How to call Private Methods Publicly in Java using Reflection API?

There is a common question people ask, can we invoke private methods of a class publicly? YES we can call private methods of a class in another class by using Reflection API. java.lang.reflect package use in reflection API.

There, i am going to write the code in two ways :
1. By using Object's class getClass() method.

package reflection;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

class A {
    private void test() {
        System.out.println("from test");
    }

    private static void testStatic() {
        System.out.println("from static test");
    }
}

public class MainAccess {
    public static void main(String args[]) {
        A obj = new A();
        Class c = obj.getClass(); //getClass() method is from Object class
        try {
            Method m = c.getDeclaredMethod("test"); // from reflection 
            m.setAccessible(true);
            Object o = m.invoke(obj, new Object[]{}); // from reflection 
            Method mStatic = c.getDeclaredMethod("testStatic");
            mStatic.setAccessible(true);
            Object oStatic = mStatic.invoke(A.class, new Object[]{});
        } catch (NoSuchMethodException ex) {
            ex.printStackTrace();
        } catch (IllegalAccessException ex) {
            ex.printStackTrace();
        } catch (InvocationTargetException ex) {
            ex.printStackTrace();
        }
    }
}

2. By using Class.forName() method.

 package reflection;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;

public class Main {

    private void test() {
        System.out.println("from test");
    }

    public static void main(String[] args) {
        // TODO code application logic here
        try {
            Class c = Class.forName("reflection.Main");
            Method m = c.getDeclaredMethod("test");
            Object o = c.newInstance();
            m.invoke(o);

        } catch (NoSuchMethodException ex) {
            ex.printStackTrace();
        } catch (IllegalAccessException ex) {
            ex.printStackTrace();
        } catch (ClassNotFoundException ex) {
            ex.printStackTrace();
        } catch (InstantiationException ex) {
            ex.printStackTrace();
        } catch (InvocationTargetException ex) {
            ex.printStackTrace();
        }
    }
}

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