Java

Try-Catch-Finally

Catch me if you can! Safeguard your code using Try, Catch, Finally, and Throw blocks.

By TechCoder TeamLast updated: 2026-06-02
In a Nutshell

Catch me if you can! Safeguard your code using Try, Catch, Finally, and Throw blocks. This hands-on tutorial focuses on practical implementation of try-catch-finally concepts.

Try-Catch-Finally

To handle exceptions, we use the try...catch block.

Syntax

try {
  //  Block of code to try
}
catch(Exception e) {
  //  Block of code to handle errors
}
finally {
  // Block of code executed regardless of result
}

The finally Block

The finally block is optional. It is always executed whether an exception is handled or not. It is typically used to close resources (like files or database connections).

The throw Keyword

The throw statement allows you to create a custom error.

throw new ArithmeticException("Access denied");

The throws Keyword

Indicates that a method might throw an exception, passing the responsibility to the caller.

public void readFile() throws IOException { ... }

Interactive Code

Fix the crash from the previous lesson!

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Quiz

Quiz

Question 1 of 3

Which block is always executed, exception or not?

try
catch
finally
throw

Next Steps

We are writing good code, but it's getting long. Let's organize it using Packages.