“Try-Catch-Finally” vs Throws

Its really confusing sometimes when different people ask me to use “try-catch” or throws in my code while they religiously do the code reviews… Some ask me to stick to try-catch and others suggest just throwing all exceptions Smile Smile Smile

After getting frustrated for a couple of times, I finally decided to read through various resources and find out for myself what’s best! Below is the gist of my findings:

What’s a Try-Catch Block?

Oh yes the answer lies in its definition. A try-catch block helps us handle an exception. So basically its our own Exception Handling Construct…So use it when you would want your program to handle its exceptions by itself.

Thus we should fall back to using Throws when your program/function isn’t handling the exceptions it raises. You simply pass on the exceptions to its higher layer Smile Pass the ball!!!

Hope this helps!

Comments

wget error–“zsh: parse error near &”

There is no doubt that I prefer wget way over any other type of downloads… Syntax: wget <DOWNLOAD_URL> If you get this error “ zsh: parse error near & ” then its probably because your download URL has a “&” so you should try giving your DOWNLOAD_URL in double quotes wget “<DOWNLOAD_URL>” If you are trying to download from a site which needs you to give your credentials then you can try giving it this way wget --http-user=<UserName> --http-password=<Password> “<DOWNLOAD_URL>” Hope this helps

How to Unpack a tar file on Windows?

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Apache Commons StringUtils.isEmpty() vs Java String.isEmpty()

You might want to test for if a String is empty many a times. Before we jump onto the numerous solutions available let us take a look at how we define “Empty String” The difference in the two methods given by Apache and Java are dependent on how we define an empty string. Java String.isEmpty returns a boolean true if the string’s length is zero. If the string has null it throws NullPointerException Apache StringUtils.isEmpty returns a boolean true if the string is either null or has length is zero Thus its purely dependent on how you are defining “empty string” in your program which will decide which function to use…BTW if you want to skip using Apache Commons funciton and would want to stick to java then you can have your own function like this: public static boolean isEmptyOrNull(String strStringToTest) { return strStringToTest == null || strStringToTest.trim().isEmpty(); }

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