Answer Posted / ravi ranjan

Synchronization is capability to control multiple thread for
any share resources

What are the basic control structures?

500

---

How do you start a thread?

551

---

You're given a Boolean 2D matrix, can you find the number of islands?

597

---

Difference between concurrent hashmap and hashtable and collections

566

---

What is string made of?

531

---

---

What is scope of a variable?

603

---

What is the difference between ArrayList and Vector? which one is better in Java

605

---

What is a boolean in java?

578

---

What is unsigned char?

617

---

Is vector thread safe in java?

556

---

Is java code slower than native code?

556

---

Can we have any code between try and catch blocks?

558

---

List any five features of java?

568

---

What is the difference between class & object?

558

---

Objects or references which of them gets garbage collected?

532

---