What does null mean in java?

1140

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How to do encapsulation in java?

1111

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Can one thread block the other thread?

1076

---

Explain about instanceof operator in java?

1124

---

Difference between method overloading and method overriding in java ?

1145

---

Explain about main thread in java?

1161

---

What access modifiers can be used for class ?

1086

---

Explain when classnotfoundexception will be raised ?

1097

---

Explain when noclassdeffounderror will be raised ?

1109

---

What all methods are used to prevent thread execution ?

1083

---

What are inner classes or non static nested classes in java?

1224

---

What are packages in java?

1818

---

Difference between ‘is-a’ and ‘has-a’ relationship in java?

1051

---

Explain why wait(), notify() and notifyall() methods are in object class rather than in thread class?

1070

---

Can we override constructors in java?

1224

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