What Is Jar File In Java With Example

Class: A class, in the context of Java, are templates that are used to create objects, and to define object data types and methods. This manifest file has to have a main manifest attribute that defines the path to the class containing our main method. Set the JAVA_HOME environment variable to the root location of the JDK installation directory. Create a Dynamic Web Project RESTful_Example and create a package for our src files “com. This class has only main() method and it print. A file with the JAVA file extension (or less commonly the. In this tutorial, we'll show how to pack a simple Java class as a self-executing JAR and demonstrate the importance of a main manifest attribute for a successful execution. Java Decompiler (JD) could be integrated as well. Proper package names should be used to indicate the function of classes and methods. In fact any library is pretty much a. jar extension contain Java classes and metadata. jar': jar cvfm classes. JAR What is the best/correct file to use with my Controller system? Cause Controller requires a Java Database Connectivity file (also known as a 'JDBC Thin Driver') to connect its several JAVA components with the database server. Jar files may include a plain text file called the Manifest. jar INSIDE your JAR file, because then you will have to use some workarounds which are, in my opinion, not worth it. This jar will be used to compile the client, and also will be placed in the servlet container. logging, commons logging etc. Usually these file format is not only used for archiving and distribution the files, these are also used for implementing various libraries, components and plug-ins in java applications. It is our attempt to make you familiar with the concept of Java ProcessBuilder so that you can use it during software development of your projects. It is used to store classes of java created by the user in order to help the runnable and inference concepts embedded within the language. The examples below use C:\jdk1. JAR : MANIFEST. com - Learn how to do anything and most popular how to do tips step by step - illustrated instructions for everything review. Try running command javac and if you see below result then there isn't. Who uses One-JAR? A number of commercial and open-source projects have chosen One-JAR as their packaging mechanism. To include any of these (other than rt. How to Create a Jar File in Java. POM includes all the configuration setting related to Maven. All the predefined libraries are available in this format. Suppose we have a JavaS W file that references a class in a Java library, such as the StringUtils class in the commons-lang library. JAVA security protects system resources form unauthorized access by untrusted code. com, I would get a cookie that is stored in the file [email protected] These examples are extracted from open source projects. java" import java. Generate Java classes using ‘xjc’ Follow the steps below to generate a set of Java source files from XML schema. Michael Fitzgerald. For better understanding JAR files are ends with the. To convert. jar process Transform the jar file, writing a new jar file to. A java program needs a virtual machine to be executed. This name is case-sensitive, which means you need to capitalize the precise letters that were capitalized in the name for the class definition. It was my first Java project after several years of working with Linux and PHP. If this is a brand new installation, just put it in some convenient empty directory. java files), images etc. class Run a JAR file. java file in it. Java Csv project at SourceForge. Creating JAR Files Creating a new JAR file Setting advanced options Defining the JAR file's manifest Regenerating a JAR File Creating a new runnable JAR file Using the Local History Comparing a Java element with a local history edition Replacing a Java element with a local history edition Restoring a deleted workbench element. How do I compile a jar file in Linux? How to make a JAR file Linux executable? How to Create and Execute a. The DECLARE attribute makes the object a declaration that is not immediately instantiated. 1-somethingElse. JAR files are used in J2EE for packaging EJBs and client-side Java Applications. The AddressBook. It contains default values for most projects. In this tutorial, we will discuss how to delete files from a ZIP Archive using ZPFS (Zip File System Provider) and Java NIO, with a suitable example. getLogger, with the Log4JTest class passed as a parameter to getLogger. A JAR (Java ARchive) is a package file format typically used to aggregate many Java class files and associated metadata and resources (text, images, etc. JAR stands for Java ARchive. This is a special. During the compilation process all the java files in the src directory will be compiled and the. In this tutorial we are going to understand executable jar structure of a Spring boot project. It is a single configuration file that contains the majority of information required. One-JAR is very compact: the class files have an uncompressed footprint of around 70KB. In this tutorial we will see how to create an executable file for a java application, in particular for our game. And here's a big bonus: Learn Java is FREE! The Learn Java lessons are fast, easy, and effective; the app is set up so that you can complete the work in less than three hours. For example, if directory foo contains a. :/mylib/*' MyApp This works for both -classpath options and environment classpaths. This is good progress. We start by exploring a Java DB database, from which we create entity classes. jar" on