Wie füge ich Textzeilen zu einem Fenster in Java Swing hinzu?

Ich habe eine Java Klasse, die eine Benutzeroberfläche und ein paar weiße Felder erstellt, aber ich möchte ein paar Zeilen Text über die Boxen. Ich habe versucht System.out.println("Please select an Area or a Type Of Model from the drop down menus");, aber das funktioniert nicht. Der Code, den ich habe, istWie füge ich Textzeilen zu einem Fenster in Java Swing hinzu?

import java.awt.Color; 
import java.awt.Dimension; 
import java.awt.event.ActionEvent; 
import java.awt.event.ActionListener; 
import java.awt.event.KeyEvent; 

import javax.swing.JFrame; 
import javax.swing.JMenu; 
import javax.swing.JMenuBar; 
import javax.swing.JMenuItem; 
import javax.swing.JPanel; 

class MenuActionListener implements ActionListener { 
    public void actionPerformed(ActionEvent e) { 
     System.out.println("Selected: " + e.getActionCommand()); 
    } 
} 

public class testone{  

    public static void main(final String args[]) { 
     JFrame frame = new JFrame("test"); 
     frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
     JMenuBar menuBar = new JMenuBar(); 


     // File Menu, F - Mnemonic 
     JMenu fileMenu = new JMenu("Areas"); 
     fileMenu.setMnemonic(KeyEvent.VK_F); 
     menuBar.add(fileMenu); 

     // File->New, N - Mnemonic 
     JMenuItem newMenuItem = new JMenuItem("A1"); 
     newMenuItem.addActionListener(new MenuActionListener()); 
     fileMenu.add(newMenuItem); 

     newMenuItem = new JMenuItem("A2"); 
     newMenuItem.addActionListener(new MenuActionListener()); 
     fileMenu.add(newMenuItem); 

     newMenuItem = new JMenuItem("A3"); 
     newMenuItem.addActionListener(new MenuActionListener()); 
     fileMenu.add(newMenuItem); 

     fileMenu = new JMenu("Types Of Models"); 
     fileMenu.setMnemonic(KeyEvent.VK_F); 
     menuBar.add(fileMenu); 

     newMenuItem = new JMenuItem("T1"); 
     newMenuItem.addActionListener(new MenuActionListener()); 
     fileMenu.add(newMenuItem); 

     newMenuItem = new JMenuItem("T2"); 
     newMenuItem.addActionListener(new MenuActionListener()); 
     fileMenu.add(newMenuItem); 

     newMenuItem = new JMenuItem("T3"); 
     newMenuItem.addActionListener(new MenuActionListener()); 
     fileMenu.add(newMenuItem); 



     frame.setJMenuBar(menuBar); 
     frame.setSize(1200, 650); 
     frame.setVisible(true); 

     // Set up subpanels 
     JPanel subPanel1 = new JPanel(); 
     subPanel1.setPreferredSize (new Dimension(135, 135)); 
     subPanel1.setBackground (Color.white); 

     JPanel subPanel2 = new JPanel(); 
     subPanel2.setPreferredSize (new Dimension(135, 135)); 
     subPanel2.setBackground (Color.white); 

     JPanel subPanel3 = new JPanel(); 
     subPanel3.setPreferredSize (new Dimension (135, 135)); 
     subPanel3.setBackground(Color.white); 

     JPanel subPanel4 = new JPanel(); 
     subPanel4.setPreferredSize (new Dimension (135, 135)); 
     subPanel4.setBackground(Color.white); 

     JPanel subPanel5 = new JPanel(); 
     subPanel5.setPreferredSize (new Dimension (135, 135)); 
     subPanel5.setBackground(Color.white); 

     JPanel subPanel6 = new JPanel(); 
     subPanel6.setPreferredSize (new Dimension (135, 135)); 
     subPanel6.setBackground(Color.white); 

     JPanel subPanel7 = new JPanel(); 
     subPanel7.setPreferredSize (new Dimension (135, 135)); 
     subPanel7.setBackground(Color.white); 

     JPanel subPanel8 = new JPanel(); 
     subPanel8.setPreferredSize (new Dimension (135, 135)); 
     subPanel8.setBackground(Color.white); 

