write static method in java code example

Example 1: static in java

//Java Program to get the cube of a given number using the static method  
using static before a method or variable we can access it by not creating a 
instance of it.in the program we directly used student.cube(5)
class Calculate{  
  static int cube(int x){  
  return x*x*x;  
  }  
  
  public static void main(String args[]){  
  int result=Calculate.cube(5);  
  System.out.println(result);  
  }  
}

Example 2: static data and static methods in java

class JavaExample{
   private static String str = "BeginnersBook";

   //Static class
   static class MyNestedClass{
	//non-static method
	public void disp() {

	   /* If you make the str variable of outer class
	    * non-static then you will get compilation error
	    * because: a nested static class cannot access non-
	    * static members of the outer class.
	    */
	   System.out.println(str); 
	}

   }
   public static void main(String args[])
   {
       /* To create instance of nested class we didn't need the outer
	* class instance but for a regular nested class you would need 
	* to create an instance of outer class first
        */
	JavaExample.MyNestedClass obj = new JavaExample.MyNestedClass();
	obj.disp();
   }
}