What does null mean in java?

1087

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How to do encapsulation in java?

1062

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Can one thread block the other thread?

1043

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Explain about instanceof operator in java?

1065

---

Difference between method overloading and method overriding in java ?

1100

---

Explain about main thread in java?

1097

---

What access modifiers can be used for class ?

1037

---

Explain when classnotfoundexception will be raised ?

1056

---

Explain when noclassdeffounderror will be raised ?

1068

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What all methods are used to prevent thread execution ?

1044

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

1193

---

What are packages in java?

1689

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

1026

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

1025

---

Can we override constructors in java?

1157

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