Kan afvikle i appletviewer

Halløj

Jeg kan afvikle min nyskrevne applet i vieweren.

Jeg bruger kommandoen:
appletviewer pension.class

Koden er:

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class Pension extends JApplet {
    Container beholder;
   
    JLabel L1, L2, L3, L4, L5, L6, L7;
    JTextField T1, T2, T3, T4, T5, T6;
    JButton K1, K2;
    Box B1, B2, B3, B4, B5, B6;
   
    public void init() {
   
    beholder = getContentPane();
    Box B1 = Box.createVerticalBox();
    beholder.add(B1);
    Box B2 = Box.createHorizontalBox();
    B1.add(B2);
    Box B3 = Box.createVerticalBox();
    B2.add(B3);
    L1=new JLabel("Ønsket betaling");
    B3.add(L1);
    L2=new JLabel("Alder");
    B3.add(L2);
    L3=new JLabel("Forv. obligationsrente % p.a.");
    B3.add(L3);
    L4=new JLabel("Positiv/negativ kapitalindkomst");
    B3.add(L4);
    L5=new JLabel("Kommuneskat");
    B3.add(L5);
    Box B4 = Box.createVerticalBox();
    B2.add(B4);
    T1=new JTextField();
    B4.add(T1);
    T2=new JTextField();
    B4.add(T2);
    T3=new JTextField();
    B4.add(T3);
    T4=new JTextField();
    B4.add(T4);
    T5=new JTextField();
    B4.add(T5);
    B4.createHorizontalStrut(30);
    Box B5 = Box.createHorizontalBox();
    B1.add(B5);
    K1=new JButton(" Beregn ");
    B4.add(K1);
    K2=new JButton(" Reset ");
    B4.add(K2);
    Box B6 = Box.createHorizontalBox();
    B1.add(B6);
    L6=new JLabel("Resultat");
    B1.add(L6);
    K1.addActionListener(new Request());
}


class Request implements ActionListener {
public void actionPerformed(ActionEvent ae) {
double k=0; double r=0; double n=0; double m=0; double p=0; double q=0;

    try { Double dobj = Konverter.danskStringTilDouble(T1.getText());

    k=dobj.doubleValue();
        }
        catch (NumberFormatException ee) { T1.setText("numerisk, tak"); }
       
    try { Double dobj = Konverter.danskStringTilDouble(T2.getText());
    r=dobj.doubleValue();
        }
        catch (NumberFormatException ee) { T2.setText("numerisk, tak"); }

    try { Double dobj = Konverter.danskStringTilDouble(T3.getText());
    n=dobj.doubleValue();
        }
        catch (NumberFormatException ee) { T3.setText("numerisk, tak"); }

    try { Double dobj = Konverter.danskStringTilDouble(T4.getText());
    m=dobj.doubleValue();
        }
        catch (NumberFormatException ee) { T4.setText("numerisk, tak"); }

    try { Double dobj = Konverter.danskStringTilDouble(T5.getText());
    p=dobj.doubleValue();
        }
        catch (NumberFormatException ee) { T5.setText("numerisk, tak"); }
   

L6.setText ("Kr.: " +String.valueOf(Pensionsfunktion.beregnFremtidsVaerdi(k, r, n, m, p)));
}
}
}

Fejlen er noget med: "Warning: No applets were started. Make sure the input contains an <applet> tag.