vectortest2.java

编程之道--java程序设计入门源代码

/**
 * 通过这个程序，测试Vector的ratainAll方法
 */
 
import java.util.Vector;

public class VectorTest2
{
	public static void main(String[] args)
	{
		VectorTest2 test = new VectorTest2();
		Vector vec1 = new Vector();
		Vector vec2 = new Vector();
		
		Student tom = new Student("Tom","20020410");
		Student jack = new Student("Jack","20020411");
		Student smith = new Student("Smith","20020412");
		Student rose = new Student("Rose","20020413");
		
		vec1.add(tom);
		vec1.add(jack);
		vec1.add(smith);
		vec1.add(rose);
		System.out.println("第一个Vector中的元素分别是：");
		test.display(vec1);
		
		vec2.add(rose);
		vec2.add(tom);
		System.out.println("\n第二个Vector中的元素分别是：");
		test.display(vec2);
		
		System.out.println("\n调用retainAll方法后，第一个Vector中的元素分别是：");
		vec1.retainAll(vec2);
		test.display(vec1);
		
	}
	
	public void display(Vector vec)
	{
		for(int i = 0; i < vec.size(); i++)
		{
			System.out.println(vec.get(i));
		}
	}
}