JAVA包装类及自动封包解包示例代码

 1 public class Wrapper {
 2     public static void main(String[] args) {
 3         int i = 500;
 4         Integer t = new Integer(i);
 5         int j = t.intValue();
 6         String s = t.toString();
 7         System.out.println(t);
 8         Integer t1 = new Integer(500);
 9         System.out.println(t.equals(t1));
10         Integer a1 = 5;
11         int a2 = new Integer(5);
12         System.out.println("a1 = " + a1 + ",a2 = " + a2);
13     }
14 }