When should we create our own custom exception classes?

1058

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Can we pass a primitive type by reference in java? How

982

---

When do I need to use reflection feature in java?

1138

---

Why does java have two ways to create child threads? Which way is better?

1110

---

Why does java have different data types for integers and floating-point values?

1067

---

What is byte code and why is it important to java’s use for internet programming?

1198

---

Is finalize() similar to a destructor?

1078

---

Explain the difference between protected and default access.

1045

---

Explain how to convert any java object into byte array.

1014

---

What is finalize()? Is finalize() similar to a destructor?

1003

---

Explain the use of shift operator in java. Can you give some examples?

1037

---

What is difference between add() and addelement() in vector?

1585

---

Describe how to implement singleton design pattern in struts.

1068

---

What is a treeset class?

1060

---

Can you explain the meaning of aggregation and composition

1067

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