Answer Posted / vikrant sharma

i agree with above answer given by Ramakrishana,but c++
also used premitive data types then why c++ is called
puerly object oriented...???????

if anyone is able to give answer, please share your answer
about concept that why java is not purely object oriented
language..????????

or mail me about this answer
E mail-just.vikrant@yahoo.co.in

What are the legal operands of the instanceof operator?

1038

---

Why does it take so much time to access an applet having swing components the first time?

1939

---

What are the differences between this and super keyword?

957

---

What is constructor chaining in java?

1072

---

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

1101

---

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

1021

---

What is space character in java?

1120

---

3.2 Consider the following class: public class Point { protected int x, y; public Point(int xx, int yy) { x = xx; y = yy; } public Point() { this(0, 0); } public int getx() { return x; } public int gety() { return y; } public String toString() { return "("+x+", "+y+")"; } } Say you wanted to define a rectangle class that stored its top left corner and its height and width as fields. 3.2.1 Why would it be wrong to make Rectangle inherit from Point (where in fact it would inherit the x and y coordinates for its top left corner and you could just add the height and width as additional fields)? (1) 8 Now consider the following skeleton of the Rectangle class: public class Rectangle { private Point topLeft; private int height, width; public Rectangle(Point tl, int h, int w) { topLeft = tl; height = h; width = w; } public Rectangle() { this(new Point(), 0, 0); } // methods come here } 3.2.2 Explain the no-argument constructor of the Rectangle class given above. 3.2.3 Write methods for the Rectangle class to do the following: • a toString() method that returns a string of the format "top left = (x, y); height = h; width = w " where x, y, h and w are the appropriate integer values. • an above() method that tests whether one rectangle is completely above another (i.e. all y values of the one rectangle are greater than all y values of the other). For example, with the following declarations Rectangle r1 = new Rectangle(); Rectangle r2 = new Rectangle(new Point(2,2), 1, 4); the expression r2.above(r1) should give true, and r2.above (r2) should give false. (You can assume that the height of a rectangle is never negative.) (2) (5)

2984

---

What is the public field modifier?

1040

---

What does the “static” keyword mean?

1115

---

What is string in java is it a data type?

1026

---

What is Gang of four design patterns

1068

---

Is set sorted in java?

939

---

What is the base class of all exception classes?

1079

---

What is 32 bit float?

1005

---