Java - javap command

Java Tools & Commands Java 

This is java command line tool which comes with JDK.

It disassembles class files and prints a human-readable version of those classes.

Example:

A Java class

public class MyClass {
  private int i;

  public MyClass (int i) {
    this.i = i;
    }

  public int getI () {
    return i;
    }

  public static void main (String[] args) {
    MyClass m = new MyClass(5);
    System.out.println(m.getI());
  }
}

Let's compile above class and then run javap:

D:\examples>javac MyClass.java

D:\examples>javap MyClass
Compiled from "MyClass.java"
public class MyClass {
  public MyClass(int);
  public int getI();
  public static void main(java.lang.String[]);
}