What are the differences between abstract class and interface?

1166

---

What is the static variable?

1183

---

Can we initialize the final blank variable?

1131

---

How to make a read-only class in java?

1242

---

How to create packages in java?

994

---

Can you achieve runtime polymorphism by data members?

1204

---

Why is multiple inheritance not supported in java?

1094

---

What is java instanceof operator?

1105

---

Can we declare a constructor as final?

1406

---

Can you declare the main method as final?

1069

---

What are filterstreams?

1118

---

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

1005

---

What is the platform?

1056

---

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.

1093

---

How to perform merge sort in java?

1123

---