自动打包解包问题
scott 2008-09-17 06:30:05 import java.util.*;
public class TestMap {
public static void main(String[] args) {
Map p1=new HashMap();
Map p2=new HashMap();
p1.put("one","1");
p1.put("two","2");
p1.put("three","3");
p2.put("A","1");
p2.put("B","2");
p2.put("C","3");
System.out.println(p1.size());
System.out.println(p1.containsKey("one"));
System.out.println(p1.containsValue(1));//这句语句执行为什么是false;
//为什么不执行if语句
if(p1.containsValue(2)) {
System.out.println("if语句执行");
int i=(Integer)p2.get("B");
System.out.println(i);
}
Map p3=new HashMap(p1);
p3.putAll(p2);
System.out.println(p3);
}
}