class Noname1
{
public static void main(String[] args)
{
long x=System.currentTimeMillis();
for(long i=0;i<900000000;i++)
{
int a = 16/2;
}
long y=System.currentTimeMillis();
System.out.println("a打印的时间 :"+(y-x));
long m=System.currentTimeMillis();
for(long i=0;i<900000000;i++)
{
int b = 16>>1;
}
long n=System.currentTimeMillis();
System.out.println("b打印的时间 :"+(n-m));