Check if a text is present at the current position in a buffer(char array and char array) : Array Compare « Collections Data Structure « Java

1. Java
2. Collections Data Structure
3. Array Compare

Check if a text is present at the current position in a buffer(char array and char array)

import java.io.File; import java.io.FileFilter; import java.io.UnsupportedEncodingException; import java.util.ArrayList; import java.util.List; import java.util.regex.Pattern; import java.util.regex.PatternSyntaxException; /* * 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. * *//** * Various string manipulation methods that are more efficient then chaining * string operations: all is done in the same buffer without creating a bunch of * string objects. * * @author <a href="mailto:dev@labs.apache.org">Dungeon Project</a> */publicclass Main { /** * Check if a text is present at the current position in a buffer. * * @param charArray * The buffer which contains the data * @param index * Current position in the buffer * @param text * The text we want to check * @return <code>true</code> if the buffer contains the text. */publicstaticfinalint areEquals( char[] charArray, int index, String text ) { if ( ( charArray == null ) || ( charArray.length == 0 ) || ( charArray.length <= index ) || ( index < 0 ) || ( text == null ) ) { return -1; } else { char[] data = text.toCharArray(); return areEquals( charArray, index, data ); } } /** * Check if a text is present at the current position in a buffer. * * @param charArray * The buffer which contains the data * @param index * Current position in the buffer * @param charArray2 * The text we want to check * @return <code>true</code> if the buffer contains the text. */publicstaticfinalint areEquals( char[] charArray, int index, char[] charArray2 ) { if ( ( charArray == null ) || ( charArray.length == 0 ) || ( charArray.length <= index ) || ( index < 0 ) || ( charArray2 == null ) || ( charArray2.length == 0 ) || ( charArray2.length > ( charArray.length + index ) ) ) { return -1; } else { for ( int i = 0; i < charArray2.length; i++ ) { if ( charArray[index++] != charArray2[i] ) { return -1; } } return index; } } } 

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