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Applet Program with Background and Foreground Checkbox and set background images in Java

  1. Forget Code
  2. Java
  3. Applet Program with Background and Foreground Checkbox and set background images 
  1. import java.awt.*;
  2.  
  3. import java.awt.event.*;
  4.  
  5. import java.applet.*;
  6.  
  7. /*<applet code="exp" width=400 height=400>
  8.  
  9. </applet>*/
  10.  
  11. public class exp extends Applet implements ItemListener
  12.  
  13. {
  14.  
  15. int currcolor=5;
  16.  
  17. int flag=1;
  18.  
  19. String text="Click any of the buttons";
  20.  
  21. Button buttons[]=new Button[5];
  22.  
  23. String colours[]={"Red","Blue","Green","Yellow","Magenta"};
  24.  
  25. Image img;
  26.  
  27. CheckboxGroup cbg=new CheckboxGroup();
  28.  
  29. Checkbox box1=new Checkbox("Background Color",cbg,true);
  30.  
  31. Checkbox box2=new Checkbox("Text Color",cbg,false);
  32.  
  33. Checkbox box3=new Checkbox("Loading Image",cbg,false);
  34.  
  35. public void init()
  36.  
  37. {
  38.  
  39. for(int i=0;i<5;i++)
  40.  
  41. {
  42.  
  43. buttons[i]=new Button(" ");
  44.  
  45. add(buttons[i]);
  46.  
  47. }
  48.  
  49. buttons[0].setBackground(Color.red);
  50.  
  51. buttons[1].setBackground(Color.blue);
  52.  
  53. buttons[2].setBackground(Color.green);
  54.  
  55. buttons[3].setBackground(Color.yellow);
  56.  
  57. buttons[4].setBackground(Color.magenta);
  58.  
  59. add(box1);
  60.  
  61. add(box2);
  62.  
  63. add(box3);
  64.  
  65. box1.addItemListener(this);
  66.  
  67. box2.addItemListener(this);
  68.  
  69. box3.addItemListener(this);
  70.  
  71. }
  72.  
  73. public void itemStateChanged(ItemEvent ev)
  74.  
  75. {
  76.  
  77. if(box1.getState()==true)
  78.  
  79. flag=1;
  80.  
  81. else if(box2.getState()==true)
  82.  
  83. {
  84.  
  85. text="Default color is black";
  86.  
  87. flag=2;
  88.  
  89. }
  90.  
  91. else if(box3.getState()==true)
  92.  
  93. {
  94.  
  95. img=getImage(getDocumentBase(),"Water lilies.jpg");
  96.  
  97. flag=3;
  98.  
  99. }
  100.  
  101. repaint();
  102.  
  103. }
  104.  
  105. public void paint(Graphics g)
  106.  
  107. {
  108.  
  109. if(flag==2)
  110.  
  111. {
  112.  
  113. g.drawString(text,30,100);
  114.  
  115. switch(currcolor)
  116.  
  117. {
  118.  
  119. case 0:
  120.  
  121. g.setColor(Color.red);
  122.  
  123. break;
  124.  
  125. case 1:
  126.  
  127. g.setColor(Color.blue);
  128.  
  129. break;
  130.  
  131. case 2:
  132.  
  133. g.setColor(Color.green);
  134.  
  135. break;
  136.  
  137. case 3:
  138.  
  139. g.setColor(Color.yellow);
  140.  
  141. break;
  142.  
  143. case 4:
  144.  
  145. g.setColor(Color.magenta);
  146.  
  147. break;
  148.  
  149. case 5:
  150.  
  151. g.setColor(Color.black);
  152.  
  153. break;
  154.  
  155. }
  156.  
  157. g.drawString(text,30,100);
  158.  
  159. }
  160.  
  161. else if(flag==1)
  162.  
  163. {
  164.  
  165. g.drawString(text,30,100);
  166.  
  167. switch(currcolor)
  168.  
  169. {
  170.  
  171. case 0:
  172.  
  173. setBackground(Color.red);
  174.  
  175. break;
  176.  
  177. case 1:
  178.  
  179. setBackground(Color.blue);
  180.  
  181. break;
  182.  
  183. case 2:
  184.  
  185. setBackground(Color.green);
  186.  
  187. break;
  188.  
  189. case 3:
  190.  
  191. setBackground(Color.yellow);
  192.  
  193. break;
  194.  
  195. case 4:
  196.  
  197. setBackground(Color.magenta);
  198.  
  199. break;
  200.  
  201. case 5:
  202.  
  203. setBackground(Color.white);
  204.  
  205. break;
  206.  
  207. }
  208.  
  209. }
  210.  
  211. else if(flag==3)
  212.  
  213. {
  214.  
  215. g.drawImage(img,20,90,this);
  216.  
  217. }
  218.  
  219. }
  220.  
  221. public boolean action(Event e,Object o)
  222.  
  223. {
  224.  
  225. for(int i=0;i<5;i++)
  226.  
  227. {
  228.  
  229. if(e.target==buttons[i])
  230.  
  231. {
  232.  
  233. currcolor=i;
  234.  
  235. text="You have chosen "+colours[i];
  236.  
  237. repaint();
  238.  
  239. return true;
  240.  
  241. }
  242.  
  243. }
  244.  
  245. return false;
  246.  
  247. }
  248.  
  249. }
  250.