Go to “Run” > “Run As” > “Java Application,” and Eclipse will compile the code and run the application. You should see the GUI that you designed in Step 2, and it should be fully functional.

How to install Eclipse on Windows. To use Eclipse for Java programming, you need to first install Java Development Kit (JDK). Read "How to Install JDK for Windows".

The JDK is the development platform for building Java applications. Learn about different JDK versions, then install a JDK in your development environment and use it to compile a Java program.

Java compiler and bytecode. After compiling the source code (a .java file), the compiler generates intermediate object code called bytecode which is a .class file. Bytecode is not the same as machine ...