Add a varargs list of items to the specified list. - Java java.util

Description

Add a varargs list of items to the specified list.

Demo Code

//package com.java2s;

import java.util.ArrayList;

import java.util.List;

public class Main {

    public static final <T, U extends T> List<T> addToList(List<T> list,
            U... items) {//  w  ww  . j  ava  2 s  .  co m
        if (list != null && items != null) {
            for (int i = 0; i < items.length; i++) {
                list.add(items[i]);
            }
            if (list instanceof ArrayList) {
                ((ArrayList<T>) list).trimToSize();
            }
        }

        return list;
    }


    public static final <T, U extends T> List<T> addToList(List<T> list,
            List<U> items) {
        if (list != null && items != null) {
            list.addAll(items);
        }

        return list;
    }
}

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