Please see the code
import java.awt.*; // Defines basic classes for GUI programming.
import java.awt.event.*; // Defines classes for working with events.
import java.applet.*; // Defines the applet class.
public class ColoredHelloWorldApplet
extends Applet implements ActionListener {
// Defines a subclass of Applet. The "implements ActionListener"
// part says that objects of type ColoredHelloApplet are
// capable of listening for ActionEvents. This is necessary
// if the applet is to respond to events from the button.
Font textFont; // The font in which the message is displayed.
// A font object represent a certain size and
// style of text drawn on the screen.
TextField T1;
TextField T2;
TextField T3;
int redColor, greenColor, blueColor;
String as, ag, ab;
Button bttn;
public void init() {
// This routine is called by the system to initialize
// the applet. It sets up the font and initial colors
// the applet. It adds a button to the applet for
// changing the message color.
setBackground(Color.lightGray);
// The applet is filled with the background color before
// the paint method is called. The button and the message
// in this applet will appear on a light gray background.
redColor=0;
greenColor=0;
blueColor=0;
textFont = new Font("Serif",Font.BOLD,24);
// Create a font object representing a big, bold font.
/*
TextField T1=new TextField("",12);
TextField T2=new TextField("",12);
TextField T3=new TextField("",12);
*/
T1=new TextField("",12);
T2=new TextField("",12);
T3=new TextField("",12);
add(T1);
add(T2);
add(T3);
bttn = new Button("Change Color");
// Create a new button. "ChangeColor" is the text
// displayed on the button.
bttn.addActionListener(this);
// Set up bttn to send an "action event" to this applet
// when the user clicks the button. The parameter, this,
// is a name for the applet object that we are creating.
add(bttn); // Add the button to the applet, so that it
// will appear on the screen.
} // end init()
public void paint(Graphics g) {
// This routine is called by the system whenever the content
// of the applet needs to be drawn or redrawn. It displays
// the message "Hello World" in the proper color and font.
Color mixColor=new Color(redColor, greenColor,blueColor);
//Color mixColor=new Color(255,255,50);
//g.setColor(mixColor);
g.setColor(mixColor);
//g.setColor(new Color(redColor, greenColor, blueColor));
g.setFont(textFont); // Set the font.
g.drawString("This Color changes", 20,70); // Draw the message.
//T1.setText("Is this function reached");
} // end paint()
public void actionPerformed(ActionEvent evt) {
// This routine is called by the system when the user clicks
// on the button. The response is to change the colorNum
// which determines the color of the message, and to call
// repaint() to see that the applet is redrawn with the
// new color.
// T1.setText("23");
if (evt.getSource() == bttn)
{
as=T1.getText();
ag=T2.getText();
ab=T3.getText();
as=as.trim();
ag=ag.trim();
ab=ab.trim();
redColor= Integer.parseInt(as);
greenColor= Integer.parseInt(ag);
blueColor= Integer.parseInt(ab);
repaint(); // Tell system that this applet needs to be redrawn
}
} // end init()
} // end class ColoredHelloWorldAppletI tested everything
redColor, greenColor,blueColor are getting the values
The only problem with teh code is in these lines
Color mixColor=new Color(redColor, greenColor,blueColor);
//Color mixColor=new Color(255,255,50);
//g.setColor(mixColor);
g.setColor(mixColor);
Can anyone help please?