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2017-04-07
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Exceptions and exception handling

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Introduction

Objects of type Throwable and its subtypes can be sent up the stack with the throw keyword and caught with try…catch statements.

Syntax

  • void someMethod() throws SomeException { } //method declaration, forces method callers to catch if SomeException is a checked exception type

  • try {

    someMethod(); //code that might throw an exception 
    

    }

  • catch (SomeException e) {

     System.out.println("SomeException was thrown!"); //code that will run if certain exception (SomeException) is thrown
    

    }

  • finally {

     //code that will always run, whether try block finishes or not
    

    }

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