Java String Starts Wtih startsWith(CharSequence input, String prefix)

Description

starts With

License

Apache License

Declaration

public static boolean startsWith(CharSequence input, String prefix) 

Method Source Code

//package com.java2s;
/*/*from   w w w . j  ava 2  s  .  co  m*/
 * Copyright 2007-2010 the original author or authors.
 *
 * 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 {
    public static boolean startsWith(CharSequence input, String prefix) {
        if (input.length() < prefix.length()) {
            return false;
        }
        if (input.getClass() == String.class) {
            return ((String) input).startsWith(prefix);
        }
        int len = prefix.length();
        for (int i = 0; i < len; i++) {
            char pi = input.charAt(i);
            char ci = prefix.charAt(i);
            if (pi != ci) {
                return false;
            }
        }
        return true;
    }
}

Related

1. startsWith(CharSequence cs, CharSequence prefix, boolean caseSensitive)
2. startsWith(CharSequence s, CharSequence seq)
3. startsWith(CharSequence seq, char... any)
4. startsWith(CharSequence seq, String str)
5. startsWith(CharSequence source, CharSequence search)