Try Catch

During program execution an error can be thrown. Instead of ending the program an error can be caught and a certain code can be executed.

Error Throwing And Handling

Syntax for handling error:

try { // code that may throw exception. } catch (ExceptionType exceptionName) { // handling the error }

Let's look at the following example:

public class Main { public static void main(String[] args) { try { System.out.println("Executing try block code"); throw new Exception("My error message."); } catch (Exception e) { System.out.println("Catching an error:"); System.out.println(e.getMessage()); } } }

Output:

Executing try block code Catching an error: My error message.

Since an error is thrown in the try block, the code from the catch block is called.

Handling Runtime Exceptions

Such example is division by zero:

public class Main { public static void main(String[] args) { try { int a = 3; int b = 0; int c = a / b; } catch (Exception e) { System.out.println(e.getMessage()); } } }

Output:

/ by zero