Answer Posted / manoj kumar

public class DateUtil implements Serializable,Cloneable {

   private static volatile Dateutil instance;

   private DateUtil() {
     //no-op
   }

   public static DateUtil getInstance() {

      if(instance==null) {
        synchronized(DateUtil.this) {
           if(instance==null) {
              instance = new DateUtil();
           }
        }
        return instance;
      }
   
   protected Object readResolve() {
     return instance;
   }

   public Object clone() throws CloneNotSupportedException {

     super.clone();

     throw new CloneNotSupportedException;
  }

What are methods in java?

956

---

Is integer a class?

1030

---

What is entry in java?

987

---

Distinguish between a predicate and a function?

955

---

What does localhost mean?

901

---

What is constructor in java ?

1142

---

Can you declare a private method as static?

1116

---

Explain about varargs in java?

1079

---

What is Mutex (Mutual Exclusion Object) ?

1100

---

Is 64bit faster than 32 bit?

1026

---

Which of the following classes will have more memory allocated?

985

---

Why object class is super class for every class in java?

987

---

Differentiate between a class and an object.

1001

---

How is it possible in java programming for two string objects with identical values not to be equal under the == operator?

989

---

How to split a string in java?

1086

---