Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * JBoss, Home of Professional Open Source
 * Copyright 2005, JBoss Inc., and individual contributors as indicated
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

import java.util.ArrayList;
import java.util.Collection;

public class Main {
    /** Indicates whether collection elements should be actually checked. */
    private static final boolean DEBUG = false;

    /**
     * Ensures that all elements of the given collection can be cast to a desired type.
     * 
     * @param collection the collection to check
     * @param type the desired type
     * @return a collection of the desired type
     * @throws ClassCastException if an element cannot be cast to the desired type
     */
    @SuppressWarnings("unchecked")
    public static <E> Collection<E> checkCollection(Collection<?> collection, Class<E> type) {
        if (DEBUG) {
            Collection<E> copy = new ArrayList<E>(collection.size());
            for (Object element : collection) {
                copy.add(type.cast(element));
            }
            return copy;
        }
        return (Collection<E>) collection;
    }
}