Java. We will catch each and every point as we move forward. How to convert bytes arrays type of double to image? newsreader/view_thread/253270 suggests that to be getting the image size, you should be working with a Java. The low 7 bits index a table of 16 byte arrays, and the next 8 bits are the checksum to detect collisions. In this article I will show you how to read PNG files in Java. create 1024 in (try Buffer. String 's get bytes method can be used to convert String to byte array in java, You can also specify charset format by using getBytes(charsetName). It is an array of bytes, often referred to in other languages as a "byte array". The size of an array must be specified by an int value and not long or short. Read the image file and store as a BufferedImage Reading an image file in Java beyond being an. 0 ? Below is a sample code snippet on how to convert […]. It uses a linear interpolation strategy, where each pixel in image i is a weighted average of the corresponding pixels in the source and target images. We do this with a call to putImageData(), to which we pass the image data object, plus an X and Y offset at which to stamp the new data. You can configure the image scaling process using you own custom algorithm. Sometimes we need to convert InputStream to byte array in Java, or you can say reading InputStream as a byte array, In order to pass output to a method which accepts byte array rather than InputStream. java FAQ List This is a Java FAQ list for the comp. Parameters: dataArray - The byte array for the DataBuffer. Such as codes A100, B102… 2000 bytes Default and. get byte or memory size of array,list,collections in java In java lot of time we will come across the scenerio where in which we need to find the how much memory used by given list. Outer loop is responsible for rows and the inner loop is responsible for columns. Read file to byte array: 22. In this post I will show you how you can download a file from AZURE BLOB storage as byte array. I will be using Apache Commons Codec library to achieve the 'Convert Image to String and String to Image in Java'. Warning! For accurate results, please disable Firebug before running the tests. 962 * 963 *. it doesn't matter) in any way, not necessarily in the most efficient. The only thing I may be missing is how to get an image size in bytes so I know how many bytes are being transferred over the Socket. It considers an array as a typical object and returns default string, i. You can use these arrays with programs for embedded systems with microcontrollers to output graphics on monochromatic LCD's or thermal printers (like Arduino with the Adafruit mini printer , which I needed this for). You cannot directly manipulate the contents of an ArrayBuffer ; instead, you create one of the typed array objects or a DataView object which represents the buffer in a specific format, and use that to read and write the contents of the buffer. keySet null 16 4 Collection AbstractMap. We previously used ImageIO to read PNG files, but over time became increasingly dissatisfied as we discovered more and more issues. 0 to allow the saving of multi-page TIFF files to a byte array in Java. In that case, there's probably nothing wrong with "sniffing" the content type. Red Hat Enterprise Linux 4 Red Hat Enterprise Linux 5 Race condition in backend/ctrl. How to convert an image to byte array in Java. Besides, it will use 4 * C bytes for entries array, where C is the map capacity. This Java example shows how to get the size of a particular file in bytes, KB and MB using length method of Java File class. This site uses cookies for analytics, personalized content and ads. FromBase64String(x); MemoryStream ms = new MemoryStream(imageBytes, 0,imageBytes. Random object to fill the data image byte array with random values. The reason this is important is that when the inspected code turns the byte array under review into an image, and I use the debugger to "Show Image" the image flashes on the monitor and immediately disappears - leading me to believe there's something wrong with it that is hidden from me by the debugger failing silently. In below example I am first reading an image from some location and then converting it to string. Processing Forum Recent Topics. Thus, the array size is 256 or 65536, and the bin width in uncalibrated units is 1. NET library specifically designed for developers to create, read, write, convert and print Word document files from any. Length applies to a Java array, and size applies to a Java ArrayList collection object. I've thrown together an image utility, building off of the work of others, to expose a few basic image manipulation functions, namely: open (from a file, URL, InputStream or byte array), save to file, soften, resize, and resize to square. In this article, we will discuss various techniques of converting int to a byte array and vice versa, int array to byte array and so on. In this section, we are going to show the array of bytes from the specified file. The Multi Dimensional Array in Java programming language is nothing but an Array of Arrays (Having more than one dimension). Plus Size Image Viewer Plus Size Image Viewer automatically adds a caption beneath certain images that when clicked on launches a "plus size" version of the image. 0_91, [code]public class Checker { public static void main(String[] args) { int[] arr = new int[Integer. , the array has more elements than the list), the element in the array immediately following the end of the list is set to null. Another (faster) solution is to re-allocate the array with a different size and to copy the contents of the old array to the new ar. In this i firstly converted that image into bitmap and convert into bytearray. This script also give image property like actual image width and height in pixels. Instead of checking for an image type by looking for the extension in the file name it's best to look at the byte array making up the file and compare it to known image type byte arrays. Hello everyone, In this post I am attaching the simple program about Image Byte Array Conversion using Java. Returns a hexadecimal representation of the given byte array. BlockedNumbers; Browser; CalendarContract; CalendarContract. ) you need to use a few if statements. That’s all for java get file size programs. Processing Contents of Uploaded Files with Java Servlet / JSP If you do not want to save the uploaded file directly but to process it, the get() and getInputStream() methods can help you. JAVA EXAMPLE PROGRAMS: How to get byte array from a string object in java?. In C and C++, the unsigned modifier can be added to a integer variable declaration. jQuery MaxLength for INPUT and TEXTAREA fields. Read the image using the read() method of the ImageIO class (by passing the ByteArrayInputStream objects to it as a parameter). each element of array is given i + j value in loop. Print a PDF loaded in memory (byte array) without saving it as a file / Java PDF Library [Deriving from jPDFProcess] / jPDFPrint: Print PDFs / Print a PDF loaded in memory (byte array) without saving it as a file. 000000000 +0000 +++ new/make/Makefile 2012-02-22 18:38:03. NET Java uses signed numbers for a Byte array where as VB