Inheriting your own exceptions

          
// : c09:SimpleExceptionDemo.java
// Inheriting your own exceptions.
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.

class SimpleException extends Exception {
}

public class SimpleExceptionDemo {

  public void f() throws SimpleException {
    System.out.println("Throw SimpleException from f()");
    throw new SimpleException();
  }

  public static void main(String[] args) {
    SimpleExceptionDemo sed = new SimpleExceptionDemo();
    try {
      sed.f();
    } catch (SimpleException e) {
      System.err.println("Caught it!");
    }
  }
} ///:~

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Inheriting your own exceptions : Exceptions « Language Basics « Java

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