Java Reference
In-Depth Information
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// Fig. 11.5: UsingExceptions.java
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// try...catch...finally exception handling mechanism.
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public
class
UsingExceptions
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{
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public
static
void
main(String[] args)
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{
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try
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{
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throwException();
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}
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catch
(Exception exception)
// exception thrown by throwException
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{
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System.err.println(
"Exception handled in main"
);
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}
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doesNotThrowException();
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}
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// demonstrate try...catch...finally
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public
static
void
throwException()
throws
Exception
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{
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try
// throw an exception and immediately catch it
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{
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System.out.println(
"Method throwException"
);
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throw
new
Exception();
// generate exception
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}
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catch
(Exception exception)
// catch exception thrown in try
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{
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System.err.println(
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"Exception handled in method throwException"
);
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throw
exception;
// rethrow for further processing
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// code here would not be reached; would cause compilation errors
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}
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finally
// executes regardless of what occurs in try...catch
{
System.err.println(
"Finally executed in throwException")
;
}
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// code here would not be reached; would cause compilation errors
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}
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// demonstrate finally when no exception occurs
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public
static
void
doesNotThrowException()
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{
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try
// try block does not throw an exception
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{
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System.out.println(
"Method doesNotThrowException"
);
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}
Fig. 11.5
|
try
…
catch
…
finally
exception-handling mechanism. (Part 1 of 2.)
