Function pointer

Hi ,What is function pointer?How do i pass function pointer to a method?Thanks in Advance

[117 byte] By [pranathia] at [2007-11-26 19:01:03]

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# 1

> Hi ,> > What is function pointer?A pointer to a function> > How do i pass function pointer to a method?> You dont, pointers are not available in Java.> Thanks in AdvanceOkily dokily

ScarletPimpernela at 2007-7-9 20:44:19 >

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# 2

In java you can at least emulate a function pointer through a class that invokes Runnable. This won't allow you to pass a method around, but you can implement your logic in the run() method of the Runnable and then pass that Runnable around.

gimbal2a at 2007-7-9 20:44:19 >

# 3

The Java Programming Language doesn't provide function pointers in the usual sense.

In other languages (e. g. in C++) a function pointer is the address of a function. You can, for example, specify function pointers as parameters of functions.

In Java, you can use interfaces instead of function pointers. Declare a interface with (usually) a single method a provide different implementations. Then, instances of these implementations can be handled similarly as function pointers.

ProggerFromKupfera at 2007-7-9 20:44:19 >

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