May 2024
Intermediate to advanced
889 pages
37h 5m
English
Content preview from Java Programming by Pearson
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Packages and Interfaces • 263
4. Importing a package explicitly means that all classes and interfaces are not imported rather the
desired class/interface is imported by explicitly mentioning the name of class/interface.
5. For creating a user-defi ned package package statement must be the fi rst statement in the program fi le.
6. Each import statement must be placed on a separate line.
7. The CLASSPATH environment variable sets the path of classes used in the program.
8. Before using a user-defi ned package CLASSPATH must have been set.
9. An interface is a class where all the methods are declared but not defi ned and all ...
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