     JPanel subPanel9 = new JPanel(); 
     subPanel9.setPreferredSize (new Dimension (135, 135)); 
     subPanel9.setBackground(Color.white); 

     JPanel subPanel10 = new JPanel(); 
     subPanel10.setPreferredSize (new Dimension (135, 135)); 
     subPanel10.setBackground(Color.white); 

     JPanel subPanel11 = new JPanel(); 
     subPanel11.setPreferredSize (new Dimension (135, 135)); 
     subPanel11.setBackground(Color.white); 

     JPanel subPanel12 = new JPanel(); 
     subPanel12.setPreferredSize (new Dimension (135, 135)); 
     subPanel12.setBackground(Color.white); 

     JPanel subPanel13 = new JPanel(); 
     subPanel13.setPreferredSize (new Dimension (135, 135)); 
     subPanel13.setBackground(Color.white); 

     JPanel subPanel14 = new JPanel(); 
     subPanel14.setPreferredSize (new Dimension (135, 135)); 
     subPanel14.setBackground(Color.white); 

     JPanel subPanel15 = new JPanel(); 
     subPanel15.setPreferredSize (new Dimension (135, 135)); 
     subPanel15.setBackground(Color.white); 

     JPanel subPanel16 = new JPanel(); 
     subPanel16.setPreferredSize (new Dimension (135, 135)); 
     subPanel16.setBackground(Color.white); 

     JPanel subPanel17 = new JPanel(); 
     subPanel17.setPreferredSize (new Dimension (135, 135)); 
     subPanel17.setBackground(Color.white); 

     JPanel subPanel18 = new JPanel(); 
     subPanel18.setPreferredSize (new Dimension (135, 135)); 
     subPanel18.setBackground(Color.white); 

     JPanel subPanel19 = new JPanel(); 
     subPanel19.setPreferredSize (new Dimension (135, 135)); 
     subPanel19.setBackground(Color.white); 

     JPanel subPanel20 = new JPanel(); 
     subPanel20.setPreferredSize (new Dimension (135, 135)); 
     subPanel20.setBackground(Color.white); 

     JPanel subPanel21 = new JPanel(); 
     subPanel21.setPreferredSize (new Dimension (135, 135)); 
     subPanel21.setBackground(Color.white); 

     JPanel subPanel22 = new JPanel(); 
     subPanel22.setPreferredSize (new Dimension (135, 135)); 
     subPanel22.setBackground(Color.white); 

     JPanel subPanel23 = new JPanel(); 
     subPanel23.setPreferredSize (new Dimension (135, 135)); 
     subPanel23.setBackground(Color.white); 

     JPanel subPanel24 = new JPanel(); 
     subPanel24.setPreferredSize (new Dimension (135, 135)); 
     subPanel24.setBackground(Color.white); 

     JPanel subPanel25 = new JPanel(); 
     subPanel25.setPreferredSize (new Dimension (135, 135)); 
     subPanel25.setBackground(Color.white); 

     JPanel subPanel26 = new JPanel(); 
     subPanel26.setPreferredSize (new Dimension (135, 135)); 
     subPanel26.setBackground(Color.white); 

     JPanel subPanel27 = new JPanel(); 
     subPanel27.setPreferredSize (new Dimension (135, 135)); 
     subPanel27.setBackground(Color.white); 

     JPanel subPanel28 = new JPanel(); 
     subPanel28.setPreferredSize (new Dimension (135, 135)); 
     subPanel28.setBackground(Color.white); 

     JPanel subPanel29 = new JPanel(); 
     subPanel29.setPreferredSize (new Dimension (135, 135)); 
     subPanel29.setBackground(Color.white); 

     JPanel subPanel30 = new JPanel(); 
     subPanel30.setPreferredSize (new Dimension (135, 135)); 
     subPanel30.setBackground(Color.white); 

     JPanel subPanel31 = new JPanel(); 
     subPanel31.setPreferredSize (new Dimension (135, 135)); 
     subPanel31.setBackground(Color.white); 

     JPanel subPanel32 = new JPanel(); 
     subPanel32.setPreferredSize (new Dimension (135, 135)); 
     subPanel32.setBackground(Color.white); 

     JPanel subPanel33 = new JPanel(); 
     subPanel33.setPreferredSize (new Dimension (135, 135)); 
     subPanel33.setBackground(Color.white); 

