JApplet help please cant find symbol even imported or extends
here is my code
import java.util.Arrays;
import java.applet.Applet;
import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import se.datadosen.component.RiverLayout; <-- dont mindthis
publicclass appletguiextends JApplet
{
publicvoid init()
{
JButton clearbtn1 =new JButton("Clear");
JButton clearbtn2 =new JButton("Clear");
JButton clearbtn3 =new JButton("Clear");
final JTextField txtoddeven =new JTextField(5);
final JTextField txtcelcius =new JTextField(5);
final JTextField txtkelvin =new JTextField(5);
final JTextField txtsort1 =new JTextField(5);
final JTextArea txtsort2 =new JTextArea();
txtsort2.setEditable(false);
final JApplet window2 =new JApplet("Odd and Even");
final JApplet window3 =new JApplet("Farenheight to Celcius");
final JApplet window4 =new JApplet("Kelvin to Celcius");
final JApplet window5 =new JApplet("Array Sorting");
final JRadioButton oddeven =new JRadioButton("Odd and Even");
final JRadioButton celcius =new JRadioButton("Farenheight to Celcius");
final JRadioButton kelvin =new JRadioButton("Kelvin to Celcius");
final JRadioButton sort =new JRadioButton("Array sorting");
final JApplet window1 =new JApplet("Java");
Container content1 = window1.getContentPane();
content1.setLayout(new RiverLayout());
//window1.setResizable(false);
//window1.setDefaultCloseOperation(JApplet.EXIT_ON_CLOSE);
//window1.setLocationRelativeTo(null);
ButtonGroup group =new ButtonGroup();
group.add(oddeven);
group.add(celcius);
group.add(kelvin);
group.add(sort);
JButton ok =new JButton("Ok");
content1.add("p left", oddeven);
content1.add("tab", celcius);
content1.add("br", kelvin);
content1.add("tab", sort);
content1.add("br center",ok);
//window1.pack();
//window1.setVisible(true);
ok.addActionListener(new ActionListener()
{
publicvoid actionPerformed(ActionEvent e)
{
try
{
int hello, y;
boolean x;
x = oddeven.isSelected();
if(x ==false)
{
y = 0;
}
else
{
y = 1;
}
for(hello = 0; hello < y; hello++)
{
window2.setVisible(true);
window1.setVisible(false);
}
}
catch(Exception ex)
{
JOptionPane.showMessageDialog(null,"Invalid");
}
}
});
ok.addActionListener(new ActionListener()
{
publicvoid actionPerformed(ActionEvent e)
{
try
{
int hello, y;
boolean x;
x = celcius.isSelected();
if(x ==false)
{
y = 0;
}
else
{
y = 1;
}
for(hello = 0; hello < y; hello++)
{
window3.setVisible(true);
window1.setVisible(false);
}
}
catch(Exception ex)
{
JOptionPane.showMessageDialog(null,"Invalid");
}
}
});
ok.addActionListener(new ActionListener()
{
publicvoid actionPerformed(ActionEvent e)
{
try
{
int hello, y;
boolean x;
x = kelvin.isSelected();
if(x ==false)
{
y = 0;
}
else
{
y = 1;
}
for(hello = 0; hello < y; hello++)
{
window4.setVisible(true);
window1.setVisible(false);
}
}
catch(Exception ex)
{
JOptionPane.showMessageDialog(null,"Invalid");
}
}
});
ok.addActionListener(new ActionListener()
{
publicvoid actionPerformed(ActionEvent e)
{
try
{
int hello, y;
boolean x;
x = sort.isSelected();
if(x ==false)
{
y = 0;
}
else
{
y = 1;
}
for(hello = 0; hello < y; hello++)
{
window5.setVisible(true);
window1.setVisible(false);
}
}
catch(Exception ex)
{
JOptionPane.showMessageDialog(null,"Invalid");
}
}
});
Container content2 = window2.getContentPane();
content2.setLayout(new RiverLayout());
//window2.addWindowListener(new WindowAdapter()
//{
// public void windowClosing(WindowEvent e)
