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Today, the Swing classes may be found in the javax.swing
package.
Note the javax, not java. This is because the Java
developers decided to place a number of packages -- Swing among them -- in what
they term "Java extension packages" (hence the 'x').
There's some history here:
- Swing was developed primarily for JDK 1.2 and beyond.
- Before JDK 1.2 Beta3, the swing classes were in a Sun private Java package:
com.sun.java.swing
- But then Sun moved it into a different package, which is part of the
Java Standard Extensions:
javax.swing
In general, I wouldn't bother about any version of Java before 1.3.x;
more recent versions are much more stable, and support more features.
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