Abbreviate string : String Format « Data Type « Java Tutorial

 * $Revision: 10205 $
 * $Date: 2008-04-11 15:48:27 -0700 (Fri, 11 Apr 2008) $
 * Copyright (C) 2004-2008 Jive Software. All rights reserved.
 * This software is published under the terms of the GNU Public License (GPL),
 * a copy of which is included in this distribution, or a commercial license
 * agreement with Jive.

import java.text.BreakIterator;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;

 * Utility class to peform common String manipulation algorithms.
public class StringUtils {

    // Constants used by escapeHTMLTags
    private static final char[] QUOTE_ENCODE = """.toCharArray();
    private static final char[] AMP_ENCODE = "&".toCharArray();
    private static final char[] LT_ENCODE = "<".toCharArray();
    private static final char[] GT_ENCODE = ">".toCharArray();

    private StringUtils() {
        // Not instantiable.

     * Abbreviates a string to a specified length and then adds an ellipsis
     * if the input is greater than the maxWidth. Example input:
     * <pre>
     * </pre>
     * and a maximum length of 20 characters, the abbreviate method will return:
     * <pre>
     *      user1@jivesoftware.c...
     * </pre>
     * @param str the String to abbreviate.
     * @param maxWidth the maximum size of the string, minus the ellipsis.
     * @return the abbreviated String, or <tt>null</tt> if the string was <tt>null</tt>.
    public static String abbreviate(String str, int maxWidth) {
        if (null == str) {
            return null;

        if (str.length() <= maxWidth) {
            return str;
        return str.substring(0, maxWidth) + "...";


2.30.String Format
2.30.1.Format Calendar with String.format()
2.30.2.Format strings into table
2.30.3.String.format(): right pad a string
2.30.4.String.format(): left pad a string
2.30.5.Format a String (JDK1.5)
2.30.6.Pass value array to String.format()
2.30.7.Remove/collapse multiple newline characters.
2.30.8.Abbreviate string
2.30.9.Capital and uncapital strings
2.30.10.Transforms words to singular, plural, humanized (human readable), underscore, camel case, or ordinal form
2.30.11.Replace New Lines
2.30.12.Fix Line Separator
2.30.13.Abbreviates a String using ellipses in both sides.
2.30.14.Abbreviates a String using ellipses.
2.30.15.Capitalize the first character of the given string
2.30.16.Centers a String in a larger String of size size using the space character (' ').
2.30.17.Centers a String in a larger String of size size. Uses a supplied String as the value to pad the String with.
2.30.18.Centers a String in a larger String of size size. Uses a supplied character as the value to pad the String with.
2.30.19.Convert string to uppercase
2.30.20.Left pad a String with a specified String.
2.30.21.Left pad a String with a specified character.
2.30.22.Left pad a String with spaces (' ').
2.30.23.Makes the first letter caps and the rest lowercase.
2.30.24.Put quotes around the given String if necessary.
2.30.25.Quote a string so that it can be used as an identifier or a string literal in SQL statements.
2.30.26.Right pad a String with a specified String.
2.30.27.Right pad a String with a specified character.
2.30.28.Right pad a String with spaces (' ').
2.30.29.Trim off trailing blanks but not leading blanks
2.30.30.Truncate a String to the given length with no warnings or error raised if it is bigger.
2.30.31.Uncapitalizes a String changing the first letter to title case as per Character.toLowerCase(char). No other letters are changed.
2.30.32.Repeat String
2.30.33.Repeat a String repeat times to form a new String.
2.30.34.Strip Line Breaks
2.30.35.Trim any of the characters
2.30.36.Removes one newline from end of a String if it's there, otherwise leave it alone.
2.30.37.Removes newline, carriage return and tab characters from a string
2.30.38.Remove the leading and trailing quotes from str.