Java String Sub String subString(String s, int length)

Description

sub String

License

Open Source License

Declaration

public static String subString(String s, int length) 

Method Source Code

//package com.java2s;
/**//from  w  w w  .  j  a va 2s.  c  o  m
The MIT License (MIT) * Copyright (c) 2015 ????
    
 * Permission is hereby granted, free of charge, to any person obtaining a copy of
 * this software and associated documentation files (the "Software"), to deal in
 * the Software without restriction, including without limitation the rights to
 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
 * the Software, and to permit persons to whom the Software is furnished to do so,
 * subject to the following conditions:
    
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
    
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

public class Main {

    public static String subString(String s, int length) {
        if (isBlank(s))
            return "";
        if (s.getBytes().length <= length)
            return s;
        char ch[] = null;
        if (s.length() >= length)
            ch = s.substring(0, length).toCharArray();
        else
            ch = s.toCharArray();
        int readLen = 0;
        StringBuffer sb = new StringBuffer("");
        for (int i = 0; i < ch.length; i++) {
            String c = String.valueOf(ch[i]);
            readLen += c.getBytes().length;
            if (readLen > length)
                return sb.toString();
            sb.append(c);
        }
        return sb.toString();
    }

    public static boolean isBlank(String str) {
        return (str == null || str.trim().equals("") || str.length() < 0);
    }

    public static boolean isBlank(Object str) {
        return (str == null || str.toString().trim().equals("") || str.toString().length() < 0);
    }

    public static boolean isBlank(String[] args) {
        return args == null || args.length == 0 ? true : false;
    }
}

Related

1. subString(String original, String regex)
2. subString(String parentStr, String startStr, String endStr)
3. substring(String S, int beginIndex, int endIndex)
4. substring(String s, int beginIndex, int endIndex)
5. substring(String s, int i, String substring, int direction)
6. substring(String s, int start)
7. substring(String s, int start, int length)
8. substring(String s, int start, int stop)
9. subString(String s, int startIndex, int count)