Java try(): Auto Resource Management Guide

Introduced in Java 9, try() is a new feature that allows for the creation of a resource management block. This allows for resources to be automatically closed at the end of the code block without the need for manual closure, thus avoiding the cumbersome try-catch-finally structure.

The close() method of a resource will be automatically called by try() after the resource is used, ensuring proper release of resources. This can improve the clarity and readability of the code, while also reducing the risk of resource leaks caused by forgetting to close resources. Using try() requires the resource class to implement the AutoCloseable interface.

Here is an example code:

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

In this example, the BufferedReader is placed in a try-with-resources block, which automatically closes the BufferedReader after the code block has finished executing, eliminating the need to manually call the close() method.