Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / shivaprasad
Exceptions are those which can be handled at the run time
where as errors cannot be handled.
Examples for exceptions: Array out of bonds, attempt to
divide by zero etc.
Exceptions can be handled by handlers using try - catch.
| Is This Answer Correct ? | 279 Yes | 48 No |
Post New Answer View All Answers
What is the range of a character variable?
Tell me how many ways are there to initialise an integer with a constant.
What is passed by reference and pass by value ?
Are there structures in java?
How do I stop concurrentmodificationexception?
What is finally and finalize in java?
What is balanced tree in java?
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)
What is the difference between scrollbar and scrollpane?
Explain OOPs concept.
Can we pass a primitive type by reference in java? How
explain what is transient variable in java?
Can java hashmap have duplicate keys?
What is difference between adapter class and listener?
What is a private class in java?
