Doppelclick auf einem List item

[Q-bert]

Hallo ich habe ein Programm geschrieben, die die von mir angegebene Daten (in meinem Fall Bücher) in eine Datenbank schreibt und die dann in drei Listen anzeigt. In den Listen habe ich das so, dass mir nur den Namen eines Buches gezeigt werden. Aber ich habe noch mehr infos über ein Buch. Ich möchte, dass wenn ich auf ein Buch in der Liste ein doppelcklick mache, dann ein neues Fenster sich öffnet und ich dort die weiteren infos über das Buch sehen kann Vielen dank voraus.

 

[httpdigest]

Ja dann mach das doch einfach.
Wo ist denn hier die Frage, bzw. das konkrete Problem?

 

[Q-bert]

Die konkrete Frage war eben wie mach ich das überhaupt

 

[httpdigest]

Dafür solltest du vielleicht erstmal sagen, ob du Swing, AWT, JavaFX oder SWT benutzt.

 

[Q-bert]

Jetzt ist sie anders. Ich habe so ein Code gefunden

list1.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent arg0) {
                if (arg0.getClickCount() == 2) {
                    moreInfo mi = new moreInfo();
                    mi.show(true);
                }
            }
        });

Es funktioniert auch. Nachdem ich ein Doppelklick mache , dann öffnet er ein neues Fenster. Doch das Problem ist, dass ein Fenster erst dann geöffnet wird, nachdem ich auf alle drei Lists ein doppelclick gemacht habe

 

[Q-bert]

Ich benutze SWING

 

[Robat]

Zeig mal den gesamten Code

 

[Q-bert]

package library;

import java.awt.*;
import java.sql.*;
import java.sql.Statement;

import javax.swing.*;
import javax.swing.border.EmptyBorder;

import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

public class Library extends JFrame {

    private JPanel contentPane;
   
    private final JList list1;
    private final JList list2;
    private final JList list3;
    private final DefaultListModel defLiMod1 = new DefaultListModel();
    private final DefaultListModel defLiMod2 = new DefaultListModel();
    private final DefaultListModel defLiMod3 = new DefaultListModel();
    private final JTextField txtTitle;
    private final JTextField txtAuthor;
    private final JTextField txtCategorie;
    private final JTextField txtYear;
    private final JLabel lblTitle;
    private final JLabel lblAuthor;
    private final JLabel lblCategorie;
    private final JLabel lblYear;
    private final JLabel lblAbout;
    private final JEditorPane edAbout;
    private final JScrollPane scAbout;
    private final JButton btnLoad;
    private final JButton btnAdd;
   
    private final JLabel lblList1;
    private final JLabel lblList2;
    private final JLabel lblList3;
   
    private final JScrollPane scList1;
    private final JScrollPane scList2;
    private final JScrollPane scList3;
   
    private final JRadioButton rbtnSach;
    private final JRadioButton rbtnFach;
    private final JRadioButton rbtnRom;
   
    private Connection connectLoad = null;
    private PreparedStatement preparedStatementLoadSach = null;
    private ResultSet resultSetLoadSach = null;
    private PreparedStatement preparedStatementLoadFach = null;
    private ResultSet resultSetLoadFach = null;
    private PreparedStatement preparedStatementLoadRom = null;
    private ResultSet resultSetLoadRom = null;
    private java.sql.Statement statementLoadSach = null;
    private java.sql.Statement statementLoadFach = null;
    private java.sql.Statement statementLoadRom = null;
   
    private Connection connectAdd = null;
    private java.sql.Statement statementAdd = null;
    private PreparedStatement preparedStatementAdd = null;
    private ResultSet resultSetAdd = null;

    // Password nicht vergessen
    private final String url = "jdbc:mysql://localhost:3306/library?user=root&password=!&useUnicode=true&characterEncoding=UTF-8&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC&autoReconnect=true&useSSL=false";
    private final ButtonGroup buttonGroup = new ButtonGroup();
   
   
    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    Library frame = new Library();
                    frame.setSize(1350, 1000);
                    frame.setResizable(false);
                    frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    /**
     * Create the frame.
     */
    public Library() {
       
        // Frame
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setBounds(100, 100, 1242, 615);
        contentPane = new JPanel();
        contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
        setContentPane(contentPane);
        contentPane.setLayout(null);
       
