arraylistadddemo2.java

JAVA编程思想源代码 值得一下 很难找的

package chapter9;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;

public class ArrayListAddDemo2 {

	
	public static void main(String[] args) {
		Collection<String> col = new ArrayList<String>();
		for (int i = 0; i < 5; i++) {
			col.add(String.valueOf(i));
		}

	col.addAll(col);

		for (Iterator<String> iter = col.iterator(); iter.hasNext();)
			System.out.println("the element  is :" + iter.next());
	}

}