You have an interpretive compiler for Java, for machine M$,$ including the front$-$end cross compiler Java to ByteCode running on machine M $($this is 'javac' running on machine M$),$ and the back$-$end interpreter JVM running on M $($commonly named java virtual machine and invoked by 'java' command $)$

You write a Java program P$.$ Show all steps until you get execution on M$.$

You purchased a new machine N and you want your Java program P run on N$.$ Discuss and show what is needed with minimal efforts $($minimum purchasing and minimal developments$).$