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What is the difference between user defined class and built in class?
Wiki User
∙ 11y ago
A built-in class is one that is provided by the Java vendor (those that follow the Java specifications will have at least the ones mentioned by the Java Documentation), while a user-defined class is one that is written by any third-party developer (either a library that a developer is using, or the code written by the developer themselves). You can easily identify which code is which by looking at the package name: java.*, sun.*, and javax.* namespaces are all built-in classes, while com.* namespaces are user-defined classes.
Wiki User
∙ 11y ago
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