How do try-with-resources and finally differ in Java?

What is the difference between try-with-resources and finally in Java?

Try-with-resources automatically closes resources, while finally is used for cleanup but requires manual closure.

Can you give an example of try-with-resources?

Sure! Here's a simple example:

try (BufferedReader br = new BufferedReader(new FileReader("file.txt"))) {
    String line;
    while ((line = br.readLine()) != null) {
        System.out.println(line);
    }
} catch (IOException e) {
    e.printStackTrace();
}

What happens if I don't use try-with-resources?

If you don't use try-with-resources, you must manually close the resource in a finally block, which can lead to resource leaks if not done properly.

Are there any performance differences between the two?

Generally, try-with-resources is preferred for resource management, but performance differences are negligible in most cases.