Compares two Strings, returning true if they are equal ignoring the case. : String Compare « Data Type « Java

Compares two Strings, returning true if they are equal ignoring the case.


 * 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
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.

 * <p>Operations on {@link java.lang.String} that are
 * <code>null</code> safe.</p>

 * @see java.lang.String
 * @author <a href="">Apache Jakarta Turbine</a>
 * @author <a href="">Jon S. Stevens</a>
 * @author Daniel L. Rall
 * @author <a href="">Greg Coladonato</a>
 * @author <a href="">Ed Korthof</a>
 * @author <a href="">Rand McNeely</a>
 * @author Stephen Colebourne
 * @author <a href="">Fredrik Westermarck</a>
 * @author Holger Krauth
 * @author <a href="">Alexander Day Chaffee</a>
 * @author <a href="">Henning P. Schmiedehausen</a>
 * @author Arun Mammen Thomas
 * @author Gary Gregory
 * @author Phil Steitz
 * @author Al Chou
 * @author Michael Davey
 * @author Reuben Sivan
 * @author Chris Hyzer
 * @author Scott Johnson
 * @since 1.0
 * @version $Id: 635447 2008-03-10 06:27:09Z bayard $
public class Main {
   * <p>Compares two Strings, returning <code>true</code> if they are equal ignoring
   * the case.</p>
   * <p><code>null</code>s are handled without exceptions. Two <code>null</code>
   * references are considered equal. Comparison is case insensitive.</p>
   * <pre>
   * StringUtils.equalsIgnoreCase(null, null)   = true
   * StringUtils.equalsIgnoreCase(null, "abc")  = false
   * StringUtils.equalsIgnoreCase("abc", null)  = false
   * StringUtils.equalsIgnoreCase("abc", "abc") = true
   * StringUtils.equalsIgnoreCase("abc", "ABC") = true
   * </pre>
   * @see java.lang.String#equalsIgnoreCase(String)
   * @param str1  the first String, may be null
   * @param str2  the second String, may be null
   * @return <code>true</code> if the Strings are equal, case insensitive, or
   *  both <code>null</code>
  public static boolean equalsIgnoreCase(String str1, String str2) {
      return str1 == null ? str2 == null : str1.equalsIgnoreCase(str2);



Related examples in the same category

1.How to compare String instances
3.Check order of two strings
4.Check order of two strings ignoring case
5.Compare Strings
6.Comparing Strings
7.A string can be compared with a StringBuffer
8.Compares all Strings in an array and returns the index at which the Strings begin to differ.
9.Compares all Strings in an array and returns the initial sequence of characters that is common to all of them.
10.Compares two Strings, and returns the index at which the Strings begin to differ.
11.Compares two Strings, and returns the portion where they differ.
12.Compares two Strings, returning true if they are equal.
13.Compress 2 adjacent (single or double) quotes into a single (s or d) quote when found in the middle of a String.
14.Compute Levenshtein distance
15.Find the Levenshtein distance between two Strings.
16.Compare two String[] for differences, either may be null
17.count Occurrences
18.Returns the length of the longest shared prefix of the two input strings.
19.Compares two strings: recognizes and handles embedded numbers.
20.Returns the levenshtein distance of two strings