the Java classpath, as defined in the system property java. In Java if we need to work with several dependent classes it is not recommended to set class path for every individual class. In this tutorial we've seen how to read a file from various locations like classpath, URL or jar files. Java does not provide any standard way to load nested jar files (that is, jar files that are themselves contained within a jar). JAR is based on the popular ZIP algorithm, and mimic the Unix's tar (or tape archive) file format (e. java demonstrating the file transfer from local to remote. java extension. opencsv opencsv 3. java is among the source files. It is loaded on the computers in the Microlab and if you download Java onto your computer, the Java Archive Tool is one of the is included. Preverifying class files for Java Micro Edition. There's nothing magical about packaging Java web apps in an executable JAR file. class file of java then you have to convert it into jar (Java ARchive) file this is most important step. In this ANT tutorial, we will learn to build jar files for our java project. First, the context root can be specified in the WEB-INF/jboss-web. dir and while running the hadoop jar command specify the class name with the package structure, for example home. Once you have correctly installed the Certificate Authority (CA) signed code signing certificate to the keystore that you created, you are ready to start signing code. What is a JAR file in Java. Download Spring webmvc jar: Java Servlet tutorial with example program: Run html file in eclipse using tomcat: Servlet RequestDispatcher example: What is servlet: Difference between servlet and JSP: Life cycle of servlet: Hibernate Many to One tutorial and example Annotation based. If this is a brand new installation, just put it in some convenient empty directory. What is FLUME in Hadoop? Apache Flume is a system used for moving massive quantities of streaming data into HDFS. AnyLogic provides you with the unique ability to use any external Java classes in your model. java file in it. Files#createTempFile(String,String,java. Note how type conversions to basic data types (wrapped and unwrapped primitives and Strings) occur automatically. Optional This tab includes optional parameters for your MIDlet - such as the path to the icon for the entire suite, a description and a MIDlet-Info-URL parameter. In Java, there are TONS of useful built in classes and methods that allow us to do things like: Read the contents of a file / Create a file and populate it with contents. Usually jar files contain class files and some other files like property files, images, applets etc. java demonstrating the keyboard-interactive authentication. Until recently, you needed to use a Java decompiler and all of them were either unstable, obsolete, unfinished, or in the best case all of the above. We simply extract to environnment variable called %programfiles% and build the complete path from there. A java program needs a virtual machine to be executed. HelloWorld. Or you could load user-written plugins at runtime. Under Select an import source, click on J2EE > App Client JAR file. For example, a Java JAR file could be open with either Java Runtime Environment or in an archiving program such as WINRar. The instructions are for bundling the source code (. This is different from packaging which is simply. Java Excel API is a mature, open source java API enabling developers to read, write, and modifiy Excel spreadsheets dynamically. Choose “Runnable JAR File” in popup window. java file (excluding the extension). As it also contains compiled main class (. This Java tutorial will help you understand the key concepts of dependency injection, step by step through simple code example - easy to understand and follow. For example hello. See the Getting Started Guide for instructions as to what to do with these downloads. jar is a collection of all of the core java classes in Java runtime Environment. jar Manifest. xsd I would like to execute this from Java program. JAR is based on the popular ZIP algorithm, and mimic the Unix's tar (or tape archive) file format (e. Java provides strong but flexible support for I/O related to files and networks but this tutorial covers very basic functionality related to streams and I/O. By default, Eclipse Gradle plugin refers to Java 1. Compile lua source or bytecode to java bytecode. xml file: 1. As a synopsis and preview of some of the topics to be covered in this section,. " Step 1: Put this source code into a file named "SimpleBean. Adding another source: To Shade a library is to take the contents files of said library, put them in your own jar, and change their package. jar, and provided that that JAR file has a Main-Class manifest attribute, it will be used as the main entry point. JAR files are often used by programs like Thunderbird, Firefox and SeaMonkey to store program add-ons and program themes. jar': jar cvfm classes. Java Tools Tutorials - Herong's Tutorial Notes - Version 5. jar ‘binary’ files. The jar holds all the compiled classes along with their packages, in addition to a folder named as META-INF which holds a file called MANIFEST. I created a Log4JTest class. ZipInputStream constructors. In this tutorial, we'll demonstrate how easy it is to use Maven and embed Tomcat and Java web apps in an executable JAR file. But I am really confused about the following: When should I include the external jar files through ' Add What is the difference between including jar files in Lib folder and the Java Build Path of Eclipse (IDEs and Version Control forum at Coderanch). Generates starting