JPanel wird nicht angezeigt

JPanel wird nicht angezeigt, ich habe .setVisible-Methode.. aber es nicht zeigen, bis Sie weder sich, Es baut, aber es nicht zeigen, bis bin ich nur ein Anfänger in diesem Teil der Programmierung.

    package calculatorv3;


    public class CalculatorForm extends javax.swing.JPanel {
        private static final long serialVersionUID = 1L;


       public CalculatorForm() {
            initComponents();
       }

        /**
         * 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.
         */
        @SuppressWarnings("unchecked")

        private void initComponents() {

            jTextField2 = new javax.swing.JTextField();
            jTextField3 = new javax.swing.JTextField();
            jTextField4 = new javax.swing.JTextField();
            jButton2 = new javax.swing.JButton();
            jButton3 = new javax.swing.JButton();
            jButton4 = new javax.swing.JButton();
            jButton5 = new javax.swing.JButton();
            jButton6 = new javax.swing.JButton();
            jButton7 = new javax.swing.JButton();
            jButton8 = new javax.swing.JButton();
            jButton9 = new javax.swing.JButton();
            jButton10 = new javax.swing.JButton();
            jButton11 = new javax.swing.JButton();
            jButton12 = new javax.swing.JButton();
            jButton13 = new javax.swing.JButton();
            jButton14 = new javax.swing.JButton();
            jButton15 = new javax.swing.JButton();
            jButton1 = new javax.swing.JButton();
            jButton16 = new javax.swing.JButton();
            jButton17 = new javax.swing.JButton();

            jButton2.setText("2");
            jButton2.addActionListener(new java.awt.event.ActionListener() {
                public void actionPerformed(java.awt.event.ActionEvent evt) {
                    jButton2ActionPerformed(evt);
                }
            });

            jButton3.setText("1");
            jButton3.addActionListener(new java.awt.event.ActionListener() {
                public void actionPerformed(java.awt.event.ActionEvent evt) {
                    jButton3ActionPerformed(evt);
                }
            });

            jButton4.setText("3");
            jButton4.addActionListener(new java.awt.event.ActionListener() {
                public void actionPerformed(java.awt.event.ActionEvent evt) {
                    jButton4ActionPerformed(evt);
                }
            });

            jButton5.setText("4");
            jButton5.addActionListener(new java.awt.event.ActionListener() {
                public void actionPerformed(java.awt.event.ActionEvent evt) {
                    jButton5ActionPerformed(evt);
                }
            });

            jButton6.setText("5");
            jButton6.addActionListener(new java.awt.event.ActionListener() {
                public void actionPerformed(java.awt.event.ActionEvent evt) {
                    jButton6ActionPerformed(evt);
                }
            });

            jButton7.setText("6");
            jButton7.addActionListener(new java.awt.event.ActionListener() {
                public void actionPerformed(java.awt.event.ActionEvent evt) {
                    jButton7ActionPerformed(evt);
                }
            });

            jButton8.setText("7");
            jButton8.addActionListener(new java.awt.event.ActionListener() {
                public void actionPerformed(java.awt.event.ActionEvent evt) {
                    jButton8ActionPerformed(evt);
                }
            });

            jButton9.setText("8");
            jButton9.addActionListener(new java.awt.event.ActionListener() {
                public void actionPerformed(java.awt.event.ActionEvent evt) {
                    jButton9ActionPerformed(evt);
                }
            });

            jButton10.setText("9");

            jButton11.setText("0");

            jButton12.setText("Add");

            jButton13.setText("Sub");

            jButton14.setText("Mul");

            jButton15.setText("Div");

            jButton1.setText("Enter");

            jButton16.setText("Reset");

            jButton17.setText("Equals");

            javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
            this.setLayout(layout);
            layout.setHorizontalGroup(
                layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(layout.createSequentialGroup()
                    .addContainerGap()
                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                        .addComponent(jTextField2)
                        .addComponent(jTextField3)
                        .addComponent(jTextField4)
                        .addGroup(layout.createSequentialGroup()
                            .addComponent(jButton3)
                            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                            .addComponent(jButton2)
                            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                            .addComponent(jButton4)
                            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                            .addComponent(jButton5)
                            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                            .addComponent(jButton6)
                            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                            .addComponent(jButton12)
                            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                            .addComponent(jButton14))
                        .addGroup(layout.createSequentialGroup()
                            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                                .addGroup(layout.createSequentialGroup()
                                    .addComponent(jButton1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                    .addComponent(jButton16, javax.swing.GroupLayout.PREFERRED_SIZE, 113, javax.swing.GroupLayout.PREFERRED_SIZE))
                                .addGroup(layout.createSequentialGroup()
                                    .addComponent(jButton7)
                                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                    .addComponent(jButton8)
                                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                    .addComponent(jButton9)
                                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                    .addComponent(jButton10)
                                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                    .addComponent(jButton11)))
                            .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                .addGroup(layout.createSequentialGroup()
                                    .addComponent(jButton13)
                                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                    .addComponent(jButton15)
                                    .addGap(0, 0, Short.MAX_VALUE))
                                .addComponent(jButton17, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))))
                    .addContainerGap())
            );
            layout.setVerticalGroup(
                layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(layout.createSequentialGroup()
                    .addContainerGap()
                    .addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                    .addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                    .addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGap(7, 7, 7)
                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(jButton3)
                        .addComponent(jButton2)
                        .addComponent(jButton4)
                        .addComponent(jButton5)
                        .addComponent(jButton6)
                        .addComponent(jButton12)
                        .addComponent(jButton14))
                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(jButton7)
                        .addComponent(jButton8)
                        .addComponent(jButton9)
                        .addComponent(jButton10)
                        .addComponent(jButton11)
                        .addComponent(jButton13)
                        .addComponent(jButton15))
                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(jButton1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addComponent(jButton17, javax.swing.GroupLayout.DEFAULT_SIZE, 40, Short.MAX_VALUE)
                        .addComponent(jButton16))
                    .addContainerGap())
            );
        }//</editor-fold>

        private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
            //TODO add your handling code here:
        }

        private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
            //TODO add your handling code here:
        }

        private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {
            //TODO add your handling code here:
        }

        private void jButton5ActionPerformed(java.awt.event.ActionEvent evt) {
            //TODO add your handling code here:
        }

        private void jButton6ActionPerformed(java.awt.event.ActionEvent evt) {
            //TODO add your handling code here:
        }

        private void jButton7ActionPerformed(java.awt.event.ActionEvent evt) {
            //TODO add your handling code here:
        }

        private void jButton8ActionPerformed(java.awt.event.ActionEvent evt) {
            //TODO add your handling code here:
        }

        private void jButton9ActionPerformed(java.awt.event.ActionEvent evt) {
            //TODO add your handling code here:
        }

        //Variables declaration - do not modify
        private javax.swing.JButton jButton1;
        private javax.swing.JButton jButton10;
        private javax.swing.JButton jButton11;
        private javax.swing.JButton jButton12;
        private javax.swing.JButton jButton13;
        private javax.swing.JButton jButton14;
        private javax.swing.JButton jButton15;
        private javax.swing.JButton jButton16;
        private javax.swing.JButton jButton17;
        private javax.swing.JButton jButton2;
        private javax.swing.JButton jButton3;
        private javax.swing.JButton jButton4;
        private javax.swing.JButton jButton5;
        private javax.swing.JButton jButton6;
        private javax.swing.JButton jButton7;
        private javax.swing.JButton jButton8;
        private javax.swing.JButton jButton9;
        private javax.swing.JTextField jTextField2;
        private javax.swing.JTextField jTextField3;
        private javax.swing.JTextField jTextField4;
        //End of variables declaration

        public static void main(String args[]) {
            java.awt.EventQueue.invokeLater(new Runnable() {
                @Override
                public void run() {
                    new CalculatorForm().setVisible(true);
                }
            });
        }

