testvector.java

来自「java课件及例程有一些PPT及一些例程」· Java 代码 · 共 19 行

import java.util.Vector;
public class TestVector{
    public static void main(String args[]){
        Vector v1 = new Vector();
        Vector v2 = new Vector(20);
        Vector v3 = new Vector(20,5);
        System.out.println("v1.capacity()="+v1.capacity()+", v1.size()="+v1.size());
        System.out.println("v2.capacity()="+v2.capacity()+", v2.size()="+v2.size());
        System.out.println("v3.capacity()="+v3.capacity()+", v3.size()="+v3.size());
        v1.setSize(3);
        v1.trimToSize();
        System.out.println("v1.capacity()="+v1.capacity()+", v1.size()="+v1.size());
        v1.add(new Integer(5));	
        System.out.println("v1.capacity()="+v1.capacity()+", v1.size()="+v1.size());
         v1.addElement(new Integer(5));	
        System.out.println("v1.capacity()="+v1.capacity()+", v1.size()="+v1.size());

    }
}