The String and StringBuffer Classes

Converting Strings to Numbers

The String class itself does not provide any methods for converting a String to a floating point, integer, or other numerical type. However, four of the "type wrapper" classes (Integer, Double, Float, and Long) provide a class method named valueOf() that converts a String to a that an object of that type. Here's a small, contrived example of the Float class's valueOf():

String piStr = "3.14159";
Float pi = Float.valueOf(piStr);

The String and StringBuffer Classes