Answer Posted / ranganathkini

A Singleton is a class which at any given time has only one
instance and it does not allow more instances to be created.
Such classes do not have an accessible constructor, for example:

public class Singleton {
// class is automatically instantiated when the
// class is loaded
private static Singleton instance = new Singleton()

// constructor is made inaccessible by declaring
// it private
private Singleton() { ... }

// Access to the single instance of the class is
// provided by a static accessor method
public static Singleton getInstance() {
// returns a reference of the private instance
return instance;
}

// rest of the class implementation
}

What sorting algorithm does javascript use?

994

---

What does function identity () do?

968

---

What are the two categories of data types in the java programming language?

994

---

Can we override the static methods?

1034

---

What is the maximum size of hashmap in java?

1005

---

What is a default constructor and also define copy contrucyor?

1111

---

What is valid keyword in java?

1002

---

a thread is runnable, how does that work? : Java thread

1020

---

How does a for loop work java?

1045

---

What are pass by reference and pass by value?

988

---

Can we serialize static variables in java?

1098

---

What is thread life cycle?

968

---

Explain when noclassdeffounderror will be raised ?

1055

---

How does a for loop work?

989

---

What is an argument in java?

941

---