What are the differences between abstract class and interface?

990

---

What is the static variable?

1057

---

Can we initialize the final blank variable?

1034

---

How to make a read-only class in java?

1079

---

How to create packages in java?

895

---

Can you achieve runtime polymorphism by data members?

1076

---

Why is multiple inheritance not supported in java?

965

---

What is java instanceof operator?

989

---

Can we declare a constructor as final?

1209

---

Can you declare the main method as final?

957

---

What are filterstreams?

1025

---

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

910

---

What is the platform?

945

---

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.

978

---

How to perform merge sort in java?

1002

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