Java Programming and Technical Programming Program

Q. What is the purpose of finalization?

A. The purpose of finalization is to give an unreachable object the opportunity to perform any cleanup processing before the object is garbage collected. For example, closing a opened file, closing a opened database Connection.

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No need to release the resources in the finalize method we can release the resources in the finally block instead of finalize block......Advantages or uses of finalize
1)we can count the number of object are Garbage Collected
2) we can make unreachable object back to reachable....
10 years agoHelpfull: Yes(0) No(0)

Java Other Question

Q. What is the difference between error and an exception?

A. An error is an irrecoverable condition occurring at runtime. Such as OutOfMemory error. These JVM errors and you can not repair them at runtime. While exceptions are conditions that occur because of bad input etc. e.g. FileNotFoundException will be thrown if the specified file does not exist. Or a NullPointerException will take place if you try using a null reference. In most of the cases it is possible to recover from an exception (probably by giving user a feedback for entering proper values etc.). Q. What is the difference between yielding and sleeping?

A. When a task invokes its yield() method, it returns to the ready state. When a task invokes its sleep() method, it returns to the waiting state.