point code for a server mainline. Download file upload example. Of course, because Java DB is embedded into this application, it must be able to find lib/derby. This can be problematic if you need to distribute a self-contained application that can be run from the command line without unpacking. To perform basic tasks with JAR files, you use the Java Archive Tool provided as part of the Java Development Kit (JDK). jar or kohli_prg1. In this openNLP tutorial, we shall see how to setup openNLP java project to use openNLP API with Eclipse (the process should be same, to other IDEs as well). This site houses links to the documentation, source code repository, issues list and information related to GWT roadmap and release. Here is an example with Oracle JDBC driver:. Putting your program in a JAR allows it to be distributed as a single executable file, saving space and simplifying the download process. A JAR (Java ARchive) file is a file that contains the class, image, and sound files for a Java application or applet gathered into a single file and possibly compressed. Compressed file package for classes and data. In this tutorial, we shall create a module in a Java project in Eclipse IDE and export the Java project to a JAR file. This post is about the Java J2EE web application and explaining what is Web Application and why they are called as WAR files, Standard Directory Structure of Web Application or WAR file and contents of the WAR file. Both environments have the same code-centric developer workflow, scale quickly and efficiently to handle increasing demand, and enable you to use Google’s proven serving technology to build your web, mobile, and IoT applications quickly and with minimal operational. During the compilation process all the java files in the src directory will be compiled and the. keywords ; import java. Make sure that the new Decompiled Class File Editor is the default editor for class files (Preferences > Editors > File Associations > *. I realized I needed to install Java, and did, but now it wont choose java as one of the apps to use to open it. In the example NetBeans 8. JAR, except that the order of jar files is unspecified. 0 and JSP 2. Preverifying class files for Java Micro Edition. ) into one file to distribute application software or libraries on the Java platform. The samples use both Java and C#. import java. In TomEE you'd simply place it in the tomee. JAR files are often used by programs like Thunderbird, Firefox and SeaMonkey to store program add-ons and program themes. :/mylib/*' MyApp This works for both -classpath options and environment classpaths. It is our attempt to make you familiar with the concept of Java ProcessBuilder so that you can use it during software development of your projects. It takes a plain JavaCC grammar file as input and automatically generates the following: A set of syntax tree classes based on the productions in the grammar, utilizing the Visitor design pattern. The examples below use C:\jdk1. xml example as well. out: > java -jar first-java-project. java under com. About Swagger. - all within the same JAR file. class files) and a manifest file (metadata). The JAR file is used to store many types of files like audio file, video file, etc. Input can get more complicated, though, and opencsv gives you the tools to deal with that. Rename the jar file to "Mars. JAR files are the deployment format for Java. The jar holds all the compiled classes along with their packages, in addition to a folder named as META-INF which holds a file called MANIFEST. A file with the JAVA file extension (or less commonly the. All the predefined libraries are available in this format. Creating JAR Files Creating a new JAR file Setting advanced options Defining the JAR file's manifest Regenerating a JAR File Creating a new runnable JAR file Using the Local History Comparing a Java element with a local history edition Replacing a Java element with a local history edition Restoring a deleted workbench element. Follow each step to build an app from scratch, or skip to the end get the source for this article. JAR files are the deployment format for Java. javainterviewpoint folder. I hadn't done this in a while, and I always forget about the option to include a manifest file in the jar file. jar file to windows executable file, there is a good tool called launch4j. In the Installed JREs window, click OK. Rename the jar file to "Mars. Simple Logging Facade for Java (SLF4J) is an abstraction of different logging frameworks (eg. class and then begins execution at the main() method within. Say the JAR file. MF Class-Path referencing a directory Leveraging Java "1. In this tutorial, you’ll learn the basics of building Java applications with Bazel. The jar file is downloaded to "jars" directory which is located the same with helloworld. Use Java 6 wildcard option to include multiple JAR Form Java 1. The examples were created and tested on Ubuntu Linux. And here's a big bonus: Learn Java is FREE! The Learn Java lessons are fast, easy, and effective; the app is set up so that you can complete the work in less than three hours. - Removed the doctype in the docbook doc file, so that it can compile without an internet connection JSmooth 0. In this tutorial, we shall create a module in a Java project in Eclipse IDE and export the Java project to a JAR file. Follow each step to build an app from scratch, or skip to the end get the source for this article. Java does not provide any standard way to load nested jar files (that is, jar files that are themselves contained within a jar). jar jaxb-api. , jar and tar tools have the same command. A file with the. Click on the most recent fitnesse-standalone. Create the Java classes ProducesExample. This example demonstrates how java source code can be organized into packages, compiled, and then bundled into a jar file. Then you can run following command to add service in the Windows Registry. Select Process Definition > Additional Properties, then select Java Virtual Machine. JAR - OJDBC6. POM includes all the configuration setting related to Maven. 