Answer: primitive type and instanceof operator : Questions « Operators « SCJP

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B. 


public class MainClass{
    public static void main(String[] argv){
        int a = 1;
        System.out.println(a instanceof Integer);
    }
}

java.lang.VerifyError: (class: MainClass, method: main signature: ([Ljava/lang/String;)V) Expecting to find object/array on stack
Exception in thread "main"