Using finally block in java
Using finally with
exception
The finally block always executes
when the try block exits. This ensures that the finally block
is executed even if an unexpected exception occurs.
Finally bloack helps you to write any clean up codes, avoiding
resource leakage (closing the resource used in try block, ex: jdbc connection,
closing a file etc)
Finally allows the programmer to avoid having cleanup code
accidentally bypassed by a return, continue, or break. Putting
cleanup code in a finally block is always a good practice, even when
no exceptions are anticipated.
So catch is optional when using finally with catch
Syntax
try
{
}
catch(Exception e)
{
}
finally
{
}
try
{
} // catch is optional
finally
{
}
Jdk 1.5 released a new feature to release a resource using
Closeable Interface
Jdk 1.7 releases a new feature to with enhanced exception handing feature AutoCloseable super type for Closeable Interface.
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