Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / vikas deshmukh
both inherit from Throwable, some differences are,
Exceptions:
1)It can be checked or unchecked
2)It indicate an error caused by the programmer
3)It Should be handled at the application level
Errors:
1)Errors are always unchecked
2)Usually indicate a system error or a problem with a low-level resource
3)It should be handled at the system level, if possible
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
What is a substitution variable?
What is protected in java?
What is the purpose of void class?
What are assembly attributes?
What is string data?
Explain about anonymous inner classes ?
Can we sort array in java?
What do you mean by light weight and heavy weight components?
What is the role of garbage collector in java?
Is intellij better than eclipse?
What is jvm? Why is java called the platform independent programming language?
Is null == null in java?
Can you explain the final method modifier?
Where are register variables stored?
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)
