Can a class be a super class and a sub-class at the same time? Give example.

1498

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What's the access scope of protected access specifier?

1008

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I want to re-reach and use an object once it has been garbage collected. How it's possible?

981

---

How can we pass argument to a function by reference instead of pass by value?

1073

---

Can main() method in java can return any data?

1143

---

Can we declare the main method of our class as private?

971

---

What are loops in java? What are three types of loops?

1002

---

What are java packages? What's the significance of packages?

1259

---

In java, how we can disallow serialization of variables?

970

---

What are loops in java?

1200

---

Why runnable interface is used in java?

1085

---

How garbage collection is done in java?

1012

---

There are two classes named classa and classb. Both classes are in the same package. Can a private member of classa can be accessed by an object of classb?

1447

---

What is the base class in java from which all classes are derived?

946

---

Can we declare a class as abstract without having any abstract method?

969

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