Java String Starts Wtih startsWithIgnoreCase(String s, String prefix)

Description

Returns true iff s starts with prefix, ignoring case.

License

Open Source License

Return

true iff s.toUpperCase().startsWith(prefix.toUpperCase())

Declaration

public static boolean startsWithIgnoreCase(String s, String prefix) 

Method Source Code

//package com.java2s;
/*//from  w  w w  .j ava  2  s.  c  o  m
 * This program 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.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */

public class Main {
    /**
     * Returns true iff s starts with prefix, ignoring case.
     * @return true iff s.toUpperCase().startsWith(prefix.toUpperCase())
     */
    public static boolean startsWithIgnoreCase(String s, String prefix) {
        final int pl = prefix.length();
        if (s.length() < pl)
            return false;
        for (int i = 0; i < pl; i++) {
            char sc = s.charAt(i);
            char pc = prefix.charAt(i);
            if (sc != pc) {
                sc = Character.toUpperCase(sc);
                pc = Character.toUpperCase(pc);
                if (sc != pc) {
                    sc = Character.toLowerCase(sc);
                    pc = Character.toLowerCase(pc);
                    if (sc != pc)
                        return false;
                }
            }
        }
        return true;
    }
}

Related

1. startsWithIgnoreCase(String originalString, String checkPhrase)
2. startsWithIgnoreCase(String p_sStr, String p_sSubStr)
3. startsWithIgnoreCase(String s, int offset, int end, String lowerCase)
4. startsWithIgnoreCase(String s, String prefix)
5. startsWithIgnoreCase(String s, String prefix)
6. startsWithIgnoreCase(String s, String start)
7. startsWithIgnoreCase(String s, String w)
8. startsWithIgnoreCase(String searchIn, int startAt, String searchFor)
9. startsWithIgnoreCase(String searchIn, int startAt, String searchFor)