Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import java.util.Collection;

import java.util.Map;

public class Main {
    static <K, V> int getCollectionSize(final Map<K, ? extends Collection<V>> map, final K key) {
        final Collection<V> values = map.get(key);
        if (values == null) {
            return 0;
        } else {
            return values.size();
        }
    }

    static <T> T get(final Collection<T> collection, final int index) {
        if (collection != null) {
            int i = 0;
            for (final T object : collection) {
                if (i == index) {
                    return object;
                } else {
                    i++;
                }
            }
        }
        return null;
    }
}