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bhaskkar
java
1 Answer(s)      5 years ago
Posted in : Java Beginners


what nullpointerexcetion and how can be handle it?

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December 24, 2009 at 11:02 AM


Hi Friend,

Null pointer exceptions are errors thrown by the Java compiler when we use a variable that hasn't been defined or access a field or invoke a method of a null object.


You can handle it by using null object like this:
String f = null ;
if(f!==null){
System.out.println("Length is:"+ f.length());
}

If you run the above code, you will not get the Exception as we have used the null object otherwise you will get the Exception.

Thanks


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