/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements.  See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License.  You may obtain a copy of the License at *  *      http://www.apache.org/licenses/LICENSE-2.0 *  * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */package org.apache.log4j.util;import java.io.BufferedReader;import java.io.FileNotFoundException;import java.io.FileReader;import java.io.IOException;public class Compare {  static final int B1_NULL = -1;  static final int B2_NULL = -2;    static   public  boolean compare(String file1, String file2) throws FileNotFoundException,                                                             IOException {    BufferedReader in1 = new BufferedReader(new FileReader(file1));    BufferedReader in2 = new BufferedReader(new FileReader(file2));        String s1;    int lineCounter = 0;    while((s1 = in1.readLine()) != null) {      lineCounter++;      String s2 = in2.readLine();      if(!s1.equals(s2)) {	System.out.println("Files ["+file1+"] and ["+file2+"] differ on line " 			   +lineCounter);	System.out.println("One reads:  ["+s1+"].");	System.out.println("Other reads:["+s2+"].");	return false;      }    }        // the second file is longer    if(in2.read() != -1) {      System.out.println("File ["+file2+"] longer than file ["+file1+"].");      return false;    }        return true;  }  }