Online Java

In Java, programs are not compiled into executable files; they are compiled into bytecode (as discussed earlier), which the JVM (Java Virtual Machine) then executes at runtime. Java source code is compiled into bytecode when we use the javac compiler. The bytecode gets saved on the disk with the file extension .

How to compile a java program

Compiling a Java program means taking the programmer-readable text in your program file (also called source code) and converting it to bytecodes , which are platform-independent instructions for the Java VM.