2019-10-30 11:11:30,234 [d thread 8] INFO - oject. " Step 1: Put this source code into a file named "SimpleBean. g When you write your program as [code]class Test. A Java Archive, or JAR file, contains all of the various components that make up a self-contained, executable Java application, deployable Java applet or, most commonly, a Java library to which any Java Runtime Environment can link. In this tutorial, we shall create a module in a Java project in Eclipse IDE and export the Java project to a JAR file. XDoclet supports a set of common standard tasks such as web. Until recently, you needed to use a Java decompiler and all of them were either unstable, obsolete, unfinished, or in the best case all of the above. To follow along with this tutorial, you will need Java 1. What is FLUME in Hadoop? Apache Flume is a system used for moving massive quantities of streaming data into HDFS. There are many different types of Oracle JAR file, for example: - OJDBC14. 0 adds several frequently requested features, like support for non-blocking I/O, better start-up performance and automatic iteration over paginated responses. This embedded Tomcat tutorial shows you how to use the Apache Maven plugin to create and run an executable JAR that has Tomcat embedded within it. JAR - OJDBC5. A JAR can contain Java classes and other resources (icons. This manifest file has to have a main manifest attribute that defines the path to the class containing our main method. If Java is already installed then go to step-4 directly. jar file extension is used for Compressed archive file package for Java classes and data. SoloLearn's Learn Java is a comprehensive guide to one of the most popular programming languages in the world. Jar File Download; a /. These tutorials will introduce you to Java programming Language. Note that the username is not sent with the cookie. Java IO Tutorial - Java Jar file « Previous; Next » JAR File Format. If you receive a JAR file, can you find what is the target compiler version for that JAR file to be deployed?. The named file must be a java source code file and must have a. With some browsers, you need to right click (or click and hold) on the link and select "Save file as" from the context menu. Linux example: java -classpath '. To make sure that Derby is available to the servlet container (Tomcat), add derbyclient. What is a JAR file in Java. jar Java library, and a MIT-licensed PHP Java class which may be included by PHP scripts. commons-lang. For example, here is the CollectionType. To simplify the application deployment, all these files could be packaged in one or more JARs too. jar compile schema This will generate the appropriate source files in a package based on the schema's namespace in the provided destination folder. Choose “FileSeparatorExample” class, set export destinations as below picture. class, a Java class file within the jar. Putting your program in a JAR allows it to be distributed as a single executable file, saving space and simplifying the download process. I have a way to detect that malfunctions (reading the log-file of said. In the Generic JVM arguments field, add the -javaagent argument for your newrelic. That’s it! Just test it on one of the Hue example tables: select myUpper(description) FROM sample_07 limit 10 Summary. Suppose we have a JavaS W file that references a class in a Java library, such as the StringUtils class in the commons-lang library. We create a custom class loader to load the jar. The original author is Frank Tang. Example context. This example uses minimum code and configuration so you can use it for sample build. Major changes: The preferences are now listed under Java > Decompilers. jar is the core of the Processing libraries, it has all the code that does the stuff that we are used to doing in Processing, like drawing shapes. That is convenient for such a small project. In this Step by Step Tutorial, I am going to explain how we can add our custom JAVA Code's as a JAR file in our TIBCO project and then how to call Java Class Methods using Java Method activity available in Java Palette. How the data is being written in a class file and the class file format. The following download packages are available. No need to extract those class files into Java class directories. Typically a jar file contains the class files and auxiliary resources associated with applets and applications. FileAttribute[]) 1892 * Files. For example, you can name first layer of the packages by following the package names of standard Java library: programcreek. exe" compiler and "java. jar files won't execute. jar, and provided that that JAR file has a Main-Class manifest attribute, it will be used as the main entry point. I just created an executable jar file for a Java client-side application. , and you can integrate its functionality into your own Java programs. To sign your file, run the following command at the command prompt:. These examples are extracted from open source projects. The archive app will be able to extract the JAR file but there isn't going to be anything in it that you can run. Java Excel API is a mature, open source java API enabling developers to read, write, and modifiy Excel spreadsheets dynamically. Jar File in Linux Terminal? Let’s get started: Step-1) Make sure you have Java install on Linux system. All class objects should have the basic class properties. Open a DOS shell in that folder. 