Java String Decamel Case deCamelCase(final String original)

Description

Converts a camel cased string into an underscored one, e.g.

License

BSD License

Parameter

Parameter	Description
original	the camel cased string

Return

de-camel-cased string (or null if original is null)

Declaration

public static String deCamelCase(final String original) 

Method Source Code

//package com.java2s;
//License from project: BSD License 

public class Main {
    /**/*from  ww  w .  j a  v a 2  s .  co  m*/
     * Converts a camel cased string into an underscored one, e.g. {@code fooBar}
     * {@literal ->} {@code foo_bar}
     *
     * @param original
     *     the camel cased string
     * @return de-camel-cased string (or null if original is null)
     */
    public static String deCamelCase(final String original) {
        if (original == null)
            return null;
        if (original.isEmpty())
            return original;
        return original.replaceAll("(.)(\\p{Upper})", "$1_$2").toLowerCase();
    }
}

Related

1. decamel(String name)
2. deCamelCap(String s)
3. deCamelCase(String camelCased, String delim)
4. deCamelCase(String identifier)
5. deCamelCaseStyle(String style)
6. decamelise(String testName)