       
        // Other Components
        lblTitle = new JLabel();
        lblTitle.setBounds(960, 40, 50, 60);
        lblTitle.setBackground(Color.WHITE);
        lblTitle.setText("Title:");
        lblTitle.setVisible(true);
        contentPane.add(lblTitle);
       
        txtTitle = new JTextField();
        txtTitle.setBounds(960, 80, 300, 40);
        txtTitle.setVisible(true);
        contentPane.add(txtTitle);       

        lblAuthor = new JLabel();
        lblAuthor.setBounds(960, 100, 81, 60);
        lblAuthor.setBackground(Color.WHITE);
        lblAuthor.setText("Author:");
        lblAuthor.setVisible(true);
        contentPane.add(lblAuthor);
       
        txtAuthor = new JTextField();
        txtAuthor.setBounds(960, 140, 300, 40);
        txtAuthor.setVisible(true);
        contentPane.add(txtAuthor);

        lblCategorie = new JLabel();
        lblCategorie.setBounds(960, 160, 100, 60);
        lblCategorie.setBackground(Color.WHITE);
        lblCategorie.setText("Kategory:");
        lblCategorie.setVisible(true);
        contentPane.add(lblCategorie);

        txtCategorie = new JTextField();
        txtCategorie.setBounds(960, 200, 300, 40);
        txtCategorie.setVisible(true);
        contentPane.add(txtCategorie);
       
        lblYear = new JLabel();
        lblYear.setBounds(960, 220, 100, 60);
        lblYear.setBackground(Color.WHITE);
        lblYear.setText("Year:");
        lblYear.setVisible(true);
        contentPane.add(lblYear);

        txtYear = new JTextField();
        txtYear.setBounds(960, 260, 300, 40);
        txtYear.setVisible(true);
        contentPane.add(txtYear);
       
        lblAbout = new JLabel();
        lblAbout.setBounds(960, 280, 300, 60);
        lblAbout.setBackground(Color.WHITE);
        lblAbout.setText("About:");
        lblAbout.setVisible(true);
        contentPane.add(lblAbout);
       
        edAbout = new JEditorPane();
        edAbout.setBounds(960, 320, 300, 200);
        edAbout.setVisible(true);
        scAbout = new JScrollPane(edAbout, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
        scAbout.setBounds(960, 320, 300, 200);
        scAbout.setVisible(true);
        contentPane.add(scAbout);
       
        lblList1 = new JLabel();
        lblList1.setBounds(0, 0, 300, 60);
        lblList1.setText("Sachbücher");
        lblList1.setVisible(true);
        lblList1.setBackground(Color.WHITE);
        contentPane.add(lblList1);
       
        lblList2 = new JLabel();
        lblList2.setBounds(320, 0, 300, 60);
        lblList2.setText("Fachbücher");
        lblList2.setVisible(true);
        lblList2.setBackground(Color.WHITE);
        contentPane.add(lblList2);
       
        lblList3 = new JLabel();
        lblList3.setBounds(640, 0, 300, 60);
        lblList3.setText("Romane");
        lblList3.setVisible(true);
        lblList3.setBackground(Color.WHITE);
        contentPane.add(lblList3);
       
        list1 = new JList(defLiMod1);
        list1.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent arg0) {
                if (arg0.getClickCount() == 2) {
                    moreInfo mi = new moreInfo();
                    mi.show(true);
                }
            }
        });
        list1.setBounds(0, 40, 300, 1000);
        list1.setBackground(Color.WHITE);
        list1.setVisible(true);
        scList1 = new JScrollPane(list1, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
        scList1.setBounds(0, 40, 300, 1000);
        scList1.setVisible(true);
        contentPane.add(scList1);
       
        list2 = new JList(defLiMod2);
        list1.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent arg0) {
                if (arg0.getClickCount() == 2) {
                    moreInfo mi = new moreInfo();
                    mi.show(true);
                }
            }
        });
        list2.setBounds(300, 40, 300, 1000);
        list2.setBackground(Color.WHITE);
        list2.setVisible(true);
        scList2 = new JScrollPane(list2, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
        scList2.setBounds(320, 40, 300, 1000);
        scList2.setVisible(true);
        contentPane.add(scList2);
       
