Main.java Source code

Java tutorial

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright 2010 Workplace Systems PLC (http://www.workplacesystems.com/).
 *
 * 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 {
    /** Take key and value pairs from source and create map from value to key in target. */
    public static <K, V> void reverse(Map<K, V> source, Map<V, K> target) {
        Iterator<K> i = source.keySet().iterator();
        while (i.hasNext()) {
            K key = i.next();
            V value = source.get(key);
            target.put(value, key);
        }
    }
}