Instance initializers allow you to execute construction code for an anonymous inner class.
实例初始化器允许您为一个匿名内部类执行构造代码。
Here, the ActionListener implementation is defined in place, as an anonymous inner class, and directly attached to the button.
这里，ActionListener实现是适时定义的，它定义为一个匿名内部类，并直接附加到按钮上。
This restriction is lifted in Groovy; you can change the values of variables in a containing scope from within an anonymous inner class.
Groovy则消除了这种限制，在Groovy中，匿名内部类可以修改外部的变量值。
This is an improvement over having to write a class any time an anonymous inner class is needed and can help keep the code more self-documenting.
相比于每个匿名内部类都要对应一个类的做法来说，这种方式是个极大的改进，同时也使得代码的可读性更好。
The only thing a class needs to be used this way is a default constructor (which allows you to create an anonymous inner class instance inheriting from your class).
惟一需要以这种方式使用一个类的是一个默认构造函数（它允许您创建继承自类的一个匿名内部类）。
The first set of enclosing braces delineates the construction of an anonymous inner class, and the second set delineates the instance initializer for the anonymous inner class.
第一组闭合括弧划定一个匿名内部类的构造，第二组划定匿名内部类的实例初始化语句块。
Anonymous inner class are local inner classes that don't have a class name.
匿名内部类是局部的内部类，它没有名字。
Anonymous inner class are local inner classes that don't have a class name.
匿名内部类是局部的内部类，它没有名字。
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