listtest.java

加密解密技巧

package com.collection;

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

public class ListTest {
	public static void main(String[] args) {
		int i = 1;
		double d = 10;
		char c = 'a';
		boolean b = false;
		
		String str = "abc";
		
		Student student = new Student();
		//1 创建列表对象
		ArrayList list = new ArrayList();
		//2 添加元素
		list.add(i);
		list.add(d);
		list.add(c);
		list.add(b);
		list.add(str);
		list.add(student);
		//3 输出
		Iterator iterator = list.iterator();
		while(iterator.hasNext()){
			System.out.println(iterator.next());
		}
		System.out.println("**********");
		for (int j = 0; j < list.size(); j++) {
			System.out.println(list.get(j));
		}
		

	}

}