ex_generic9.java

来自「JAVA_5 JAVA_5 JAVA_5 JAVA_5 JAVA_5 JAVA_」· Java 代码 · 共 33 行

package ch7;
import java.util.*;
public class Ex_Generic9 {
    public static void main(String[] args) {
        Vector<Integer> v1 = new Vector<Integer>();
        v1.add(100);
        v1.add(200);
        v1.add(300);
        Vector<Float> v2 = new Vector<Float>();
        v2.add(1.1f);
        v2.add(2.2f);
        v2.add(3.3f);
        printMyVector(v1);
        printMyVector(v2);
        /*
        Vector v4 = new Vector();
        v4.add(new Integer(10));
        v4.add(new Integer(20));
        v4.add("Java");
        printMyVector(v4);

        */

    }
    static void printMyVector(Vector<? extends Number> v) {
        Iterator<? extends Number> it = v.iterator();
        while(it.hasNext()) {
            Number data = it.next();
            System.out.print(data + ", ");
        }
        System.out.println();
    }
}