Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//it under the terms of the GNU Affero General Public License as published by

import java.util.Collection;

import java.util.List;

public class Main {
    public static <T> T getLastOrNull(List<T> l) {
        final int size = l.size();
        if (size == 0)
            return null;
        return l.get(size - 1);
    }

    /**
     * @param coll
     * @postcondition (coll == null) --> (result == 0)
     * @postcondition (coll != null) --> (result == coll.size())
     */
    public static int size(Collection<?> coll) {
        return (coll == null) ? 0 : coll.size();
    }
}