remove last character from string java

private static String removeLastChar(String str) {
    return str.substring(0, str.length() - 1);
}public static String removeLastCharacter(String str) {   
	String result = null;   
    if ((str != null) && (str.length() > 0)) {      
    	result = str.substring(0, str.length() - 1);   
    }   
    
    return result;
}