OnJava8-Examples/exceptions/InheritingExceptions.java

// exceptions/InheritingExceptions.java
// (c)2021 MindView LLC: see Copyright.txt
// We make no guarantees that this code is fit for any purpose.
// Visit http://OnJava8.com for more book information.
// Creating your own exceptions

class SimpleException extends Exception {}

public class InheritingExceptions {
  public void f() throws SimpleException {
    System.out.println(
      "Throw SimpleException from f()");
    throw new SimpleException();
  }
  public static void main(String[] args) {
    InheritingExceptions sed =
      new InheritingExceptions();
    try {
      sed.f();
    } catch(SimpleException e) {
      System.out.println("Caught it!");
    }
  }
}
/* Output:
Throw SimpleException from f()
Caught it!
*/