Answer Posted / ravikiran(aptech mumbai)

singleton class is the class contains only one object

What are mutable classes?

1129

---

What are variable names?

1019

---

Is boolean a data type in java?

1018

---

What is a layout manager and what are different types of layout managers available in java awt?

1308

---

Is the empty set a singleton?

1031

---

What's the purpose of using break in each case of switch statement?

1041

---

Why put method is idempotent?

970

---

Where is const variable stored?

988

---

What is the primitive type short?

1079

---

how do I create a runnable with inheritance? : Java thread

1030

---

Mention some interfaces implemented by linked list in java.

1080

---

Why volatile is used in java?

1146

---

What is the Difference between Final Class && Abstract Class?

1141

---

Can a constructor be protected?

1131

---

How do you convert an int to a double in java?

1112

---