How to use the java codes into machines so that it works according to the coding?

Answer 1

java codes [source code] when compiled changes to byte code & runs on virtual machine [JVM's][interpreter]
//so U need different virtual machine[interpreter] for different platforms to use that byte code

Answer 2

There must be a Java Runtime Environment (jre) for your 'machine'. If that exists the Java code can be executed by the runtime environment.