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.