How to call non static method from static method java

• Class is a template and when we create object instance variables gets memory.
• If we create two objects variables get memory in two objects. So instance variables gets memory whenever object is created.
• When we create variables as static , memory will not be created in objects because static means class level and it belongs to class not object but we can access static variables and static methods from objects.
• Calling static method from non static method in java 
• In our scenario calling a non static method from static method in java.
• If we are calling a non static method then we need to use object so that it will call corresponding object non static method.
• Non static methods will be executed or called by using object so whenever we want to call a non static method from static method we need to create an instance and call that method.
• If we are calling non static method directly from a static method without creating object then compiler throws an error. 

Program #1: Java example program to call non static method from static method. 

• In the above program we are trying to call non static method of class from a static method so compiler throwing error.
• Can not make a static reference to the non- static method nonStaticMethod() from the type StaticMethodDemo
• So without object we can not cal non static method of a class.
• Check the below example program calling non static method from static method by creating object of that class and on that object calling non static method.

Program #2: Java example program to call non static method from static method.

1. package com.instanceofjava.staticinterviewquestions;
2. //www.instanceofjava.com
3.  
4. public class StaticMethodDemo {
5.  
6.     
7.     void nonStaticMethod(){
8.         System.out.println("non static method");
9.     }
10.     
11.     public static void staticMethod(){
12.         
13.         new StaticMethodDemo().nonStaticMethod();
14.     }
15.     
16.     
17.     
18.     public static void main(String[] args) {
19.         
20.         StaticMethodDemo.staticMethod();
21. }
22.  
23. }

   
Output:

1. non static method