java.util.ConcurrentModificationException的解决方案

1.使用iterator

    public static void main(String[] args) {
        List<String> list=new ArrayList<String>();
        list.add("han");
        list.add("ji");
        list.add("bao");
        for(String s:list)
        {
            System.out.println(s);
        }
        System.out.println("................");
        Iterator<String> it = list.iterator();
        while(it.hasNext())
        {
            String n = it.next();
            if(n.equals("ji"))
            it.remove();
        }
        for(String s:list)
        {
            System.out.println(s);
        }
        System.out.println("................");
    }

2.使用removeAll

    public static void main(String[] args) {
        List<String> list=new ArrayList<String>();
        list.add("han");
        list.add("ji");
        list.add("bao");
        for(String s:list)
        {
            System.out.println(s);
        }
        System.out.println("................");
        List<String> list1=new ArrayList<String>();
        for(String s:list)
        {
            if(s.equals("ji"))
              list1.add(s);
        }
        for(String s:list1)
        {
            System.out.println(s);
        }
        System.out.println("................");
        list.removeAll(list1);
        for(String s:list)
        {
            System.out.println(s);
        }        
        
    }