Common Java software packages and common Java software packages

Common Java software packages and common Java software packages

Java. lang: language java core package. After the Object System String Throwable jdk1.2, the classes in this package are automatically imported.

Java. awt: defines the objects used for java graphic interface development.

Javax. swing: Provides controls for all windows desktop applications, such as Frame, Dialog, Table, and List. It is the java graphical interface library.

Java.net: all objects used for java Network programming are in this package.

Java. io: The objects used to operate data on the device are all in this package. For example, read hard disk data and write data to the hard disk.

Java. util: java toolkit, time object, and collection framework.

// Java. applet: application + let client java applet. Server + let-> servlet server java applet.

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