What is Non Static Variables?

 What is Non Static Variables?

• ·       Non – static variables are object members.
• ·       Non – static variables are created inside class outside method without using static keyword.
• ·       These variables are also called as instance variable.
• ·       Only after creating object, we can access non-static variable.
• ·       It is not mandatory to initialize . If we donot initialize , depending upon data type default value will store into it.

public class B{
    
    int x=10;
    public static void main(String [] args){
        
        System.out.println(x);
    }
}

Correct Program

public class B{
    
    int x=10;
    
    public static void main(String []args){
        
        B b1 = new B();
        System.out.println(b1.x);
    }
}

Non static main original value will not change only xerox copy will change as shown in below example

public class A{
    
    int x=10;
    
    public static void main(String [] args){
        
        A a1= new A();
        a1.x=1000;
        
        System.out.println(a1.x);
        
        A a2 = new A();
        
        System.out.println(a2.x);
    }
}