Answer / Satendra Kumar

"Some Object-Oriented Programming (OOP) concepts in Java include encapsulation, inheritance, polymorphism, and abstraction."

What are the performance implications of interfaces over abstract classes?

1 Answers  

---

what is the difference between pagecontext and servletcontext?

5 Answers   JBA Infotech, TCS,

---

Difference between the paint() and repaint() methods?

1 Answers  

---

What does int [] mean in java?

1 Answers  

---

Difference between String and StringBuffer.

3 Answers   GE, IBM,

---

What is data type in computer?

1 Answers  

---

What is ternary operator in java?

1 Answers  

---

7) Suppose there is Student class like class student { int age; string name; } We want to store these objects in a HashMap. Do we need to override any methods in Student class? If any which ones and why? what if i just override equals or just hashcode? what will be the results in both the cases?

4 Answers   CSC, Nagarro, RBS,

---

how we can make a read-only class in java?

1 Answers  

---

Can we have a method name same as class name in java?

1 Answers  

---

Write a program to calculate factorial in java?

1 Answers  

---

Difference between String and String Buffer?

3 Answers  

---