In the IntelliJ IDEA, clicks on the download sources, and it shows the error Cannot connect to the Maven process. Terminal Cannot connect to the Maven process. Try again later. If the problem persists, check the Maven Importing JDK settings and restart IntelliJ IDEA Tested with IntelliJ IDEA 2022.2.1 (Community Edition) Build #IC-222.3739.54, built on […]
This article shows how to decompile Java class in Eclipse IDE, IntelliJ IDEA, and command line. Table of contents 1. Java Decompilers 2. Decompile Java class in Eclipse IDE 3. Decompile Java class in IntelliJ IDEA 4. Decompile Java class in Command Line (FernFlower) 5. References 1. Java Decompilers Java decompiler can convert .class files […]
This article shows how to convert a Java project to a Maven project in IntelliJ IDEA. Table of contents 1. A Non-Maven Project 2. Add Framework Support – Maven 3. Update the default pom.xml 4. Reload the Maven project 5. References P.S Tested with IntelliJ IDEA 2021.1.1 1. A Non-Maven Project A non-Maven project (without […]
In IntelliJ IDEA, we can press on the keyboard SHIFT key twice to open a search everywhere windows to quickly find a class or a file. Other shortcuts, seldom use, prefer double clicks on SHIFT key to open the search windows. Ctrl+N – finds a class by name. Ctrl+Shift+N – finds a file or directory […]
This article shows you how to make IntelliJ IDEA support and run Python. P.S Make sure Python SDK is installed, later we need to link this Python SDK to IntelliJ IDEA. 1. Plugins In IntelliJ IDEA. File -> Settings -> Plugins. 2. Python Community Edition Clicks Marketplace, search python, install the Python Community Edition by […]
In IntelliJ IDEA, we need to enable this auto-generate serialVersionUID option manually. P.S Tested with IntelliJ IDEA 2019.3.4, it should work the same in other versions. Intellij IDEA Settings File -> Settings -> Editor -> Inspections -> Java -> Serialization issues: Find serialization class without serialVersionUID and check it. Back to the editor, clicks on […]
In this article, we will show you how to attach the JDK source code into the IntelliJ IDEA? By default, IntelliJ IDEA doesn’t come with JDK source code, and the auto decompile feature is useful; however, we still need to jump in the source code to read the source code comments or docs to understand […]
This article shows you how to update the IntelliJ IDEA to use the new JDK 13. 1. On the menu, clicks File -> Project Structure 2. Platform Settings -> SDKs, add and point to the JDK 13 installed folder. 3. Project Settings -> Project, change both Project SDK and Project language level to JDK 13. […]
In IntelliJ IDEA, Maven builds a project, and hits the following warning message? Warning:java: source value 1.5 is obsolete and will be removed in a future release Warning:java: target value 1.5 is obsolete and will be removed in a future release To fix it, add maven-compiler-plugin plugin. pom.xml <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.8.0</version> <configuration> […]
In IDEA, clicks on the method name, press CTRL + Q to show the method signature on a pop up. Alternatively, press CTRL + P to show the available parameters.
In IDEA, you can type sout and press Tab to generate System.out.println automatically. Tips : To show all shortcuts, press CTRL + J References Intellij IDEA – Code completion Intellij IDEA – default static void main shortcut
In IDEA, you can type psvm and press Tab to generate the public static void main(String[] args) automatically. To show all shortcuts, press CTRL + J References Intellij IDEA – Code completion Intellij IDEA – System.out.println shortcut
Make some changes in the build.gradle file, but the changes never apply or sync to the IDEA (Tested with 2016.3) 1. Using IDEA plugin build.gradle apply plugin: ‘java’ apply plugin: ‘idea’ apply plugin: ‘org.springframework.boot’ 2. Make changes and issue the Gradle clean and idea command. Console $ gracle clean idea $ gradle cleanIdea idea $ […]
For example, how to find out this FileUploadBase class belongs to which JAR or dependency? //… import org.apache.tomcat.util.http.fileupload.FileUploadBase; @ExceptionHandler(FileUploadBase.FileSizeLimitExceededException.class) public String handleError3(Exception e, RedirectAttributes redirectAttributes) { redirectAttributes.addFlashAttribute("message", e.getCause().getMessage()); return "redirect:/uploadStatus"; } Solution In IntelliJ IDEA, double clicks on the class name and press CTRL + n (win/*nix) or CMD + n (mac) to prompt out […]
In Eclipse, you press CTRL + SHIFT + O “Organize Imports” to import packages automatically. For IntelliJ IDEA, if you press CTRL + ALT + O “Optimize Imports”, it just removes some unused imports, never imports any package. And the worst is you need click on the class name and press ALT + ENTER keys […]
This article shows you how to run or debug a web application on Tomcat server, using IntelliJ IDEA. Note Unlike Eclipse IDE, there is always a ‘server view’ to configure the add server, IntelliJ do things differently, you need to add an “artifact (war file)” first, then only the “server view” will be displayed at […]
CTRL + H is IDEA equivalent of Eclipse show class hierarchy. Clicks on a class and press CTRL + H, it will display the subtypes hierarchy of the class. 1. Windows or & *nix = CTRL + H 2. Mac OSX Control + H References Show class hierarchy in Eclipse IDE
In Eclipse, just include the Spring Boot Dev Tools dependency, then the hot swapping and static file reload will be enabled magically. For Intellij IDE, we need extra steps to enable it. 1. Spring Boot Dev Tools With Spring Boot Dev Tools enabled : Any changes to views or resources can be seen in the […]
The Infinitest is a continuous testing plugin, it helps to run the test automatically. 1. Install on IntelliJ 1.1 In Plugins, clicks on the “Browse repositories…” 1.2 Type “Infinitest” and clicks on the “Install” button. 1.3 Restart the Intellij IDEA. 2. Add Infinitest facet In the project structure / settings, add a “Infinitest” facet. 3. […]
By default, Intellij IDEA doesn’t compile classes automatically. But, you can enable the auto compile feature by following steps : In “Project settings or preferences” Select “Build, Execution, Deployment -> Compiler” Checked Make project automatically P.S This feature is available since IDEA 12 References Brand New Compiler Mode in IntelliJ IDEA 12
In this tutorial, we will show you how to ‘hot deploy’ or ‘hot swap’ a web application in IDEA. Note Tested with Intellij IDEA 14 and 15 1. Select exploded WAR Go Run –>> Edit Configurations –>> “Deployment” tab, clicks + icon –>> select an “exploded artifact” 2. Update classes and resources Select “Server” tab, […]
This article shows you a few ways to generate the serialVersionUID for serialization class. 1. serialver JDK has a built-in command serialver to generate a serialVersionUID automatically. In this example, we use serialver to generate a serialVersionUID for an Address class. Terminal $ serialver Address Address: static final long serialVersionUID = -687991492884005033L; 2. Eclispe IDE […]
