public class Test
{
//思路:取一個4-7爲0的數和120&(與)
//4-7位爲0的數得到的方法:先取一個0-3位爲1的數(在本例中是15),然後向左移4位,取反!
public static void main(String[] argv){
int a=15;
int b=a<<4;
int e=~b;
int c=120;
int d=120&e;
System.out.println("b = "+b);
System.out.println("e = "+e);
System.out.println("d = "+d);
}
};