Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2014 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * 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.Collections;

import java.util.Map;
import java.util.TreeMap;

public class Main {
    static <K, V> Map<K, V> getMap(Map<K, V> orig) {
        if (orig == null || orig.size() == 0) {
            return Collections.emptyMap();
        } else if (orig.size() == 1) {
            final Map.Entry<K, V> entry = orig.entrySet().iterator().next();
            return Collections.singletonMap(entry.getKey(), entry.getValue());
        } else {
            return Collections.unmodifiableMap(new TreeMap<>(orig));
        }
    }
}