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public class Lesson1neeraj{
	//instance method
    private void sayHello(String name){
    	System.out.println("Hello "+name);
    }
	public static void main(String[] args){
		
 

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//Lesson1neeraj.java
public class Lesson1neeraj{
	//instance method
    private void sayHello(String name){
    	System.out.println("Hello "+name);
    }
	public static void main(String[] args){
		{1,2,3,4,5,6}
		String[] args = null 
 

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public class Lesson2{
	private static void push(int[] stack,int elem,int top){

        stack[top] = elem++; 
        //top = 0
        top++;
        //top = 1  top is just a local variable - 
        //changes made to it are not passed to main function
}

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mkdir trydiff
git init
vim -p readme
git status 
//predict the status
git diff
//predict the diff
//if diff is ok :
git add
git diff head

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test test test