The performance between the 'normal' operation and the 'shift' operation.

First, I gonna post my test result with some code:

 //test the peformance of the <normal operation> and the <shift operation>.
 class ShiftOperation
 {
     public static void main(String[] args)
     {
         long startTime1 = System.nanoTime();
         for(long i = 0; i < 10000000000L; i++){
             int temp = 128 * 128;
         }
         long endTime1 = System.nanoTime();
         System.out.println("elapse = " + (endTime1 - startTime1) + " ns");
         //outputs:elapse = 13265249285 ns

         long startTime2 = System.nanoTime();
         for(long i = 0; i < 10000000000L; i++){
             int temp = 128 << 8;
         }
         long endTime2 = System.nanoTime();
         System.out.println("elapse = " + (endTime2 - startTime2) + " ns");
         //outputs:elapse = 12723663971 ns
     }
 }

The below screen shot shows the simple steps of the operations between the two.