Probleme mit Öffnen einer GUI Oberfläche

[Boern]

Hallo,
ich habe eine Oberfläche programmiert und möchte sie einfach nur öffnen (mit Umschalt+F6).
Ich weiß nicht wo der Fehler ist.
Vielen Dank im Vorraus.
Gruß Boern

/*Oberfläche vom Messwert
 */

package test;

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



public class Messwert extends javax.swing.JPanel {
    
    
    
    public Messwert() {
        
        initComponents();
        System.out.println("gdgdfg");
        
        //  setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
    }
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc=" Generated Code ">                          
    private void initComponents() {
        jPanel1 = new javax.swing.JPanel();
        P_Sued = new javax.swing.JPanel();
        L_Wert = new javax.swing.JLabel();
        P_Messwert_oben = new javax.swing.JPanel();
        L_Messwert = new javax.swing.JLabel();
        P_Center = new javax.swing.JPanel();
        L_Steuergeraet = new javax.swing.JLabel();
        L_Steuergeraet_Nummer = new javax.swing.JLabel();

        setBackground(new java.awt.Color(204, 204, 204));
        jPanel1.setLayout(new java.awt.BorderLayout());

        P_Sued.setBorder(javax.swing.BorderFactory.createEmptyBorder(1, 1, 1, 1));
        L_Wert.setFont(new java.awt.Font("Tahoma", 0, 24));
        L_Wert.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        L_Wert.setText("0");

        org.jdesktop.layout.GroupLayout P_SuedLayout = new org.jdesktop.layout.GroupLayout(P_Sued);
        P_Sued.setLayout(P_SuedLayout);
        P_SuedLayout.setHorizontalGroup(
            P_SuedLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(P_SuedLayout.createSequentialGroup()
                .add(229, 229, 229)
                .add(L_Wert)
                .addContainerGap(270, Short.MAX_VALUE))
        );
        P_SuedLayout.setVerticalGroup(
            P_SuedLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(P_SuedLayout.createSequentialGroup()
                .add(45, 45, 45)
                .add(L_Wert)
                .addContainerGap(54, Short.MAX_VALUE))
        );

        P_Messwert_oben.setBackground(new java.awt.Color(255, 255, 255));
        P_Messwert_oben.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
        L_Messwert.setFont(new java.awt.Font("Tahoma", 0, 24));
        L_Messwert.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        L_Messwert.setText("Messwert");

        org.jdesktop.layout.GroupLayout P_Messwert_obenLayout = new org.jdesktop.layout.GroupLayout(P_Messwert_oben);
        P_Messwert_oben.setLayout(P_Messwert_obenLayout);
        P_Messwert_obenLayout.setHorizontalGroup(
            P_Messwert_obenLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(P_Messwert_obenLayout.createSequentialGroup()
                .add(189, 189, 189)
                .add(L_Messwert)
                .addContainerGap(221, Short.MAX_VALUE))
        );
        P_Messwert_obenLayout.setVerticalGroup(
            P_Messwert_obenLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(P_Messwert_obenLayout.createSequentialGroup()
                .add(24, 24, 24)
                .add(L_Messwert)
                .addContainerGap(27, Short.MAX_VALUE))
        );

        L_Steuergeraet.setBackground(new java.awt.Color(255, 255, 255));
        L_Steuergeraet.setFont(new java.awt.Font("Tahoma", 0, 24));
        L_Steuergeraet.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);
        L_Steuergeraet.setText("Steuerger\u00e4t: ");

        L_Steuergeraet_Nummer.setBackground(new java.awt.Color(255, 255, 255));
        L_Steuergeraet_Nummer.setFont(new java.awt.Font("Tahoma", 0, 24));
        L_Steuergeraet_Nummer.setText("0");

        org.jdesktop.layout.GroupLayout P_CenterLayout = new org.jdesktop.layout.GroupLayout(P_Center);
        P_Center.setLayout(P_CenterLayout);
        P_CenterLayout.setHorizontalGroup(
            P_CenterLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(P_CenterLayout.createSequentialGroup()
                .add(144, 144, 144)
                .add(L_Steuergeraet)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(L_Steuergeraet_Nummer)
                .addContainerGap(210, Short.MAX_VALUE))
        );
        P_CenterLayout.setVerticalGroup(
            P_CenterLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(P_CenterLayout.createSequentialGroup()
                .add(35, 35, 35)
                .add(P_CenterLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(L_Steuergeraet)
                    .add(L_Steuergeraet_Nummer))
                .addContainerGap(41, Short.MAX_VALUE))
        );

        org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(this);
        this.setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .add(406, 406, 406)
                .add(jPanel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addContainerGap(108, Short.MAX_VALUE))
            .add(org.jdesktop.layout.GroupLayout.TRAILING, P_Messwert_oben, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
            .add(org.jdesktop.layout.GroupLayout.TRAILING, P_Sued, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
            .add(P_Center, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                    .add(layout.createSequentialGroup()
                        .add(56, 56, 56)
                        .add(jPanel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                    .add(P_Messwert_oben, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(P_Center, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
                .add(P_Sued, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
        );
    }// </editor-fold>                        
    
    public static void main(String[] args) {
        
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new Messwert().setVisible(true);
            }
        });
    }
    
    // Variables declaration - do not modify                     
    private javax.swing.JLabel L_Messwert;
    private javax.swing.JLabel L_Steuergeraet;
    private javax.swing.JLabel L_Steuergeraet_Nummer;
    private javax.swing.JLabel L_Wert;
    private javax.swing.JPanel P_Center;
    private javax.swing.JPanel P_Messwert_oben;
    private javax.swing.JPanel P_Sued;
    private javax.swing.JPanel jPanel1;
    // End of variables declaration                   
    
}

 

[L-ectron-X]

Du erbst von JPanel. Um dein GUI anzuzeigen muss es von einem von Window abgeleiteten Container erben und dein JPanel hinzugefügt bekommen.
Kurz: Lass deine Klasse z.B. von JFrame erben und füge diesem dann dein Panel hinzu.

 

[Boern]

Hi L-ectron-X,
Danke für die Hilfe.
Hat funktioniert.
Ciao Boern.