Input/Output and Exception Handling - Java Concepts - page 698

In a method that is ready to handle a particular exception type, place the statements
that can cause the exception inside a try block, and the handler inside a catch
clause.

You install an exception handler with the try/catch statement. Each try block
contains one or more statements that may cause an exception. Each catch clause
contains the handler for an exception type. Here is an example:

try
{
String filename = . . .;
FileReader reader = new FileReader(filename);
Scanner in = new Scanner(reader);
String input = in.next();
int value = Integer.parseInt(input);
. . .
}
catch (IOException exception)
{
exception.printStackTrace();
}
catch (NumberFormatException exception)
{
System.out.println("Input was not a number");
}

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509

Three exceptions may be thrown in this try block: The FileReader constructor
can throw a FileNotFoundException , Scanner.next can throw a
NoSuchElementException , and Integer.parseInt can throw a
NumberFormatException .

S YNTAX 11.3 General try Block

try
{
statement
statement
. . .
}
catch (ExceptionClass exceptionObject)
{