Map、List元素的删除

对于Map集合的元素，由于集合是无序的，直接遍历删除会出现问题，怎么办呢？直接上实例代码

public static void testMapDelete(){    //初始化集合    Map<String,String > map = new HashMap<String, String>();    map.put("1", "v1");    map.put("2", "v2");    map.put("3", "v3");    map.put("4", "v4");    map.put("5", "v5");    map.put("6", "v6");    map.put("7", "v7");    //删除操作    Iterator<Entry<String, String>> it = map.entrySet().iterator();    while (it.hasNext()) {          Map.Entry<String, String> entry =  it.next();          String key = entry.getKey();          String value = entry.getValue();          System.out.println("key = " + key + "; value = " + value);          if(value.equalsIgnoreCase("v3")){            it.remove();        }    }     //查看删除后的数据    Iterator<Entry<String, String>> its = map.entrySet().iterator();    while (its.hasNext()) {          Map.Entry<String, String> entry =  its.next();          String key = entry.getKey();          String value = entry.getValue();          System.out.println("key1 = " + key + "; value1 = " + value);      } }

Iterator sListIterator = list.iterator();
while(sListIterator.hasNext()){
String e = sListIterator.next();
if(e.equals(“3”)){
sListIterator.remove();
}
}