What is concurrent hashmap and its features?

0 Answers  

---

What are the drawbacks of singleton class?

0 Answers  

---

Why do we need hashset in java?

0 Answers  

---

hi to all,i have a question on static block. i saved below as test.java class test extends a { static { System.out.println("test static"); } public static void main(String []dfs) { } } class a { static { System.out.println("a static"); } public static void main(String []asdf) { } } o/p as static test static but if i change base class as test class then class test { static { System.out.println("test static"); } public static void main(String []dfs) { } } class a extends test { static { System.out.println("a static"); } public static void main(String []asdf) { } } o/p test static explain me why "a static" wasn't print in second code when it is in derived class

1 Answers  

---

How can u create the Object of class Without using "New" opertor?

3 Answers   IBM, TCS,

---

Can java cast null?

0 Answers  

---

Can sleep() method causes another thread to sleep?

0 Answers  

---

How to instantiate member inner class?

0 Answers  

---

What is string example?

0 Answers  

---

Every class extends object but why it is not possible for every object to invoke clone() method. ideally protected methods should be accessible from sub classes. isn't it?

2 Answers  

---

Different types of modifiers?

8 Answers   RoboCom,

---

What is difference between static variable and global variable?

0 Answers  

---