collectiontest.java

Java程序设计大学教程程序源代码

/**
 * <p>Title: Collection演示程序</p>
 * <p>Copyright: Copyright (c) 2005</p>
 *
 * <p>Company: 刘艺</p>
 *
 * @author 刘艺
 * @version 1.0
 */

package jbookch5.container;

import java.util.*;

//CollectionTest类
public class CollectionTest {
    public CollectionTest() {
        Student ZhangSan=new Student("张三",90);
        c1.add(ZhangSan);
        c1.add("张三");
        c1.add("李四");
        c1.add(new Student("王武",85));
        c1.add(new Student("赵榴",76));
        c1.add(ZhangSan);
        printCollection(c1);
        c1.remove(ZhangSan);
        c1.remove("张三");
        printCollection(c1);
        c2.add(ZhangSan);
        c2.add("李四");
        printCollection(c2);
        c2.addAll(c1);
        printCollection(c2);
    }
    
    public static void main(String[] args){
        new CollectionTest();
    }
    
    private void printCollection(Collection c) {
        System.out.println("---------------------");
        Iterator it=c.iterator();
        while (it.hasNext()){
            System.out.println(it.next());
        }
        
    }
    
    //Collection支持多种容器类的实现
    Collection c1=new ArrayList();
    Collection c2=new HashSet();
    
}

//Student类
class Student {
    public Student(String n,int s) {
        name=n;
        score=s;
    }
    
    public String toString(){
        String s=name+"  成绩："+score;
        return s;
    }
    
    String name;
    int score;
}