Lesson: Numbers and Strings
This section begins with a discussion of the
Number
class (in the
java.lang package) and its subclasses. In particular, this section talks about the
situations where you would use instantiations of these classes rather than the
primitive data types. Additionally, this section talks about other classes you might need to work
with numbers, such as formatting or using mathematical functions to complement the
operators built into the language.
Strings, which are widely used in Java programming, are a sequence of characters.
In the Java programming language, strings are objects. This section describes using the
String
class to create and manipulate strings. It also compares the
String and
StringBuilder classes.
