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Tip of the Day
Language: Java
Expertise: Beginner
Jul 2, 2001

WEBINAR:

On-Demand

Building the Right Environment to Support AI, Machine Learning and Deep Learning


Avoiding Unnecessary Catch Blocks


The result of adding unnecessary catch blocks is code like this, where exceptions are caught and then immediately re-thrown:
 
    try
    {
        // some code here
    }
    catch (Exception e)
    {
        throw e;
    }
    finally
    {
        // Cleanup code here
    }

There seems to be a prevalent notion that a try block must be followed by a corresponding catch block. This is not true. Java does not mandate a catch block to always follow a try block. You can actually shorten the above code by eliminating the unnecessary catch block as shown:
 
    try
    {
        // some code here
    }
    finally
    {
        // Cleanup code here
    }
Navneet Gupta
 
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