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TCS Core Java Interview Questions
Questions Answers Views Company eMail

What is the difference between overloading and overriding a function?

13 18445

What are Advatages of Overloading and Overridding.

8 22389

Can we declare static variables in JSP page.

3 21384

What is the difference between this() and super()?

15 34452

Why do inner class cannot have static declaration except static nested class?

2 10867

What is the basically use of finally while we know it is always executed but why?

5 6921

Why can't we make jsp as a controller and action servlet in struts?

8 9208

I want to know the host name and provider name for tcs web mail

5 16439

Is java is a fully object object oriented language?

31 25688

printstream class method println() is calling using System class and its static object out .how it is explain any one in detail with example ?

1 4393

How can you sort dates?

2 7630

In Java why we write public static void main(String args[]) why not main()?

46 91182

how to know the total memory occupied by the objects in the ArrayList(Array list may contain duplicate objects)

1648

Write the program numbers into words.For example 2345==two thousand three hundred fourty five

2 7142

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)

1639

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TCS Core Java Interview Questions


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