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Core Java Interview Questions and Answers

Ques 86. What are the threads will start, when you start the java program?

Ans. Finalizer/DestroyJavaVM, Main, Reference Handler, Signal Dispatcher

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Ques 87. Can there be an abstract class with no abstract methods in it?
Ans. Yes
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Ques 88. Can an Interface be final?
Ans. No
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Ques 89. Can an Interface have an inner class?
Ans.
Yes.

public interface abc{
static int i=0; 
void dd();
class a1{
a1(){
int j;
System.out.println("inside");
};
public static void main(String a1[])
{
System.out.println("in interfia");
}
}
}
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Ques 90. Can we define private and protected modifiers for variables in interfaces?
Ans. No
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