Does the StringBuilder start with prefix? - Java java.lang

Java examples for java.lang:StringBuilder

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Description

Does the StringBuilder start with prefix?

Demo Code

/*  Copyright 2011 Alexander Bunkenburg alex@inspiracio.com

    This file is part of atom.jar.// w ww.  j  a  va2s.c  o m

    atom.jar is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    atom.jar is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with atom.jar.  If not, see <http://www.gnu.org/licenses/>.
 */
//package com.java2s;

public class Main {
    public static void main(String[] argv) throws Exception {
        StringBuilder builder = new StringBuilder();
        String prefix = "java2s.com";
        System.out.println(startsWith(builder, prefix));
    }

    /** Does the builder start with prefix? 
     * @param builder
     * @param prefix 
     * @return boolean */
    public static boolean startsWith(StringBuilder builder, String prefix) {
        boolean startsWith = builder.indexOf(prefix) == 0;
        return startsWith;
    }

    /** Does the builder start with prefix? 
     * @param builder
     * @param prefix 
     * @param offset
     * @return boolean */
    public static boolean startsWith(StringBuilder builder, String prefix,
            int offset) {
        int i = builder.indexOf(prefix, offset);
        boolean startsWith = i == offset;
        return startsWith;
    }
}

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