        }

Ich kann nicht herausfinden, was falsch in meinem code, nicht die Mühe, die typo-Fehler ", wie die Nummerierung der Schaltflächen" ich bin nur besorgt, wie um zu zeigen das Panel

Ok, ich bearbeitet den code, den ich merge es mit der public static void main.. für one time init

import javax.swing.JButton;
import javax.swing.JTextField;

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 *
 * @author Jfetizanan
 */
public class NewMain {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {

        JTextField jTextField2 = new javax.swing.JTextField();
        JTextField jTextField3 = new javax.swing.JTextField();
        JTextField jTextField4 = new javax.swing.JTextField();
        JButton jButton2 = new javax.swing.JButton();
        JButton jButton3 = new javax.swing.JButton();
        JButton jButton4 = new javax.swing.JButton();
        JButton jButton5 = new javax.swing.JButton();
        JButton jButton6 = new javax.swing.JButton();
        JButton jButton7 = new javax.swing.JButton();
        JButton jButton8 = new javax.swing.JButton();
        JButton jButton9 = new javax.swing.JButton();
        JButton jButton10 = new javax.swing.JButton();
        JButton jButton11 = new javax.swing.JButton();
        JButton jButton12 = new javax.swing.JButton();
        JButton jButton13 = new javax.swing.JButton();
        JButton jButton14 = new javax.swing.JButton();
        JButton jButton15 = new javax.swing.JButton();
        JButton jButton1 = new javax.swing.JButton();
        JButton jButton16 = new javax.swing.JButton();
        JButton jButton17 = new javax.swing.JButton();

        jButton2.setText("2");
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            @Override
            public void actionPerformed(java.awt.event.ActionEvent evt) {

            }
        });

        jButton3.setText("1");
        jButton3.addActionListener(new java.awt.event.ActionListener() {
            @Override
            public void actionPerformed(java.awt.event.ActionEvent evt) {

            }
        });

        jButton4.setText("3");
        jButton4.addActionListener(new java.awt.event.ActionListener() {
            @Override
            public void actionPerformed(java.awt.event.ActionEvent evt) {

            }
        });

        jButton5.setText("4");
        jButton5.addActionListener(new java.awt.event.ActionListener() {
            @Override
            public void actionPerformed(java.awt.event.ActionEvent evt) {

            }
        });

        jButton6.setText("5");
        jButton6.addActionListener(new java.awt.event.ActionListener() {
            @Override
            public void actionPerformed(java.awt.event.ActionEvent evt) {

            }
        });

        jButton7.setText("6");
        jButton7.addActionListener(new java.awt.event.ActionListener() {
            @Override
            public void actionPerformed(java.awt.event.ActionEvent evt) {

            }
        });

        jButton8.setText("7");
        jButton8.addActionListener(new java.awt.event.ActionListener() {
            @Override
            public void actionPerformed(java.awt.event.ActionEvent evt) {

            }
        });

        jButton9.setText("8");
        jButton9.addActionListener(new java.awt.event.ActionListener() {
            @Override
            public void actionPerformed(java.awt.event.ActionEvent evt) {

            }
        });

        jButton10.setText("9");

        jButton11.setText("0");

        jButton12.setText("Add");

        jButton13.setText("Sub");

        jButton14.setText("Mul");

        jButton15.setText("Div");

        jButton1.setText("Enter");

        jButton16.setText("Reset");

        jButton17.setText("Equals");

