Get Applet parameter Example

1. /*
2. Get Applet parameter Example
3. This java example shows how get the parameter passed to an applet using
4. getParameter() method of Java Applet class.
5. */
6.  
7. import java.applet.Applet;
8. import java.awt.Graphics;
9.  
10. /*
11.  * To pass a parameter to an Applet use <param> HTML tag.
12.  * Specify name and value attribute to pass a parameter to an applet like
13.  * given below.
14.  *
15.  * <param name="paramName" value="paramValue"/>
16.  *
17.  * You can pass multiple parameters for an Applet using multiple
18.  * <param> HTML tag.
19.  */
20.  
21. /*
22. <applet code="GetAppletParameterExample" width=200 height=200>
23. <param name="msg" value="This is a parameter example program"/>
24. <param name="xPosition" value="50"/>
25. <param name="yPosition" value="50"/>
26. </applet>
27. */
28.  
29. public class GetAppletParameterExample extends Applet{
30.  
31. public void paint(Graphics g){
32.  
33. int x = 0;
34. int y = 0;
35. String msg = "";
36.  
37. try{
38. x = Integer.parseInt(getParameter("xPosition"));
39. }
40. catch(NumberFormatException ne){
41. msg = msg + "Invalid x Value";
42. }
43.  
44. try{
45. y = Integer.parseInt(getParameter("yPosition"));
46. }
47. catch(NumberFormatException ne){
48. msg = msg + "Invalid y Value";
49. }
50.  
51. msg = getParameter("msg");
52.  
53. g.drawString(msg, x, y);
54. }
55. }