How to Fix the \'Resource leak: \'in\' is never closed\' Warning in Eclipse?

Resource Leak Warning: Failure to Close Scanner 'in'

Eclipse issues the warning "Resource leak: 'in' is never closed" to flag potential resource leaks within code. In this specific scenario, the warning pertains to the usage of a Scanner object named 'in'.

In the provided code snippet:

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();
}

The program utilizes a Scanner to acquire user input. After reading the necessary data, however, the Scanner instance 'in' is never explicitly closed. This omission can lead to resource leaks, as the associated system resources remain allocated even after the code block has completed execution.

To resolve this issue and ensure proper resource management, it is essential to manually close the Scanner after finishing operations. This can be achieved by adding the following line of code:

in.close();

By closing the Scanner, you explicitly release the resources that it was utilizing, preventing potential resource leaks and ensuring code efficiency. Eclipse should no longer issue the warning once this modification is made.

The above is the detailed content of How to Fix the 'Resource leak: 'in' is never closed' Warning in Eclipse?. For more information, please follow other related articles on the PHP Chinese website!