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
        this.setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addComponent(jTextField2)
                    .addComponent(jTextField3)
                    .addComponent(jTextField4)
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jButton3)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                        .addComponent(jButton2)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                        .addComponent(jButton4)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jButton5)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jButton6)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                        .addComponent(jButton12)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                        .addComponent(jButton14))
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                            .addGroup(layout.createSequentialGroup()
                                .addComponent(jButton1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                .addComponent(jButton16, javax.swing.GroupLayout.PREFERRED_SIZE, 113, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addGroup(layout.createSequentialGroup()
                                .addComponent(jButton7)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                .addComponent(jButton8)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                .addComponent(jButton9)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(jButton10)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(jButton11)))
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addComponent(jButton13)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
                                .addComponent(jButton15)
                                .addGap(0, 0, Short.MAX_VALUE))
                            .addComponent(jButton17, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))))
                .addContainerGap())
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addContainerGap()
                .addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(7, 7, 7)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton3)
                    .addComponent(jButton2)
                    .addComponent(jButton4)
                    .addComponent(jButton5)
                    .addComponent(jButton6)
                    .addComponent(jButton12)
                    .addComponent(jButton14))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton7)
                    .addComponent(jButton8)
                    .addComponent(jButton9)
                    .addComponent(jButton10)
                    .addComponent(jButton11)
                    .addComponent(jButton13)
                    .addComponent(jButton15))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                    .addComponent(jButton17, javax.swing.GroupLayout.DEFAULT_SIZE, 40, Short.MAX_VALUE)
                    .addComponent(jButton16))
                .addContainerGap())
        );

    }
}

Aber wie wäre es damit, es zeigt Fehler

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
        this.setLayout(layout);

Wie kann ich alle Objekte des Frame

Ok ich endlich fertig code.. hier ist es Dank

JPanel wird nicht angezeigt

es gibt keine Notwendigkeit setVisible für JPanel, wie Sie standardmäßig sichtbar, wenn Hinzugefügt wird, übergeordneten Komponente
uhmm.. wie Sie initialisiert werden "öffentlichen CalculatorForm()"
Was mache ich hier public static void main(String args[]) { java.das awt.EventQueue.invokeLater(new Runnable() { @Override public void run() { } });
Als beiseite. Wenn Sie das nächste mal Probleme mit einem GUI, bitte eine Frage stellen, wenn man 1 oder 2 Tasten, im Gegensatz zu 17 Tasten, 4 text-Felder.. Das Grundprinzip bei der Entwicklung von code ist 'kompilieren & führen Sie oft - eine Frage stellen, die erste Zeit scheint es, dass Sie keine Antwort von Ihrem eigenen Forschung'.

InformationsquelleAutor JFetz2191 | 2012-08-12

Dies ist falsch,

public class CalculatorForm extends javax.swing.JPanel

sollte es

public class CalculatorForm extends javax.swing.JFrame

Und hier ist eine richtige Art und Weise Wie man Frames

UPDATE:
Tun, wie Sie tun, aber innerhalb initComponents()

JPanel panel = new JPanel();
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(panel);
panel.setLayout(layout);
add(panel);

UPDATE : Hier ist die richtige Art und Weise tun

public class CalculatorForm {

    private static final long serialVersionUID = 1L;

    public CalculatorForm() {
        initComponents();
    }

    private void initComponents() {
        JFrame frame = new JFrame();
        //frame settings like size, close operation etc.
        JPanel panel = new JPanel();
        //init textfields and buttons
        //add listeners or whatever
        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(panel);
        panel.setLayout(layout);
        //layout settings goes here
        frame.add(panel);
        frame.setVisible(true);
    }
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                new CalculatorForm();
            }
        });
    }
}

+1 für das sehen offensichtlich!
(oder es sollte Hinzugefügt werden, um einen Rahmen)
wie führen Sie "öffentliche CalculatorForm()" in diesem code public static void main(String args[]) { java.das awt.EventQueue.invokeLater(new Runnable() { @Override public void run() { ------------------ } });
überprüfen Sie meine zu Bearbeiten
Der erste vielleicht nicht ratsam (die Verlängerung eine Komponente gibt es keine Notwendigkeit, Sie zu erweitern), aber es war nicht 'falsch'. Die GUI gesehen werden könnte, durch ändern new CalculatorForm().setVisible(true); zu JOptionPane.showMessageDialog(null, new CalculatorForm());

InformationsquelleAutor Harmeet Singh

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