Answer / Vijyanand Kumar

It's possible to learn the basics of Java in 3 months, but it requires consistent practice and dedication.

What is the difference between final, finally and finalize() in java?

1 Answers  

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Explain which of the following methods releases the lock when yield(), join(),sleep(),wait(),notify(), notifyall() methods are executed?

1 Answers  

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What is the exact difference in between Unicast and Multicast object? Where will it be used?

1 Answers  

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we have a 100 classes at that time which class we have to write main method? pls help me

6 Answers   Wipro,

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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)

1 Answers   TCS,

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What is the effect of keeping a constructor private?

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How many bits are used to represent unicode, ascii, utf-16, and utf-8 characters?

1 Answers  

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What is the difference between applet and application?

1 Answers  

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Does the order of public and static declaration matter in main method?

1 Answers  

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What is the difference amongst jvm spec, jvm implementation, jvm runtime ?

1 Answers  

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What is identifier with example?

1 Answers  

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Discuss about garbage collector in Java.

1 Answers   Agilent, Integreon, ZS Associates,

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