Learn Fundamentals of Java Programming “Java Libraries in Java Programming ” Lesson 22

Java Libraries

The power of Java comes from the hundreds of Java classes that are already prebuilt and can be used in your programs. To use a prebuilt class and associated methods in those class, all you have to do is to use the keyword import to import the class from the package in which it is contained into your space. The import statements must appear before any class definitions in the file. In the following sections, we will look at some useful classes.