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Staying Clear Of ClassCastException in Java: Ideal Practices


Exactly how do I prevent a ClassCastException?

To prevent ClassCastException, make certain that you are casting challenge the proper course. This can be done by utilizing instanceof driver to inspect the kind of the things prior to casting it. You can likewise utilize the suitable spreading technique, such as casting to a certain user interface or superclass, to make sure that the things can be cast to the wanted course.

Below is an instance of code that tosses a ClassCastException:

 String str="Hi";

. Integer num=( Integer) str;

In this instance, the string “Hi” is being cast to an Integer course, which is inappropriate. To prevent this mistake, you can utilize the instanceof driver to inspect the kind of the things prior to casting it:

 String str="Hi";

. if( str instanceof Integer) {

. Integer num =( Integer) str; 
.} 
else {

. System.out.println(" str is not a circumstances of Integer");

.
} 



.

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