COLOR PALETTE USING JAVA

COLOR PALETTE USING JAVA AIM: To write the java program to create applets incorporating the following features: ALGORITHM: (1)  Step 1: Import all necessary packages and classes. (2)  Step 2: Define a class CPalette that extends Applet and implements the interfaces ActionListener and ItemListener. (3)  Step 3: Define the objects for the controls such as Button, CheckboxGroup, Checkbox and TextArea. (4)  Step 4: Add all the controls by using the init() method of Applet class. (5)  Step 5: Arrange all the controls by using the method setBounds(). (6)  Step 6: Set the background color for each buttons by using the method setBackground(). (7)  Step 7: Make the controls to listen the action by using the method addActionListener(). (8)  Step 8: Make the frame visible by using the method setVisible(). (9)  Step 9:If the item state value s=1, change the background of the control TextArea. (10 Step 10:If the item state value s=2, change the foreground of the control TextArea. (11 Step 11:Create the <applet> code and save it as “ColorPalette.html” Step 12: Run the HTML file (ColorPalette.html) in Internet Explorer. PROGRAM: CPalette.java import java.applet.*; import java.awt.*; import java.awt.event.*; public class CPalette extends Applet implements ActionListener,ItemListener {  Button b1,b2,b3,b4;  CheckboxGroup cg;  Checkbox c1,c2;  TextArea ta;  int s;  public void init()  {   setLayout(null);   b1=new Button();   add(b1);   b1.setBounds(50,50,50,25);   b1.addActionListener(this);   b1.setBackground(Color.blue);   b2=new Button();   add(b2);   b2.setBounds(120,50,50,25);   b2.addActionListener(this);   b2.setBackground(Color.black);   b3=new Button();   add(b3);   b3.setBounds(50,95,50,25);   b3.addActionListener(this);   b3.setBackground(Color.red);   b4=new Button();   add(b4);   b4.setBounds(120,95,50,25);   b4.addActionListener(this);   b4.setBackground(Color.cyan);   cg=new CheckboxGroup();   c1=new Checkbox("Background",cg,false);   add(c1);   c1.setBounds(50,200,100,25);   c1.addItemListener(this);   c2=new Checkbox("Foreground",cg,false);   add(c2);   c2.setBounds(50,250,100,25);   c2.addItemListener(this);   ta=new TextArea();   add(ta);   ta.setBounds(150,150,120,120);   setVisible(true);  }  public void itemStateChanged(ItemEvent ie)  {   if(c1.getState()==true)   s=1;   if(c2.getState()==true)   s=2;  }  public void actionPerformed(ActionEvent ae)  {   if(s==1)   {    if(ae.getSource()==b1)    ta.setBackground(Color.blue);    else if(ae.getSource()==b2)    ta.setBackground(Color.black);    else if(ae.getSource()==b3)    ta.setBackground(Color.red);    else    ta.setBackground(Color.cyan);   }   if(s==2)   {    if(ae.getSource()==b1)    ta.setForeground(Color.blue);    else if(ae.getSource()==b2)    ta.setForeground(Color.black);    else if(ae.getSource()==b3)    ta.setForeground(Color.red);    else    ta.setForeground(Color.cyan);   }  } } ColorPalette.html <html> <head> <title>Color Palette Demonstration</title> </head> <body bgcolor="lightblue"> <applet code="CPalette.class" width="300" height="400"> </applet> </body> </html> RESULT: Thus the java program to create applets is written and the output is verified.