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What is the role and purpose of the keyword finalize in resource management of objects?

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Answer from AI

In Java, the keyword finalize refers to the finalize() method, which is called by the garbage collector before an object is removed from memory. Its role is to give the object a chance to release or clean up resources (such as closing files, freeing network connections) that are not automatically managed.

However, using finalize() is not recommended because:

  • Calling finalize() is not guaranteed and may be delayed.
  • It reduces performance.
  • It is better to use try-with-resources constructs or explicitly close resources.

Example of a finalize() method:

@Override
protected void finalize() throws Throwable {
    try {
        // Resource cleanup
    } finally {
        super.finalize();
    }
}

The modern approach is to implement the AutoCloseable interface and manage resources explicitly.

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