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Bytecode is computer object code that an interpreter converts into binary machine code so it can be read by a computer's hardware processor. The interpreter is typically implemented as a virtual machine (VM) that translates the bytecode for the target platform.

java files) are compiled to bytecode by Java Compiler. Bytecode is then stored in . class files. These files are then packed together using jar tool to create JAR (Java Archive) file.

Bytecode (also called portable code or p-code) is a form of instruction set designed for efficient execution by a software interpreter.

The distinction between source code and bytecode is that source code is a collection of computer instructions expressed in a human-readable programming language, whereas bytecode is an intermediate code that is processed by a virtual machine between source code and machine code.

Bytecode is the intermediate representation of a Java program, allowing a JVM to translate a program into machine-level assembly instructions. When a Java program is compiled, bytecode is generated in the form of a . class file. This . class file contains non-runnable instructions and relies on a JVM to be interpreted.

The bytecodes streams are stored in the method area of the JVM. The bytecodes for a method are executed when that method is invoked during the course of running the program. They can be executed by intepretation, just-in-time compiling, or any other technique that was chosen by the designer of a particular JVM.

Bytecode in Java is the reason java is platform-independent, as soon as a Java program is compiled bytecode is generated. To be more precise a Java bytecode is the machine code in the form of a . class file. A bytecode in Java is the instruction set for Java Virtual Machine and acts similar to an assembler.