Java String Starts Wtih startsWithConcatenation(String string, String... prefixes)

Description

Equivalent to string.startsWith(prefixes[0] + prefixes[1] + ...) but avoids creating an object for concatenation.

License

Apache License

Declaration

public static boolean startsWithConcatenation(String string, String... prefixes) 

Method Source Code

//package com.java2s;
/*/*from  w  w  w. j  av a 2  s.c  om*/
 * Copyright 2000-2014 JetBrains s.r.o.
 *
 * Licensed 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.
 */

public class Main {
    /**
     * Equivalent to string.startsWith(prefixes[0] + prefixes[1] + ...) but avoids creating an object for concatenation.
     */
    public static boolean startsWithConcatenation(String string, String... prefixes) {
        int offset = 0;
        for (String prefix : prefixes) {
            int prefixLen = prefix.length();
            if (!string.regionMatches(offset, prefix, 0, prefixLen)) {
                return false;
            }
            offset += prefixLen;
        }
        return true;
    }
}

Related

1. startsWithChar(String string, char prefix)
2. startsWithChar(String string, int character)
3. startsWithCharacter(String str, char stringStart)
4. startsWithCharacter(String str, String matchChars)
5. startsWithCommonPackagePrefix(String inputText)
6. startsWithConcatenationOf(String testee, String firstPrefix, String secondPrefix)
7. startsWithCS(String a, String b)
8. startsWithDigitsFollowedByLetters(String str)
9. startsWithHtml(Object object)