How to cast Object to boolean?

java casting primitive
Ravi Gupta picture Ravi Gupta · Feb 5, 2010 · Viewed 184k times · Source

How can I cast a Java object into a boolean primitive

I tried like below but it doesn't work

boolean di = new Boolean(someObject).booleanValue();

The constructor Boolean(Object) is undefined

Please advise.

Answer

Jon Skeet picture Jon Skeet · Feb 5, 2010

If the object is actually a Boolean instance, then just cast it:

boolean di = (Boolean) someObject;

The explicit cast will do the conversion to Boolean, and then there's the auto-unboxing to the primitive value. Or you can do that explicitly:

boolean di = ((Boolean) someObject).booleanValue();

If someObject doesn't refer to a Boolean value though, what do you want the code to do?

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