In the first round, there are 30 aptitude and 30 java
questions. We are suppose to finish both the papers within
60 minutes.
I cleared this round.
Next was test for programming skills.
In this section, Some 7 n's were asked.
1.
What is the difference b/w sleep(1000) and wait(1000)
2.
what is the diff b/w static block and static function?
3.
Write a program to validate IP address using string
tokenizer.
4.
Write a program to create singleton class
5.
write a function to reverse the string
6.
Write a prog to print prime nos upto n. EX: If n=9, It shld
print 1,2,3,5,7
7. One program on collections- Write a program to print no.
of times a number is repeating in an array.
EX- {1,3,1,2,5,7,3,7,34,3,8,3}
It should print: 1- 2 times
3- 4 times and so on
7. Write a func to print fibonocci series
After this I had technical interview, which went on for.
60 mins or so. There were qn's about multi threading,
Exception handling and collection classes.
Knowledge about collections was very important for the
post I was interviewed for.
Howto get an object that will perform date & time calculations
then format it for output in some different locales with
different date style.can ne1 tel me the answer of this
question.pls
47
what is the use of bean managed and container managed with
example?
There is a Banking application. It has 2 types of account,
Savings and Current. Write a method calculateInterest by
passing an ArrayList of these account objects and calculate
Interest accordingly. Write code for this situation
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)
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