What is Byte-Code?

Byte-codes are the basis of Java’s platform independence. You either compile or interpret a program in most programming languages. However a Java program is both compiled and interpreted. With the compiler, a program is translated into an intermediate language called Java byte-code, which is the platform-independent code interpreted by the interpreter on the Java platform.

The interpreter parses and runs each Java byte-code instruction on the computer. Compilation happens just once; interpretation occurs each time the program is executed. Essentially, Byte-codes are the machine language of the Java virtual machine. These byte-codes further get converted to the native machine code by the interpreter engine.

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