The cross-platform of Java

Since the code compiled by the Java program is not code that can be run directly by the hardware system, it is an "intermediate code"-bytecode. A different Java Virtual machine (JVM) is then installed on different hardware platforms, which are then "translated" by the JVM into code that the corresponding hardware platform can execute. So for Java programmers, there is no need to consider what the hardware platform is. So Java can be cross-platform.

If you are porting to UNIX with Windows, simply translate the Java file into a class file that is the UNIX JVM creates Macintosh and then run it with the JVM.

The cross-platform of Java