Java String Capitalize capitalize(String str)

Description

Borrowed from commons-lang StringUtils.capitalize() method.

License

Eclipse Distribution License

Parameter

Parameter	Description
str	the String to capitalize, may be null

Return

the capitalized String, null if null String input

Declaration

public static String capitalize(String str) 

Method Source Code

//package com.java2s;
/*//w  ww . j  a va  2 s  .  c  o  m
 * Copyright (C) 2009-2010, Google Inc.
 * and other copyright owners as documented in the project's IP log.
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 * This program and the accompanying materials are made available
 * under the terms of the Eclipse Distribution License v1.0 which
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 * without modification, are permitted provided that the following
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public class Main {
    /**
     * Borrowed from commons-lang <code>StringUtils.capitalize()</code> method.
     *
     * <p>
     * Capitalizes a String changing the first letter to title case as per
     * {@link Character#toTitleCase(char)}. No other letters are changed.
     * </p>
     *
     * A <code>null</code> input String returns <code>null</code>.</p>
     *
     * @param str
     *            the String to capitalize, may be null
     * @return the capitalized String, <code>null</code> if null String input
     * @since 4.0
     */
    public static String capitalize(String str) {
        int strLen;
        if (str == null || (strLen = str.length()) == 0) {
            return str;
        }
        return new StringBuffer(strLen)
                .append(Character.toTitleCase(str.charAt(0)))
                .append(str.substring(1)).toString();
    }
}

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