Java Exception Handling & Best Practices

Exception handling is one of the powerful mechanisms in Java to manage runtime errors so that the normal flow of the application can be maintained. There are five keywords used in handling exceptions in Java: try, catch, finally, throw, and throws.

Need to prepare for an upcoming interview for your Bakend Senior Engineer or Technical Lead or Architect position. You can buy Most common Interview Question Bank from this buy link https://topmate.io/diptendu_das

1. Try-Catch Block:

The try block encloses the code which might throw an exception. The catch block is used to catch the exceptions thrown by the try block.

try {
    // Code that may throw an exception
} catch (ExceptionType1 e) {
    // Handle exception of ExceptionType1
} catch (ExceptionType2 e) {
    // Handle exception of ExceptionType2
} catch (Exception e) {
    // Handle any other exceptions
}

2. Throwing Exceptions:

You can manually throw an exception using the throw keyword. This is generally used when your code cannot recover from an error or when it encounters an unusual state.

if (someCondition) {
    throw new Exception("SomeCondition was true!");
}

3. Creating Custom Exceptions: