intellij-idea

What does it mean if a variable has the name “this$0” in IntelliJ IDEA while debugging Java?

this$0 is “hidden field” in Inner class (the non-static nested class) which is used to hold reference to instance of Outer class which was used to create current instance of Inner class. In short when you have Outer outer = new Outer(); Outer.Inner inner = outer.new Outer.Inner(); Inner instance held by inner will store in … Read more

ClassNotFoundException with com.mysql.cj.jdbc.Driver, MySQL Connector and IntelliJ IDEA [duplicate]

Try upgrading your driver. Coz Mysql community has updated class name from com.mysql.jdbc.Driver to com.mysql.cj.jdbc.Driver Check out more on MySql Community <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.11</version> Or Download jar file direct from here : mysql-connector-java-8.0.11.jar List of MySql jar file

IntelliJ IDEA: Run java with args from external file

UPDATE: This feature is now available for some Run/Debug configurations. At the moment supported types for Java-based run configurations are: Application, Java Scratch, JUnit, JarApplication. Use the Redirect input from option: Original answer from 2017 with the workaround: IntelliJ IDEA doesn’t support it at the moment: IDEA-88717 No way to configure STDIN reading from a … Read more

How do I add a library project to the Android Studio and use it?(Some asked dont’t take effect)

I’ll show you how to do so with the map sample. Say you have imported the map sample in Android Studio, and created the corresponding maps module. 1. Create an android library module You need to create an additional library module for GMS, which includes all the classes the map sample needs from Google API … Read more