JAVA包装类及自动封包解包实例代码

public class wrapper {
     public static void main(string[] args) {
         int i = 500;
         integer t = new integer(i);
         int j = t.intvalue();
         string s = t.tostring();
         system.out.println(t);
         integer t1 = new integer(500);
         system.out.println(t.equals(t1));
         integer a1 = 5;
         int a2 = new integer(5);
         system.out.println("a1 = " + a1 + ",a2 = " + a2);
     }
 }

结果：

d:\javacode>javac wrapper.java

d:\javacode>java wrapper

500

true

a1 = 5,a2 = 5