Declaring a new object and calling some of its methods on creation

 

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  • Efficiency of Java “Double Brace Initialization”? 15 answers
  • Is this a variation of an anonymous inner class? 3 answers

    • You're deriving an anonymous subclass of JPanel and then declaring a initialiser block for it.

    Here's the subclass: 

    new JPanel(){};

    Note the braces. And the initaliser is declared within it: 

    new JPanel() {
 { 
    // static initaliser
 }
};

    The derivation of a subclass is simply to allow the initialiser block. This is called double-brace initialisation, and some worry about the abuse of creating an anonymous class simply for this purpose.

    See here for more info about the initialiser block.

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