Given a Java source code file ComputeTax.java , what is the command we use in command prompt, in order to compile this Java program?

After compilation, what is the command we use in command prompt, in order to run this Java program?

What is the input and output of a Java compiler?

What is the definition of JDK? And JRE ? And JVM?

Is bytecode the format for .java source code file, or for .class file? Hint: Java is cross-platform, or architecture-neutral, because bytecode is designed to be machine-independent, so that with the help of JVM, bytecode can run on different OS and CPU.

In a java source code file Welcome.java, we have the following code:

public class TryItOut{ public void Main(){

System.out.println("Try it out);

}

}

So what is wrong with the above code? Please modify it to make it compilable and runnable, and assume you cannot change the file name Welcome.java. Hint: the file name has to be the same as the public class name in a java source code.