Final variable

    
      public class FinalVariableExample {
    
            public static void main(String[] args) {
                  
                                     final int hoursInDay=24;
                                
                    System.out.println("Hours in 25 days = " + hoursInDay * 25);
                  
            }
    }
    
   
    Output
    Hours in 25 days = 600
   

Do While loop

    public class DoWhileExample {
   
      public static void main(String[] args) {
     
             int i =0;
     
        do
        {
          System.out.println("i is : " + i);
          i++;
       
        }while(i < =5);
     
      }
    }
   
 OUTPUT-
i is 0
i is 1
i is 2
i is 3
i is 4
i is 5