Java String Sub String subStringByByte(String str, int byteLenth)

Description

sub String By Byte

License

Apache License

Declaration

public static String subStringByByte(String str, int byteLenth) 

Method Source Code

//package com.java2s;
/*/*from w  w  w .  j a  v  a 2  s. c  om*/
 * Copyright 2001-2006 The Apache Software Foundation
 *
 * 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 String subStringByByte(String str, int byteLenth) {
        if (str == null || "".equals(str))
            return str;
        if (byteLenth <= 0)
            return str;
        byte[] bs = str.getBytes();
        if (bs.length <= byteLenth)
            return str;

        int templengh = 0;
        for (int i = 0; i < str.length(); i++) {
            char aChar = str.charAt(i);

            templengh += String.valueOf(aChar).getBytes().length;
            if (templengh == byteLenth)
                break;
            else if (templengh > byteLenth) {
                templengh -= String.valueOf(aChar).getBytes().length;
                break;
            }
        }
        //System.out.println("The subStr is:'" +new String(str.getBytes(),0,templengh));       
        return new String(str.getBytes(), 0, templengh);
    }
}

Related

1. substringBetween(String str, String pos1, String pos2)
2. substringBetween(String str, String tag)
3. substringBetween(String str, String tag)
4. substringBetweenStrings(String within, String pre, String post)
5. subStringByByte(String orignal, int subcount)
6. substringByByteCount(String str, int byteCount)
7. subStringByBytes(String str, int toCount, String more)
8. substringByCodePoint(String inputStr, int codePointStart, int codePointEnd)
9. substringByMask(String baseString, String baseMask, String subMask)