2. Static Methods:
                              Static Methods belongs to the Class rather than the object.Static methods can be invoked without the need of objects.Statics variables can be modified by static methods.
Example:
public class HelloWorld{ static double pi = 3.14;
     static void calc(double a) {
  pi = a;
  System.out.println("Value pi is: "+a);
 }
 public static void main(String[] args) {
  HelloWorld.calc(55.3);//accessing the static method
 }
}
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