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

1088

---

Difference between static synchronization vs. Instance synchronization?

1180

---

Explain numeric promotion?

1166

---

What is contract between hashcode and equal method?

1102

---

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

1076

---

What is java’s garbage collected heap?

1038

---

What is re-factoring in software?

1104

---

What is static synchronization?

1164

---

What is annotation in java?

1121

---

What are static methods?

1108

---

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

1151

---

Which package is imported by default?

1135

---

What are the restrictions imposed on method overriding?

1066

---

What is hash code collision?

1107

---

What do you mean by order of precedence and associativity?

998

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