What are the differences between abstract class and interface?

1069

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What is the static variable?

1118

---

Can we initialize the final blank variable?

1087

---

How to make a read-only class in java?

1155

---

How to create packages in java?

942

---

Can you achieve runtime polymorphism by data members?

1143

---

Why is multiple inheritance not supported in java?

1025

---

What is java instanceof operator?

1038

---

Can we declare a constructor as final?

1301

---

Can you declare the main method as final?

1008

---

What are filterstreams?

1073

---

Can you write a java class that could be used both as an applet as well as an application?

957

---

What is the platform?

996

---

Write a regular expression to validate a password. A password must start with an alphabet and followed by alphanumeric characters; its length must be in between 8 to 20.

1023

---

How to perform merge sort in java?

1055

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