2, users can prevent Java programs from accessing the filesystems of their local computers. The ease and simplicity with which inheritance allows classes to be modified makes re-use of code a reality!. In the Generic JVM arguments field, add the -javaagent argument for your newrelic. jar")); This line executes the program mas without the arguments is useless. And here's a big bonus: Learn Java is FREE! The Learn Java lessons are fast, easy, and effective; the app is set up so that you can complete the work in less than three hours. In this tutorial, you'll learn the basics of building Java applications with Bazel. This class has only main() method and it print. JAR What is the best/correct file to use with my Controller system? Cause Controller requires a Java Database Connectivity file (also known as a 'JDBC Thin Driver') to connect its several JAVA components with the database server. To include any of these (other than rt. class file. Any files already in the archive having the same path name as a file being added will be overwritten. Both JRE and Java SDK include dozens of JARs. jar location is accessible to the application through the api JobConf. jar Usage: java -jar yuicompressor-x. It works under 64-bit systems in Windows, Linux and macOS environments, and can analyze source code intended for 32-bit, 64-bit and embedded ARM platforms. Defining full 8-bit byte data like the key and IV as ASCII strings, hoping they get magically converted by the compiler, will lead to unexpected results. exe file and make a note of its location For example, mine is C:\Program Files\Java\j2re1. lua java -cp lib/luaj-jse-3. Preverifying class files for Java Micro Edition. 0 version of the SDK is a major rewrite of the 1. "jar" is distributed as part of the Sun JDK package. Here are some examples of how to read text files in Java using long method and also shortcuts in recent Java version. The file to choose is /Tutorial/FiboEJB-client. What is FLUME in Hadoop? Apache Flume is a system used for moving massive quantities of streaming data into HDFS. It includes an intelligent program editor, an interactions pane for evaluating program text, a source level debugger, and a unit testing tool. dirs = C: \ Program Files \ java \ jre1. Now go to the runnable jar saved folder. A tutorial on using arrays in java. If you open a Java-Editor project all those windows are reopend. To simplify the application deployment, all these files could be packaged in one or more JARs too. Table of contents: jar is the Java archive tool that packages (and compresses) a set of files into a single archive. This example uses minimum code and configuration so you can use it for sample build. Just expand any jar file for which you don't have the source attached in Eclipse and click on the. You can add them as part of your local maven repositories. How to create JAR file from Java Project 4. A JAR file is a collection of Java class files that contains images, methods, texts, etc into one file. For downloading convenience, the platform-independent jar files are bundled together and provided in both zip format and tar format. -clientjar jar-file-name. The instructions are for bundling the source code (. This example uses minimum code and configuration so you can use it for sample build. jar': jar cvfm classes. Home > Java CSV > Java CSV Code Samples Below are code examples for reading and writing CSV files using the Java CSV library. This is also a better place to add all JAR file required by Java application. It's a plain text file format that's completely readable in a text editor and essential to the entire process of building Java applications. You can put more than one function in a project. , jar and tar tools have the same command-line options). The f option indicates that you want the output to go to a file rather than to stdout. JAR, except that the order of jar files is unspecified. When set to yes, the JAR file is updated with the files specified. Each file is read as a single record and returned in a key-value pair, where the key is the path of each file, the value is the content of each file. It is a single configuration file that contains the majority of information required. util package is imported, Vector cannot be used: System. When a malfunction occurs, only a restart helps. Make sure that the JAR file ends in. java" import java. x: Creating Runnable JAR file with Eclipse Last Updated on Saturday, 17 January 2015 Written by Chad Darby Friday, 28 November 2014 In this blog post, I'll show you how to create an runnable JAR file. What is interesting, the same. If a program has been enclosed in a Jar file called helloWorld. jar lua luac. The advantage of WAR file is it can be deployed easily on client machine in a Web server. Example 1: to archive two class files into an archive called classes. input-file(s) is a space-delimited list of one or more files that you want to add to the JAR file. class files into a single unit called jar and then it will be set to class path. The JAR file is used to store many types of files like audio file, video file, etc. CsvReader JavaDocs File Format. ZIP is an archive file format that supports lossless data compression. A JAR file can be directly included in the class path if you want to access those class files in the JAR file. 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: