How can I prevent java.lang.NumberFormatException: For input string: "N/A"?

java.lang.NumberFormatException: For input string: "N/A" occurs when you try to parse a string that cannot be converted to a number, such as the string "N/A".

To prevent this exception, you can use a try-catch block to catch the exception and handle it appropriately. For example:

try {
    int number = Integer.parseInt("N/A");
} catch (NumberFormatException e) {
    // Handle the exception
}

Alternatively, you can check the input string before trying to parse it, and only attempt to parse it if it is a valid number. For example:

String input = "N/A";

if (input.matches("-?\\d+(\\.\\d+)?")) {
    int number = Integer.parseInt(input);
} else {
    // Handle invalid input
}

This will only attempt to parse the input string if it is a valid number.

I hope this helps! Let me know if you have any questions.