How can you make sure that your singleton class will always return single instance in multi-threaded environment?

978

---

Difference between static synchronization vs. Instance synchronization?

1068

---

Explain numeric promotion?

1045

---

What is contract between hashcode and equal method?

993

---

If you do not want your class to be inherited by any other class. What would you do?

961

---

What is java’s garbage collected heap?

932

---

What is re-factoring in software?

1001

---

What is static synchronization?

1058

---

What is annotation in java?

1008

---

What are static methods?

1005

---

What is a map? What are the implementations of map?

1055

---

Which package is imported by default?

1045

---

What are the restrictions imposed on method overriding?

976

---

What is hash code collision?

1021

---

What do you mean by order of precedence and associativity?

903

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