// {
//window1.setVisible(true);
//window2.setDefaultCloseOperation(window2.DISPOSE_ON_CLOSE);
// }
//});
//window2.setResizable(false);
//window2.setLocationRelativeTo(null);
JLabel lbloddeven =new JLabel("Enter a number");
JButton oddevenbtn =new JButton("Odd or Even");
content2.add("p left", lbloddeven);
content2.add("tab", txtoddeven);
content2.add("br", oddevenbtn);
content2.add("", clearbtn1);
//window2.pack();
oddevenbtn.addActionListener(new ActionListener()
{
publicvoid actionPerformed(ActionEvent e)
{
try
{
int x;
x=Integer.parseInt(txtoddeven.getText());
if(x%2==0)
{
JOptionPane.showMessageDialog(null, x +" Is even number");
}
else
{
JOptionPane.showMessageDialog(null, x +" Is odd number");
}
}
catch(Exception ex)
{
JOptionPane.showMessageDialog(null,"Invalid Input");
}
}
});
clearbtn1.addActionListener(new ActionListener()
{
publicvoid actionPerformed(ActionEvent e)
{
txtoddeven.setText("");
}
});
Container content3 = window3.getContentPane();
content3.setLayout(new RiverLayout());
//window3.setResizable(false);
//window3.addWindowListener(new WindowAdapter()
//{
//public void windowClosing(WindowEvent e)
//{
//window3.setDefaultCloseOperation(window3.DISPOSE_ON_CLOSE);
//window1.setVisible(true);
//}
//});
//window3.setLocationRelativeTo(null);
JLabel lblcelcius =new JLabel("Enter a number to convert");
JButton celciusbtn =new JButton("Convert to celcius");
JButton farenheightbtn =new JButton("Convert to farenheight");
content3.add("p left", lblcelcius);
content3.add("tab", txtcelcius);
content3.add("br", celciusbtn);
content3.add("", farenheightbtn);
content3.add("", clearbtn2);
//window3.pack(); // window pack
celciusbtn.addActionListener(new ActionListener()
{
publicvoid actionPerformed(ActionEvent e)
{
try
{
double f, c;
f = Double.parseDouble(txtcelcius.getText());
c = 5.0/9.0*f-32;
JOptionPane.showMessageDialog(null, c);
}
catch(Exception ex)
{
JOptionPane.showMessageDialog(null,"Invalid Input");
}
}
});
farenheightbtn.addActionListener(new ActionListener()// this is the action if the user click the button it will generate the output
{
publicvoid actionPerformed(ActionEvent e)
{
try
{
double f, c;
c = Double.parseDouble(txtcelcius.getText());
f = 9.0/5.0*c+32;
JOptionPane.showMessageDialog(null, f);
}
catch(Exception ex)
{
JOptionPane.showMessageDialog(null,"Invalid Input");
}
}
});
clearbtn2.addActionListener(new ActionListener()//clear the textfields
{
publicvoid actionPerformed(ActionEvent e)//event to execute the action required
{
txtcelcius.setText("");
}
});
Container content4 = window4.getContentPane();//putting the contents to the JApplet
content4.setLayout(new RiverLayout());
//window4.setResizable(false);
//window4.addWindowListener(new WindowAdapter() // closing operation should import java.awt.event.*; to work
//{
//public void windowClosing(WindowEvent e)
//{
//window4.setDefaultCloseOperation(window4.DISPOSE_ON_CLOSE);
//window1.setVisible(true);
//}
//});
//window4.setLocationRelativeTo(null); // putting the JApplet window in Center
JLabel lblkelvin =new JLabel("Enter a number to convert");
JButton kelvinbtn1 =new JButton("Convert kelvin to Celcius");
JButton kelvinbtn2 =new JButton("Convert Celcius to Kelvin");
// contents of the window frame
content4.add("p left", lblkelvin);
content4.add("tab", txtkelvin);
content4.add("br", kelvinbtn1);
content4.add("", kelvinbtn2);
