Get Truncated String : String format « Data Type « Java

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2. Data Type
3. String format

Get Truncated String

     

/* infoScoop OpenSource
 * Copyright (C) 2010 Beacon IT Inc.
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * as published by the Free Software Foundation.
 * 
 * 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 Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/lgpl-3.0-standalone.html>.
 */


/**
 * A utility class related to character string.
 * 
 * @author Eiichi Sakurai
 */
 
 
import java.io.ByteArrayOutputStream;
import java.io.UnsupportedEncodingException;

public class Util{
  
  /**
   * @param originalString Original character string
   * @param byteLength A necessary byte length
   * @param charset Because we use DB2, we fix "UTF-8".
   * @return
   * @throws UnsupportedEncodingException
   */
  public static String getTruncatedString(String originalString, int byteLength, String charset) throws UnsupportedEncodingException{
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    byte[] originalBytes = originalString.getBytes(charset);
    if(originalBytes.length <= byteLength) return originalString;
    out.write(originalBytes, 0 , byteLength + 1);
    String result = new String(out.toByteArray(), charset);
    return result.substring(0, result.length()-1);
  }
}

   
    
    
    
    
  

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