dosent. Java,UTF8,String,Encoding,Sample. Image processing means many things to many people, so I will use a couple of examples from my research to illustrate. Byte Array To BitmapImage Converter & IRandomAccessStream Implementation For Windows 8 Metro After writing the application for Windows Phone, I wanted to bring the same feature with Windows 8 Metro but unfortunately, metro didn’t support the same converter for the reason that BitmapImage can no more read from Stream but only from. I was working on a project where I needed to download images from a url and store them on a file system. So, a HashMap with size = S has to spend 32 * S bytes for entries storage. These images won't reside on the server as physical files. c in KDM in KDE Software Compilation (SC) 2. The only thing left to do is to "paste" the pixels back onto the canvas so that we see them. Index 0 and 1 contains respectively the width and the height of the image. The fact-checkers, whose work is more and more important for those who prefer facts over lies, police the line between fact and falsehood on a day-to-day basis, and do a great job. Today, my small contribution is to pass along a very good overview that reflects on one of Trump’s favorite overarching falsehoods. Namely: Trump describes an America in which everything was going down the tubes under  Obama, which is why we needed Trump to make America great again. And he claims that this project has come to fruition, with America setting records for prosperity under his leadership and guidance. “Obama bad; Trump good” is pretty much his analysis in all areas and measurement of U.S. activity, especially economically. Even if this were true, it would reflect poorly on Trump’s character, but it has the added problem of being false, a big lie made up of many small ones. Personally, I don’t assume that all economic measurements directly reflect the leadership of whoever occupies the Oval Office, nor am I smart enough to figure out what causes what in the economy. But the idea that presidents get the credit or the blame for the economy during their tenure is a political fact of life. Trump, in his adorable, immodest mendacity, not only claims credit for everything good that happens in the economy, but tells people, literally and specifically, that they have to vote for him even if they hate him, because without his guidance, their 401(k) accounts “will go down the tubes.” That would be offensive even if it were true, but it is utterly false. The stock market has been on a 10-year run of steady gains that began in 2009, the year Barack Obama was inaugurated. But why would anyone care about that? It’s only an unarguable, stubborn fact. Still, speaking of facts, there are so many measurements and indicators of how the economy is doing, that those not committed to an honest investigation can find evidence for whatever they want to believe. Trump and his most committed followers want to believe that everything was terrible under Barack Obama and great under Trump. That’s baloney. Anyone who believes that believes something false. And a series of charts and graphs published Monday in the Washington Post and explained by Economics Correspondent Heather Long provides the data that tells the tale. The details are complicated. Click through to the link above and you’ll learn much. But the overview is pretty simply this: The U.S. economy had a major meltdown in the last year of the George W. Bush presidency. Again, I’m not smart enough to know how much of this was Bush’s “fault.” But he had been in office for six years when the trouble started. So, if it’s ever reasonable to hold a president accountable for the performance of the economy, the timeline is bad for Bush. GDP growth went negative. Job growth fell sharply and then went negative. Median household income shrank. The Dow Jones Industrial Average dropped by more than 5,000 points! U.S. manufacturing output plunged, as did average home values, as did average hourly wages, as did measures of consumer confidence and most other indicators of economic health. (Backup for that is contained in the Post piece I linked to above.) Barack Obama inherited that mess of falling numbers, which continued during his first year in office, 2009, as he put in place policies designed to turn it around. By 2010, Obama’s second year, pretty much all of the negative numbers had turned positive. By the time Obama was up for reelection in 2012, all of them were headed in the right direction, which is certainly among the reasons voters gave him a second term by a solid (not landslide) margin. Basically, all of those good numbers continued throughout the second Obama term. The U.S. GDP, probably the single best measure of how the economy is doing, grew by 2.9 percent in 2015, which was Obama’s seventh year in office and was the best GDP growth number since before the crash of the late Bush years. GDP growth slowed to 1.6 percent in 2016, which may have been among the indicators that supported Trump’s campaign-year argument that everything was going to hell and only he could fix it. During the first year of Trump, GDP growth grew to 2.4 percent, which is decent but not great and anyway, a reasonable person would acknowledge that — to the degree that economic performance is to the credit or blame of the president — the performance in the first year of a new president is a mixture of the old and new policies. In Trump’s second year, 2018, the GDP grew 2.9 percent, equaling Obama’s best year, and so far in 2019, the growth rate has fallen to 2.1 percent, a mediocre number and a decline for which Trump presumably accepts no responsibility and blames either Nancy Pelosi, Ilhan Omar or, if he can swing it, Barack Obama. I suppose it’s natural for a president to want to take credit for everything good that happens on his (or someday her) watch, but not the blame for anything bad. Trump is more blatant about this than most. If we judge by his bad but remarkably steady approval ratings (today, according to the average maintained by 538.com, it’s 41.9 approval/ 53.7 disapproval) the pretty-good economy is not winning him new supporters, nor is his constant exaggeration of his accomplishments costing him many old ones). I already offered it above, but the full Washington Post workup of these numbers, and commentary/explanation by economics correspondent Heather Long, are here. On a related matter, if you care about what used to be called fiscal conservatism, which is the belief that federal debt and deficit matter, here’s a New York Times analysis, based on Congressional Budget Office data, suggesting that the annual budget deficit (that’s the amount the government borrows every year reflecting that amount by which federal spending exceeds revenues) which fell steadily during the Obama years, from a peak of $1.4 trillion at the beginning of the Obama administration, to $585 billion in 2016 (Obama’s last year in office), will be back up to $960 billion this fiscal year, and back over $1 trillion in 2020. (Here’s the New York Times piece detailing those numbers.) Trump is currently floating various tax cuts for the rich and the poor that will presumably worsen those projections, if passed. As the Times piece reported: