What are the rules of catchable Exceptions in Try Catch blocks in Java?

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Aryan Kumar · Answer

Sure, I can help you with that.

Here are the rules for checked exceptions in try-catch blocks in Java:

Checked exceptions must be handled or specified. This means that if a method throws a checked exception, the method must either handle the exception or specify the exception using the throws keyword. If the method does not handle or specify the exception, the compiler will not allow the code to compile.
Checked exceptions can be caught in a try-catch block. A try-catch block is a block of code that can be used to handle exceptions. If an exception is thrown in a try-catch block, the exception will be caught by the catch block and the code in the catch block will be executed.
Checked exceptions can be propagated. Propagating an exception means that the exception is not handled in the try-catch block and is instead passed on to the calling method. The calling method can then handle the exception or propagate it further.

Here is an example of a try-catch block that handles a checked exception:

public void readFile(String fileName) throws IOException {
  try {
    FileInputStream fis = new FileInputStream(fileName);
    int data = fis.read();
    ...
  } catch (IOException e) {
    // Handle the exception
    System.out.println("Error reading file: " + e.getMessage());
  }
}

In this example, the readFile() method throws an IOException if there is an error reading the file. The try-catch block catches the IOException exception and prints an error message if the exception is thrown.

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What are the rules of catchable Exceptions in Try Catch blocks in Java?

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