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toString()

mansi gupte
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Joined: Dec 30, 2008
Posts: 72
toString() method , can someone explain its use with a simple practical/ day to day example?
Christophe Verré
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Joined: Nov 24, 2005
Posts: 14687
    
  16

You usually return some meaningful content from toString :

This method will automatically be called when used with methods such as System.out.println :


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Balagopal Kannampallil
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Joined: Oct 18, 2004
Posts: 136

I am sure that most of the developers have gone through this issue. Take an example, you have a class namely MyClass. You make a new instance

Now you try to print mymy, the result you will be seeing is the class name followed by weird characters like "MyClass@10b62c9" (Something like this). This is because you have not overridden the toString() method in your MyClass class. So MyClass will use the toString() method of its superclass Object.
So if you want to see some meaningful things in place of "MyClass@10b62c9" when you print mymy. You will have to override toString() method in MyClass and return some meaningful string. For example:

Now if you print mymy, you will see "Hi I am MyClass".

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