package locks;



/**
 * Created by RXJ on 2018年3月7日.
 */
public class locksTest {

 public static final int w= 4;
 public static String test(){
 String s = "0";

 return s;
 }

 public static void main(String[] args){
 class Foo{
 public int i=0xFFFFFFF1;
 }
 Object o = new Foo();
 Foo foo = (Foo) o;
 System.out.println(foo.i);

 String a = "a";
 switch (a){
 case "b":
 System.out.println(a);
 break;
 case "a":
 System.out.println(a);
 break;
 default:
 System.out.println(a);
 }
 }

}