suppose in a class there is a code like this: { Set hs=new Hashset(); hs.add(new Emp("kathy",1000)); hs.add(new Emp("kathy",2000)); } how can u avoid the above code in your class as set won't allow duplicate objects?

3 Answers  

---

Can java cast null?

0 Answers  

---

What is javac used for?

0 Answers  

---

What is encapsulation? Elaborate with example?

1 Answers   BMC,

---

How to re-get an object that is collected by garbage collector?

1 Answers  

---

Why are there no global variables in java?

0 Answers  

---

What is the default size of set in java?

0 Answers  

---

Why is java so popular?

0 Answers  

---

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

2 Answers  

---

What language is pass by reference?

0 Answers  

---

What is runtime locatable code?

0 Answers   Cognizant,

---

Hi Friends, Can u give few interview questions which relates ArrayList and Hashmap. I mean how to link ArrayList and HashMap.I know this is not good way of asking questions like this , but i need

1 Answers   Microsoft, Wipro,

---