How Can I Fix the Eclipse Scanner Resource Leak Warning?

Scanner Resource Leak: Addressing Eclipse Warning

Eclipse issues a resource leak warning ("'in' is never closed") when an input stream is instantiated but not subsequently closed, potentially leading to resource exhaustion and program malfunction.

In the code provided, the Scanner object 'in' is created to retrieve user input. However, the object is never explicitly closed, giving rise to the warning. Java recommends explicitly closing open resources to ensure proper resource management and avoid memory leaks.

To resolve the issue, it is essential to add a statement closing the Scanner object after it has served its purpose. The correct code should read as follows:

public void readShapeData() {
        Scanner in = new Scanner(System.in);
        System.out.println("Enter the width of the Rectangle: ");
        width = in.nextDouble();
        System.out.println("Enter the height of the Rectangle: ");
        height = in.nextDouble();
        
        // Close the Scanner to prevent resource leaks
        in.close();
}

By explicitly closing the Scanner object, the program ensures the release of any associated resources, such as memory buffers, file handles, or network connections, ensuring efficient resource management and preventing potential memory issues.

The above is the detailed content of How Can I Fix the Eclipse Scanner Resource Leak Warning?. For more information, please follow other related articles on the PHP Chinese website!