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    How Make Simple Color Generator using java

    07:19
    This is simple color generator which generate color using combination of red,green,blue. it is made by using awt package.




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    import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.Frame;
import java.awt.GridLayout;
import java.awt.Label;
import java.awt.Panel;
import java.awt.Rectangle;
import java.awt.Scrollbar;
import java.awt.TextField;
import java.awt.Window;
import java.awt.event.AdjustmentEvent;
import java.awt.event.AdjustmentListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

class ColourGenerate extends WindowAdapter  implements AdjustmentListener
{
 private Frame f;
 private Label l1,l2,l3,l4;
 private TextField t1,t2,t3;
 private Scrollbar sb,sb1,sb2;
 private Panel p1,p2,p3,p4;

 ColourGenerate()
 {

  f=new Frame();
  f.setTitle("COLOUR MIXER");
  Rectangle r=new Rectangle();
  r.width=400;
  r.height=400;
  r.x=100;
  r.y=200;
  f.setBounds(r);
  Rectangle r1;
  r1=f.getBounds();
  f.setEnabled(true);
  Color c1;
  c1=f.getBackground();
  l1=new Label("RED");
  l2=new Label("GREEN");
  l3=new Label("BLUE");
  l4=new Label("R  G  B");
  Font fr;
  fr=new Font("corrier New",Font.BOLD,20);
  l1.setFont(fr);
  l2.setFont(fr);
  l3.setFont(fr);
  l4.setFont(fr);
  sb=new Scrollbar();
  sb.setOrientation(Scrollbar.VERTICAL);
  sb.setValue(0);
  sb.setVisibleAmount(0);
  sb.setMinimum(0);
  sb.setMaximum(255);
  sb.setUnitIncrement(1);
  sb.setBlockIncrement(20);
  sb1=new Scrollbar(Scrollbar.VERTICAL,0,1,0,255); 
  sb2=new Scrollbar(Scrollbar.VERTICAL,0,1,0,255); 
  t1=new TextField("0");
  t2=new TextField("0");
  t3=new TextField("0");
  p4=new Panel();
  p2=new Panel();
  p3=new Panel();
  p1=new Panel();
  p4.setLayout(new GridLayout(1,3,10,10));
  p4.add(sb);
  p4.add(sb1);
  p4.add(sb2);
  p2.setLayout(new BorderLayout());
  p2.add(l4,"North");
  p2.add(p4,"Center");
  p1.setLayout(new FlowLayout(FlowLayout.CENTER,10,10));
  p1.add(l1);
  p1.add(t1);
  p1.add(l2);
  p1.add(t2);
  p1.add(l3);
  p1.add(t3);
  p3.setBackground(Color.white);
  f.setLayout(new BorderLayout(5,5));
  f.add(p1,"South");
  f.add(p2,"East");
  f.add(p3,"Center");
  f.setVisible(true);
  sb.addAdjustmentListener(this);
  sb1.addAdjustmentListener(this);
  sb2.addAdjustmentListener(this);
  f.addWindowListener(this);
 }
 
 public static void main(String args[])
 {
  new ColourGenerate();
 }
 
 public void adjustmentValueChanged(AdjustmentEvent e)
 { 
  Object o;
  o=e.getSource();
  if(o==sb)
  {
   int v1,v2,v3;
   v1=sb.getValue();
   t1.setText(""+v1);
   v2=sb1.getValue();
   v3=sb2.getValue();
   Color c1=new Color(v1,v2,v3);
   p3.setBackground(c1);
  }
  else if(o==sb1)
  {
   int v2;
   v2=sb1.getValue();
   t2.setText(""+v2);
   Color c2=new Color(sb.getValue(),v2,sb2.getValue());
   p3.setBackground(c2);
  }
  else if(o==sb2)
  {
   t3.setText(""+sb2.getValue());
   Color c3=new Color(sb.getValue(),sb1.getValue(),sb2.getValue());
   p3.setBackground(c3);
  }
 }
 
 public void windowClosing(WindowEvent e1)
 {
  Window w;
  w=e1.getWindow();
  w.setVisible(false);
  w.dispose();
  System.exit(1);
 }
}
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