42         public static char charAt( string str, int index )  in charAt()
48         public static bool endsWith( string str, string value )  in endsWith()
54         public static int indexOf( string str, char value )  in indexOf()
60         public static int indexOf( string str, char value, int startIndex )  in indexOf()
66         public static int indexOf( string str, string value )  in indexOf()
72         public static int indexOf( string str, string value, int startIndex )  in indexOf()
78         public static int lastIndexOf( string str, char value )  in lastIndexOf()
84         public static int lastIndexOf( string str, string value )  in lastIndexOf()
90         public static int length( string str )  in length()
96         public static string replace( string str, char oldValue, char newValue )  in replace()
107         public static string replaceAll( string str, string regex, string newValue )  in replaceAll()
112         public static string replaceFirst( string str, string regex, string replacement )  in replaceFirst()
119         public static bool startsWith( string str, string value )  in startsWith()
126         public static string substring( string str, int startOffset )  in substring()
131         public static string substring( string str, int startOffset, int endOffset )  in substring()
138         public static char[] toCharArray( string str )  in toCharArray()
144         public static string toUpperCase( string str )  in toUpperCase()
150         public static string trim( string str )  in trim()