content4.add("", clearbtn3);
//window4.pack();
kelvinbtn1.addActionListener(new ActionListener()// this is the action if the user click the button it will generate the output
{
publicvoid actionPerformed(ActionEvent e)
{
try
{
double k, c;
c = Double.parseDouble(txtkelvin.getText());
k = c+273;
JOptionPane.showMessageDialog(null, k);
}
catch(Exception ex)
{
JOptionPane.showMessageDialog(null,"Invalid Input");// this messagebox will pop-up if there's a invalid input by the user
}
}
});
kelvinbtn2.addActionListener(new ActionListener()
{
publicvoid actionPerformed(ActionEvent e)
{
try
{
double k, c;
k = Double.parseDouble(txtkelvin.getText());
c = k-273;
JOptionPane.showMessageDialog(null, c);
}
catch(Exception ex)
{
JOptionPane.showMessageDialog(null,"Invalid Input");// this messagebox will pop-up if there's a invalid input by the user
}
}
});
clearbtn3.addActionListener(new ActionListener()
{
publicvoid actionPerformed(ActionEvent e)
{
txtkelvin.setText("");
}
});
Container content5 = window5.getContentPane();
content5.setLayout(new RiverLayout());
//window5.setSize(200,150);
//window5.setResizable(false);
//window5.addWindowListener(new WindowAdapter()
//{
//public void windowClosing(WindowEvent e)
///{
//window5.setDefaultCloseOperation(window5.DISPOSE_ON_CLOSE);
//window1.setVisible(true);
//}
//});
//window5.setLocationRelativeTo(null);
JLabel lblsort1 =new JLabel("Sorted strings");
JButton sortbtn =new JButton("Click here to enter a string to sort");
content5.add("p left", lblsort1);
content5.add("tab hfill", txtsort2);
content5.add("br", sortbtn);
//window5.pack();
sortbtn.addActionListener(new ActionListener()
{
publicvoid actionPerformed(ActionEvent e)
{
try// catching errors
{
int x, y;
String name[] =new String[3];
txtsort2.setText("");
for(x = 0; x < 3; x++)
{
name[x]=JOptionPane.showInputDialog(null,"Enter a String");
}
Arrays.sort(name);
for(y = 0; y < 3; y++)
{
txtsort2.append("," + name[y]);
}
}
catch(Exception ex)// catching errors
{
JOptionPane.showMessageDialog(null,"Invalid");// this messagebox will pop-up if there's a invalid input by the user
}
}
});
//public void start()
//{
//System.out.print("Starting");
//}
}
}
here is the error of my code
C:\Program Files\Java\jdk1.6.0_01\bin\MyProjects\appletgui.java:24: cannot find symbol
symbol : constructor JApplet(java.lang.String)
location:class javax.swing.JApplet
final JApplet window2 =new JApplet("Odd and Even");
^
C:\Program Files\Java\jdk1.6.0_01\bin\MyProjects\appletgui.java:25: cannot find symbol
symbol : constructor JApplet(java.lang.String)
location:class javax.swing.JApplet
final JApplet window3 =new JApplet("Farenheight to Celcius");
^
C:\Program Files\Java\jdk1.6.0_01\bin\MyProjects\appletgui.java:26: cannot find symbol
symbol : constructor JApplet(java.lang.String)
location:class javax.swing.JApplet
final JApplet window4 =new JApplet("Kelvin to Celcius");
^
C:\Program Files\Java\jdk1.6.0_01\bin\MyProjects\appletgui.java:27: cannot find symbol
symbol : constructor JApplet(java.lang.String)
location:class javax.swing.JApplet
final JApplet window5 =new JApplet("Array Sorting");
^
C:\Program Files\Java\jdk1.6.0_01\bin\MyProjects\appletgui.java:35: cannot find symbol
symbol : constructor JApplet(java.lang.String)
location:class javax.swing.JApplet
final JApplet window1 =new JApplet("Java");
^
5 errors
please help me my head is breaking thank's
