When should we create our own custom exception classes?

961

---

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

857

---

When do I need to use reflection feature in java?

1010

---

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

987

---

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

952

---

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

1051

---

Is finalize() similar to a destructor?

979

---

Explain the difference between protected and default access.

948

---

Explain how to convert any java object into byte array.

926

---

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

911

---

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

916

---

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

1486

---

Describe how to implement singleton design pattern in struts.

950

---

What is a treeset class?

951

---

Can you explain the meaning of aggregation and composition

941

---