public class ShiftOperator {
public static void main(String[] args) {
int number = 1;
System.out.println( "2的0次: " + number);
number = number << 1;
System.out.println("2的1次: " + number);
number = number << 1;
System.out.println("2的2次: " + number);
number = number << 1;
System.out.println("2的3次:" + number);
}
}