ListUtil.java

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package com.wcs.tool;

/*
 * #%L
 * Webstar Newsletter
 * %%
 * Copyright (C) 2013 Webstar Csoport Kft.
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, either version 3 of the 
 * License, or (at your option) any later version.
 * 
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public 
 * License along with this program.  If not, see
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import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

/**
 *
 * @author alex
 */
public class ListUtil {
    
    public static boolean isEmpty(Collection collection) {
        if (collection == null || collection.isEmpty()) {
            return true;
        }
        return false;
    }
    
    public static boolean isNotEmpty(Collection collection) {
        return !isEmpty(collection);
    }
    
    public static <T> List<List<T>> chopped(List<T> list, final int L) {
        List<List<T>> parts = new ArrayList<List<T>>();
        final int N = list.size();
        for (int i = 0; i < N; i += L) {
            parts.add(new ArrayList<T>(
                list.subList(i, Math.min(N, i + L)))
            );
        }
        return parts;
    }
    
    public static <T> T getLast(List<T> list) {
        return list.get(list.size() - 1);
    }
    
    public static <T> T removeLast(List<T> list) {
        return list.remove(list.size() - 1);
    }
}