A class file consists of a stream of 8-bit bytes. Files containing the .class file extension are compiled bytecode class applications. These files are compiled Java source code files. The Java source code files are compiled to create the resulting CLASS file. At that point, the Java Virtual Machine executes the application. At that point, the Java Virtual Machine executes the application.
File with CLASS extension contains compiled source code written in Java. CLASS file is generated by compiler from JAVA file containing classes. Single CLASS file contains bytecode, a binary code executable by Java Virtual Machine (JVM).
CLASS files contain bytecode, binary program code executable by a Java Virtual Machine (JVM). CLASS files are compiled from JAVA files using the javac command with a JVM installation. Before executing a Java application, it must first be compiled.
CLASS file extension denotes a compiled Java source code file. Java files are stored with JAVA extension before compilation. To run Java programs, the source code must be compiled to create a CLASS file, loadable into a Java Virtual Machine to execute the application.
A CLASS file contains bytecode compiled from Java language source code. CLASS files are primarily associated with Java Development Kit. All about CLASS Files. CLASS files can be viewed using compatible IDEs or source code editors. IDEs can build JAR packages including *.classes and other content.
Oracle JVM
OpenJDK
Eclipse IDE