public static void main(String[] args) { 
    List<String> t=new ArrayList<String>(); 
    for (int i = 0; i < 10; i++) { 
      t.add(""+i+""); 
    } 
    System.out.println("原有的List："+t.toString()); 
    for (int i = 0; i < t.size(); i++) { 
      t.remove(i); 
    } 
    System.out.println("循环删除后的List:"+t.toString()); 
  } 

原有的List：[0, 1, 2, 3, 4, 5, 6, 7, 8, 9] 
循环删除后的List:[1, 3, 5, 7, 9] 

public static void main(String[] args) { 
    List<String> t=new ArrayList<String>(); 
    for (int i = 0; i < 10; i++) { 
      t.add(""+i+""); 
    } 
    System.out.println("原有的List："+t.toString()); 
      
    List<String> tt=new ArrayList<String>(); 
    for (int i = 0; i < t.size(); i++) { 
      tt.add(t.get(i)); 
    } 
    t.removeAll(tt); 
    System.out.println("循环删除后的List:"+t.toString()); 
  } 

原有的List：[0, 1, 2, 3, 4, 5, 6, 7, 8, 9] 
循环删除后的List:[]