Static Keyword

In Java, static keyword is mainly used for memory management. It can be used with variables, methods, blocks and nested classes. It is a keyword which is used to share the same variable or method of a given class. Basically, static is used for a constant variable or a method that is same for every instance of a class.

Let's See How to  Use Static Keyword. 

 import java.util.*;                                    //predefine class

class Account
  {
    public double principle;
    public double balance,totalBalance;
    public static float sIntrest=5.5f;                      //declartionm variable in float and Static and we can use and initialize of static variable anywhere in file by variable location
    public void simpleIntrest(double p,int t)
    {
        totalBalance=(p*sIntrest*t)/100;
        System.out.println("intrest is :  " +totalBalance);
    }
}
public class StaticUse
{
    public static void main(String [] args)
    {
        Account a1=new Account();         //with static variable we can save memory
        Account a2=new Account();         //coz if we r create many time object of a class but static variable take memory one time when we create it.
       // Account.cIntrest=5.5f;                                //u can initialize like this
        System.out.println("Enter amount of principle : ");
        Scanner sc = new Scanner(System.in);                //Read value By User
        double principle=sc.nextInt();
        a1.simpleIntrest(principle,10);
        a2.simpleIntrest(200,5);
    }
}