Main.java Source code

Introduction

Here is the source code for Main.java

Source

/*
 * JBoss DNA (http://www.jboss.org/dna)
 * See the COPYRIGHT.txt file distributed with this work for information
 * regarding copyright ownership.  Some portions may be licensed
 * to Red Hat, Inc. under one or more contributor license agreements.
 * See the AUTHORS.txt file in the distribution for a full listing of 
 * individual contributors. 
 *
 * JBoss DNA is free software. Unless otherwise indicated, all code in JBoss DNA
 * is licensed to you 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.
 *
 * JBoss DNA 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.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Reader;
import java.io.Writer;
import java.util.Arrays;

/**
 * @author Randall Hauch
 */
public class Main {
    /**
     * Compare two input stream
     * 
     * @param input1 the first stream
     * @param input2 the second stream
     * @return true if the streams contain the same content, or false otherwise
     * @throws IOException
     * @throws IllegalArgumentException if the stream is null
     */
    public static boolean isSame(InputStream input1, InputStream input2) throws IOException {
        boolean error = false;
        try {
            byte[] buffer1 = new byte[1024];
            byte[] buffer2 = new byte[1024];
            try {
                int numRead1 = 0;
                int numRead2 = 0;
                while (true) {
                    numRead1 = input1.read(buffer1);
                    numRead2 = input2.read(buffer2);
                    if (numRead1 > -1) {
                        if (numRead2 != numRead1)
                            return false;
                        // Otherwise same number of bytes read
                        if (!Arrays.equals(buffer1, buffer2))
                            return false;
                        // Otherwise same bytes read, so continue ...
                    } else {
                        // Nothing more in stream 1 ...
                        return numRead2 < 0;
                    }
                }
            } finally {
                input1.close();
            }
        } catch (IOException e) {
            error = true; // this error should be thrown, even if there is an error closing stream 2
            throw e;
        } catch (RuntimeException e) {
            error = true; // this error should be thrown, even if there is an error closing stream 2
            throw e;
        } finally {
            try {
                input2.close();
            } catch (IOException e) {
                if (!error)
                    throw e;
            }
        }
    }
}