What does anonymous class mean in java?

[Khan Baba]

Hello Guys,

I need help to aware about the "anonymous class" in java programming. I know what is simple java class and it's declaration. But the "anonymous class" concept is new for me. I wonder if you let me know something regarding the anonymous class of java. It will be great you provide suitable example for anonymous class. I am waiting for your reply.

[Zecho]

An anonymous class can have constructors because the name of a constructor must be identical to that class (and it did not name). Instead, the design parameters are given to the constructor of the super class. In particular, each time an inner class implements an interface, it can not have design parameters. It should nevertheless always supply the parentheses, as in this example:

new TypeInterface1() (Attributes & methods of anonymous inner class)

[Reegan]

Hi,

I following example the method "lancerMinuteur1 ()" create "Timer" in the anonymous class:

private void lancerMinuteur1(Final boolean beep) 
{
  new ActionListener()
 {
     private Timer TimerN = new Timer(1000, this);
     { TimerN.home(); }
     Public void actionPerformed(ActionEvent e)
   {
        time.setText(DateFormat.getTimeInstance(DateFormat.MEDIUM).format(new Date()));
        if (beep) Toolkit.getDefaultToolkit().beep();
     }
  }; 
}

[opaper]

In java programming the class can be of anonymous type. It means "anonymous classes " can be declared without an identifier. In some situation this concept is very useful, such as when we replace a name of class with a "typedef name", as shown in the following:

typedef struct
{
unsigned Q;

unsigned W;

} POINT;

[MindSpace]

The use of anonymous classes generally leads to codes barely legible. We reserve the highly case individuals where the definition of the anonymous class is brief. The anonymous class is particularly interesting in the definition of event Listeners. The anonymous class can access the instance as well as the static variables. It are also essential when we want a reference to member of the class to appear as though it were not contained in a separate class.

[Modifier]

Hi friend,

The anonymous class of java comprises some restriction, which are as follows:

• Anonymous class can't be returned as return values from functions.
• Anonymous class can't have a Destructor or Constructor .
• Anonymous class can't be passed as an arguments to functions.