What is a singleton class in Java? And How to implement a singleton class?

2 Answers  

---

What is a boolean in java?

0 Answers  

---

Can we declare a static variable inside a method?

0 Answers  

---

What is use of set in java?

0 Answers  

---

What are the important methods of java exception class?

0 Answers  

---

Hi Friends, I am new to java. Can u explain about thread concept.How i know one thread is locked, and how can i force or acquire another thread for lock . Finally how to know thread is released from lock. Explain types of lock(like method level and block level) in thread.

1 Answers  

---

What is java lang object?

0 Answers  

---

How variables are declared?

0 Answers  

---

How a variable is stored in memory?

0 Answers  

---

Is null a keyword in java?

0 Answers  

---

What is thread life cycle in java?

0 Answers  

---

Explain different types of thread priorities ?

0 Answers  

---