Java Map Remove remove(Map map, String key)

Description

remove

License

Apache License

Declaration

public static synchronized boolean remove(Map<?, ?> map, String key) 

Method Source Code

//package com.java2s;
/*/*  w w  w. j  av a  2 s  .  com*/
   Copyright 2011 Udayakumar Dhansingh (Udy)
    
   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at
    
   http://www.apache.org/licenses/LICENSE-2.0
    
   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
       
 */

import java.util.Iterator;
import java.util.Map;

public class Main {
    public static synchronized boolean remove(Map<?, ?> map, String key) {
        Iterator<?> it = map.keySet().iterator();

        while (it.hasNext()) {
            Object keyObject = it.next();

            if (keyObject instanceof String) {
                String k = (String) keyObject;

                // Remove the first found and return
                if (k.compareTo(key) == 0) {
                    it.remove();
                    return true;
                }
            }
        }

        return false;
    }
}

Related

1. remove(Map> map, K key, V value)
2. remove(Map map, Collection keys)
3. remove(Map map, K key)
4. removeAll(final Map target, final Iterable keys, Collection values)