Java String Camel Case to Underscore camelCase2UnderScoreCase(String str)

Description

camel Case Under Score Case

License

Open Source License

Declaration

public static final String camelCase2UnderScoreCase(String str) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

public class Main {

    public static final String camelCase2UnderScoreCase(String str) {
        StringBuilder sb = new StringBuilder();
        char[] chars = str.toCharArray();
        for (int i = 0; i < chars.length; i++) {
            char c = chars[i];
            if (Character.isUpperCase(c)) {
                sb.append("_").append(Character.toLowerCase(c));
            } else {
                sb.append(c);/*from   w  w  w  .  j a va2 s .com*/
            }
        }
        return sb.toString();
    }

    public static String toString(Object object) {
        return toString(object, null);
    }

    public static String toString(Object object, String defaultValue) {
        if (object == null)
            return defaultValue;
        return String.valueOf(object);
    }
}

Related

1. camelCase2UnderscoreLowercase(String name)
2. camelCaseToLowerCaseUnderline(String name)
3. camelCaseToUnderline(String name)
4. camelCaseToUnderscore(final String camelCaseString)