Here you can find the source of removeKeysWithPrefix(Map
public static void removeKeysWithPrefix(Map<String, Object> map, String prefix)
//package com.java2s; /*/* www . ja v a2 s .c o m*/ * Copyright 2012-2015 Red Hat Inc. * * 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.*; public class Main { public static void removeKeysWithPrefix(Map<String, Object> map, String prefix) { Iterator<Map.Entry<String, Object>> iter = map.entrySet().iterator(); while (iter.hasNext()) { Map.Entry<String, Object> e = iter.next(); if (e.getKey().startsWith(prefix)) { iter.remove(); } } } }