Accenture NJ mostly ask question on Collection like
1)How to sort Objcts and how treeset sort them
2)Explain mechanism of Hashcode finding in Java
3)Name some of the Sorted collection.
My application URL :
http://localhost:8080/Application/Login.jsp. When a user
enter this url in IE then, how it get Login.JSP Page
exactly? what are the processes will happen from when we
submit the URL to get Login.jsp?
I need some details about an employee. i have only the
employee id in my presentation layer(JSP).I entered that ID
and click "Show Details" Button. Question is how the JSP
pass that id to Controller layer and DAO and what mechanism
we are using to retrive data from DB and how the data
passed to JSP as a Output. Please explain in detail.
which is advanced deep technology in java launched by the
sun microsystem??? The answer is very logical
If u need correct answer mail me at priya_gupta@gmail.com
Given:
11. public static void main(String[] args) {
12. Integer i = uew Integer(1) + new Integer(2);
13. switch(i) {
14. case 3: System.out.println(”three”); break;
15. default: System.out.println(”other”); break;
16. }
17. }
‘What is the result?
1 three
2 other
3 An exception is thrown at runtime.
4 Compilation fails because of an error on
line 12.
Given:
1. package test;
2.
3. class Target {
4. public String name = “hello”;
5. }
What can directly access and change the value of the
variable name?
1 any class
2 only the Target class
3 any class in the test package
4 any class that extends Target
84. try {
85. ResourceConnection con =
resourceFactory.getConnection();
86. Results r = con.query(”GET INFO FROM CUSTOMER”);
87. info = r.getData();
88. con.close();
89. } catch (ResourceException re) {
90. errorLog.write(re.getMessage());
91. }
92. return info;
Which is true if a ResourceException is thrown on line 86?
1 Line 92 will not execute.
2 The connection will not be retrieved in line
85.
3 The resource connection will not be closed
on line 88.
4 The enclosing method will throw an exception
to its caller.
11. static class A {
12. void process() throws Exception { throw new Exception();
}
13. }
14. static class B extends A {
15. void process() { System.out.println(”B”); }
16. }
17. public static void main(String[] args) {
18. new B().process();
19. }
What is the result?
1 B
2 The code runs with no output.
3 Compilation fails because of an error in
line 12.
4 Compilation fails because of an error in
line 15.
Given:
10. interface A { void x(); }
11. class B implements A { public void x() { } public
voidy() { } }
12. class C extends B { public void x() {} }
And:
20. java.util.List list = new java.util.ArrayList();
21. list.add(new B());
22. list.add(new C());
23. for (A a:list) {
24. a.x();
25. a.y();;
26. }
What is the result?
1 Compilation fails because of an error in
line 25.
2 The code runs with no output.
3 An exception is thrown at runtime.
4 Compilation fails because of an error in
line 20.
33. try {
34. // some code here
35. } catch (NullPointerException e1) {
36. System.out.print(”a”);
37. } catch (RuntimeException e2) {
38. System.out.print(”b”);
39. } finally {
40. System.out.print(”c”);
41. }
What is the result if a NullPointerException occurs on line
34?
1 c
2 a
3 ab
4 ac
10. class Nav{
11. public enum Direction { NORTH, SOUTH, EAST, WEST }
12. }
13. public class Sprite{
14. // insert code here
15. }
Which code, inserted at line 14, allows the Sprite class to
compile?
a)Direction d = NORTH;
b)Nav.Direction d = NORTH;
c)Direction d = Direction.NORTH;
d)Nav.Direction d = Nav.Direction.NORTH;
os is developed in c no
java is more secured then c na
why dont the os developed is developed using java
655
hi am an engineering student and my next plan is for ms in
either in us or australia i got my passport but i dont know
anything bout visa can u give brief idea
1)How to get prepared for visa and
2)How to apply for top universities and
3)How to pay the fee and so on
These all are basic questions plz give me a clear idea
75
What is the SimpleTimeZone class?
212
What problems will occur when you don?t use layout managers?
178
what is the J2EE BluPrints?
128
What happens to the Exception object after handling an
exception?
For ease of programming you can consider the maze as a 2D
array with colors represented by below integer and
characters (in capital letters).
• B - Black
• W -White
• G- Green
• R- Red
R B W B W W W W
W W
B W B B W W W W
W W
W B W B W W W B
W W
W W B B W W W B
W W
W B W W B B B B
W B
W B W W B W W W
B W
W W B B B W W B
W W
W B W W B W B W
W W
B W B W W W W B
B W
W W W B W W W W
W G
Shortest Route Problem:
• Solution that finds the shortest Route between Red
and Green
 White will have 1 Weight.
 Red and Green carry no weights.
 Shortest path is the path with less weight when you
add up the weights in the path.
86
What are listeners in java and explain ?
191
Q1.A. Write note on “The class path Environment Variable”?
B. Which are different kinds of source code?
Q2.A. How to create an interface?
B. Why convert an applet to an application?
Q3.A. How to use Media tracker Class.
B. How to use string tokenizer class.
Q4 A. Explain the overview of UDP messaging.
B. Difference between SQL Exception class and SQL
Warning class.
Q5. A. How to create com object in Java?
B. Write short notes on “The properties class”
Q6. A. When object is created and destroyed?
B. Explain the JDB in depth & command line.
C. Write short notes on Web Sites.
How to know the host from which Applet is originated?
155
Question 5 [15]
Consider the following classes, illustrating the Strategy
design pattern:
import java.awt.*;
abstract class Text {
protected TextApplet tA;
protected Text(TextApplet tApplet) {
tA = tApplet;
}
abstract public void draw(Graphics g);
}
class PlainText extends Text {
protected PlainText(TextApplet tApplet) {
super(tApplet);
}
public void draw(Graphics g) {
g.setColor(tA.getColor());
g.setFont(new Font("Sans-serif", Font.PLAIN, 12));
g.drawString(tA.getText(), 20, 20);
}
}
class CodeText extends Text {
protected CodeText(TextApplet tApplet) {
super(tApplet);
}
public void draw(Graphics g) {
g.setColor(tA.getColor());
g.setFont(new Font("Monospaced", Font.PLAIN, 12));
g.drawString(tA.getText(), 20, 20);
}
}
public class TextApplet extends java.applet.Applet {
protected Text text;
protected String textVal;
protected Color color;
public String getText() {
return textVal;
}
public Color getColor() {
return color;
}
public void init() {
textVal = getParameter("text");
String textStyle = getParameter("style");
String textColor = getParameter("color");
if (textStyle == "code")
text = new CodeText(this);
else
text = new PlainText(this);
if (textColor == "red")
color = Color.RED;
else if (textColor == "blue")
color = Color.BLUE;
else
color = Color.BLACK;
}
public void paint(Graphics g) {
text.draw(g);
10
}
}
The Text class is more complicated than it should be (there
is too much coupling between the
Text and TextApplet classes). By getting rid of the
reference to a TextApplet object in the
Text class and setting the colour in the paint() method,
one could turn the Text class into an
interface and simplify the strategy classes considerably.
5.1 Rewrite the Text and PlainText classes to do what is
described above. (6)
5.2 Explain the consequent changes that are necessary to
the TextApplet class. (4)
5.3 Write an additional strategy class called FancyText (to
go with your simplified
strategy classes) to allow fancy text to be displayed for
the value "fancy" provided
for the style parameter. It should use the font Font
("Serif", Font.ITALIC, 12).
(3)
5.4 Explain what changes are necessary to the TextApplet
class for this. (2)
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