Answer / ranjani

By using JSP forward attriputes within the html tag we can
just forward our page to servlet.or by using
response.sendRedirect()method we can call servlet page.
for example
-----------
<jsp:forward page="/relativepath/YourServlet" /> or
response.sendRedirect("http://path/YourServlet").

We can also pass the parameters in the same way to the
servlet
for example
-----------
<jsp:forward page=/relativepath/YourServlet>
<jsp:param name="name1" value="value1" />
<jsp:param name="name2" value="value2" />
</jsp:forward>
You may also pass parameters to your servlet by specifying
response.sendRedirect("http://path/YourServlet?
param1=val1").

what is default constructor and parameterised constructor with example?

1 Answers   KPIT,

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what is the use of datasource in core java?

3 Answers   Satyam,

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Why string is not thread safe?

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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)

0 Answers   TCS,

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Howmany number of objects we can store in an ArrayList. Is there any limit?

7 Answers   TCS,

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What are the override methods in Object class?

2 Answers   Tech Mahindra, Wipro,

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What are void methods?

0 Answers  

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How can constructor chaining be done by using the super keyword?

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Inorder to specify a container?s layout, which method is used?

1 Answers  

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How to transfer data from an Applet to Servlet ?

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