In Java, it is crucial to properly close objects to release resources and avoid memory leaks. Whether it's a file, socket, database connection, or any other resource, failing to close an object can lead to performance issues and potential crashes. Here are some best practices for closing objects in Java:

1. Use try-with-resources: Java 7 introduced the try-with-resources statement, which allows you to declare and initialize resources within the try block. The resources are automatically closed at the end of the block, and it is the safest and most efficient way to ensure that resources are properly closed.

2. Call the close() method: For objects that do not implement the AutoCloseable interface (which is required for try-with-resources), you should explicitly call the close() method in a finally block to ensure that the object is properly closed, no matter what happens within the try block.

3. Check for null: Before calling the close() method on an object, always check if the object is not null. Failure to do so can result in a NullPointerException, which can be easily avoided with a simple null check.

4. Use finally block: If you are unable to use try-with-resources and dealing with older Java versions, always use a finally block to ensure that the object is closed, even if an exception is thrown within the try block.

5. Handle exceptions gracefully: When closing an object, it is important to handle any exceptions that may occur during the closing process. This ensures that resources are released properly, and any errors are logged or handled appropriately.

By following these best practices, you can ensure that objects are closed properly in Java, leading to efficient resource management and a more stable and reliable application. Remember to always consider the lifecycle of an object and the potential impact of failing to close it. Proper resource management is an essential part of Java programming and can have a significant impact on the performance and stability of your applications.