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  1. operators - Use of "instanceof" in Java - Stack Overflow

    74 instanceof is used to check if an object is an instance of a class, an instance of a subclass, or an instance of a class that implements a particular interface. Read more from the Oracle …

  2. What is the 'instanceof' operator used for in Java?

    The java instanceof operator is used to test whether the object is an instance of the specified type (class or subclass or interface). The instanceof in java is also known as type comparison …

  3. java - How to determine an object's class? - Stack Overflow

    If class B and class C extend class A and I have an object of type B or C, how can I determine of which type it is an instance?

  4. Java: Instanceof and Generics - Stack Overflow

    Oct 15, 2009 · Cannot perform instanceof check against type parameter E. Use instead its erasure Object since generic type information will be erased at runtime What is the better way …

  5. java - How instanceof will work on an interface - Stack Overflow

    Nov 21, 2012 · 7 You do an instanceof check of a reference against an instance, and it checks the type of instance that particular reference is pointing to. Now since you can create a reference …

  6. java - Is null check needed before calling instanceof? - Stack …

    Jun 1, 2010 · The instanceof operator does not need explicit null checks, as it does not throw a NullPointerException if the operand is null. At run time, the result of the instanceof operator is …

  7. java - What is the difference between instanceof and Class ...

    The syntax is a instanceof Bref not a instanceof Bref.class. The second argument to the instanceof operator is a class name, not an expression resolving to a class object instance.

  8. Test if object is instanceof a parameter type - Stack Overflow

    Then you can get the class of that object, see java.lang.Class<T> and find if it's the same as the object in question. But note that this goes counter the very reason we have genrics: using a …

  9. The performance impact of using instanceof in Java

    Sep 19, 2008 · 363 I am working on an application and one design approach involves extremely heavy use of the instanceof operator. While I know that OO design generally tries to avoid …

  10. java - When to use Class.isInstance () & when to use instanceof ...

    Jan 1, 2012 · Possible Duplicate: Java isInstance vs instanceOf operator When to use Class.isInstance() and when to use instanceof operator? Java is providing two option for …