回复 2楼 付政委
											System.out.println("list1打印:");
        List<String> list1 = new ArrayList<String>();
        list1.add("哈哈");
        list1.add("嘿嘿");
        list1.add("嘻嘻");
        list1.add("丫丫");
        for (String string : list1) {
            System.out.println(string);
        }
        System.out.println("list2打印:");
        List<String> list2 = new ArrayList<String>();
        list2.add("哈哈");
        list2.add("嘿嘿");
        list2.add("嘻嘻");
        list2.addAll(list1);
        for (String string : list2) {
            System.out.println(string);
        }
        System.out.println("去掉重复后的打印:");
        Set<String> set = new HashSet<String>();
        for (String string2 : list2) {
            set.add(string2);
        }
        for (String character : set) {
            System.out.println(character);
        }
                                                                                                           东软帝国群
 东软帝国群
[
 本帖最后由 yangbobo1992 于 2011-9-29 21:54 编辑 ]