     JPanel subPanel34 = new JPanel(); 
     subPanel34.setPreferredSize (new Dimension (135, 135)); 
     subPanel34.setBackground(Color.white); 

     JPanel subPanel35 = new JPanel(); 
     subPanel35.setPreferredSize (new Dimension (135, 135)); 
     subPanel35.setBackground(Color.white); 

     JPanel subPanel36 = new JPanel(); 
     subPanel36.setPreferredSize (new Dimension (135, 135)); 
     subPanel36.setBackground(Color.white); 

     // Set up primary panel 
     JPanel primary = new JPanel(); 
     primary.setBackground (Color.lightGray); 
     primary.add (subPanel1); 
     primary.add (subPanel2); 
     primary.add (subPanel3); 
     primary.add (subPanel4); 
     primary.add (subPanel5); 
     primary.add (subPanel6); 
     primary.add (subPanel7); 
     primary.add (subPanel8); 
     primary.add (subPanel9); 
     primary.add (subPanel10); 
     primary.add (subPanel11); 
     primary.add (subPanel12); 
     primary.add (subPanel13); 
     primary.add (subPanel14); 
     primary.add (subPanel15); 
     primary.add (subPanel16); 
     primary.add (subPanel17); 
     primary.add (subPanel18); 
     primary.add (subPanel19); 
     primary.add (subPanel20); 
     primary.add (subPanel21); 
     primary.add (subPanel22); 
     primary.add (subPanel23); 
     primary.add (subPanel24); 
     primary.add (subPanel25); 
     primary.add (subPanel26); 
     primary.add (subPanel27); 
     primary.add (subPanel28); 
     primary.add (subPanel29); 
     primary.add (subPanel30); 
     primary.add (subPanel31); 
     primary.add (subPanel32); 
     primary.add (subPanel33); 
     primary.add (subPanel34); 
     primary.add (subPanel35); 
     primary.add (subPanel36); 

     frame.getContentPane().add(primary); 
     frame.pack(); 
     frame.setVisible(true); 
    } 
}

Was will ich in setzen einige Anweisungen ist, dass, wenn die Menschen sie benutzen wollen, dann wissen sie, was ohne zu tun, die ganze Zeit wird gesagt.

Quelle

2016-04-17 smitthy

(a) Ist es Ihnen eingefallen, ein Array von JPanels zu verwenden und diese in einer Schleife zu erstellen und hinzuzufügen, anstatt Dutzende von Panels zu erstellen? (b) Wie wäre es mit der Erstellung eines 'JLabels' mit dem notwendigen Text und dem Hinzufügen zur GUI? – RealSkeptic

@RealSkeptic Es ist mir nicht eingefallen, aber ich werde es jetzt bearbeiten, so dass es in einem Array ist. Ich werde das 'JLabel' versuchen, danke – smitthy

Ich möchte

ich ein paar Zeilen Text über die Boxen setzen empfehlen eine JLabel zum Fenster hinzuzufügen.

Fügen Sie diese auf Ihren Code nach dem letzten SUBPANEL Zugabe primary.add(subPanel36);:

JPanel container = new JPanel(); 
JLabel lblAboutBoxes = new JLabel("Please select an Area or a Type Of Model from the drop down menus"); 
lblAboutBoxes.setHorizontalAlignment(JLabel.CENTER); 
lblAboutBoxes.setFont(new Font("Courier New", Font.BOLD, 22)); 
container.setLayout(new BoxLayout(container, BoxLayout.Y_AXIS)); 
container.add(lblAboutBoxes); 
container.add(primary);

Und

ersetzen

frame.getContentPane().add(primary);

von

frame.getContentPane().add(container);

Ausgang:

Quelle

2016-04-17 17:18:37

Danke! Es funktioniert, ich habe mich nur gefragt, ob es eine Möglichkeit gibt, die Box etwas kleiner zu machen? – smitthy

@smithy: Bitte überprüfen Sie meine bearbeitete Antwort, ich habe eine andere Lösung verwendet, jetzt ist die Box kleiner. –

Nochmals vielen Dank, aber jetzt lassen Sie mich nur 10 der 'JPanels' statt der 36 sehen Ich brauche – smitthy

Wie füge ich Textzeilen zu einem Fenster in Java Swing hinzu?

Antwort

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