Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.util.Collection;

import java.util.List;

import java.util.Map;

public class Main {
    public static long[] toLongArray(List<Long> list, long defaultValue) {
        if (isEmpty(list)) {
            return new long[0];
        }
        long[] array = new long[list.size()];
        for (int I = 0; I < list.size(); I++) {
            Long v = list.get(I);
            if (v == null) {
                array[I] = defaultValue;
            } else {
                array[I] = v.longValue();
            }
        }
        return array;
    }

    public static boolean isEmpty(Collection<?> c) {
        return c == null || c.isEmpty();
    }

    public static boolean isEmpty(Map<?, ?> map) {
        return map == null || map.isEmpty();
    }

    @SafeVarargs
    public static <T> boolean isEmpty(T... array) {
        return array == null || array.length == 0;
    }
}