        list3 = new JList(defLiMod3);
        list1.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseClicked(MouseEvent arg0) {
                if (arg0.getClickCount() == 2) {
                    moreInfo mi = new moreInfo();
                    mi.show(true);
                }
            }
        });
        list3.setBounds(600, 40, 300, 1000);
        list3.setBackground(Color.WHITE);
        list3.setVisible(true);
        scList3 = new JScrollPane(list3, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
        scList3.setBounds(640, 40, 300, 1000);
        scList3.setVisible(true);
        contentPane.add(scList3);
       
        btnLoad = new JButton();
        btnLoad.setBounds(1012, 550, 200, 60);
        btnLoad.setText("Lade Bücher");
        btnLoad.setVisible(true);
        contentPane.add(btnLoad);
        btnLoad.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                try {
                    loadBoocks();
                } catch (Exception ex){
                    ex.printStackTrace();
                    System.out.println(ex);
                }
            }
        });
       
        rbtnSach = new JRadioButton();
        buttonGroup.add(rbtnSach);
        rbtnSach.setBounds(1012, 620, 200, 30);
        rbtnSach.setText("Sachbuch");
        contentPane.add(rbtnSach);
       
        rbtnFach = new JRadioButton();
        buttonGroup.add(rbtnFach);
        rbtnFach.setBounds(1012, 640, 200, 30);
        rbtnFach.setText("Fachbuch");
        contentPane.add(rbtnFach);
       
        rbtnRom = new JRadioButton();
        buttonGroup.add(rbtnRom);
        rbtnRom.setBounds(1012, 660, 200, 30);
        rbtnRom.setText("Roman");
        contentPane.add(rbtnRom);
       
        btnAdd = new JButton();
        btnAdd.setBounds(1012, 700, 200, 60);
        btnAdd.setText("Einfügen");
        btnAdd.setVisible(true);
        contentPane.add(btnAdd);
        btnAdd.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                try {
                    addBoocks();
                } catch (Exception ex){
                    ex.printStackTrace();
                    System.out.println(ex);
                }
            }
        });
       
    }
   
    public void addBoocks() throws Exception {
        String title = txtTitle.getText();
        String author = txtAuthor.getText();
        String categorie = txtCategorie.getText();
        String year = txtYear.getText();
        int yearINT = Integer.parseInt(year);
        String about = edAbout.getText();
        if (rbtnSach.isSelected() == true) {
        try {
            Class.forName("com.mysql.cj.jdbc.Driver");
            Connection con = DriverManager.getConnection(url);
            statementAdd = con.createStatement();
            statementAdd.executeUpdate("INSERT INTO sachbücher " + "VALUES (" + '"' + title + '"' + ", " + '"' + author + '"' + ", " + '"' +categorie + '"' + ", " + '"' + yearINT + '"' + ", " + '"' + about + '"' + ")");
        } catch (Exception ex) {
            ex.printStackTrace();
            System.out.println(ex);
        }
        } else if(rbtnFach.isSelected() == true) {
            try {
                Class.forName("com.mysql.cj.jdbc.Driver");
                Connection con = DriverManager.getConnection(url);
                statementAdd = con.createStatement();
                statementAdd.executeUpdate("INSERT INTO fachbücher " + "VALUES (" +  '"' + title + '"' + ", " + '"' + author + '"' + ", " + '"' +categorie + '"' + ", " + '"' + yearINT + '"' + ", " + '"' + about + '"' + ")");
            } catch (Exception ex) {
                ex.printStackTrace();
                System.out.println(ex);
            }
        } else if (rbtnRom.isSelected() == true) {
            try {
                Class.forName("com.mysql.cj.jdbc.Driver");
                Connection con = DriverManager.getConnection(url);
                statementAdd = con.createStatement();
                statementAdd.executeUpdate("INSERT INTO romane " + "VALUES (" +  '"' + title + '"' + ", " + '"' + author + '"' + ", " + '"' +categorie + '"' + ", " + '"' + yearINT + '"' + ", " + '"' + about + '"' + ")");
            } catch (Exception ex) {
                ex.printStackTrace();
                System.out.println(ex);
            }
        }
    }
   
    public void loadBoocks() throws Exception{
        try {
            Class.forName("com.mysql.cj.jdbc.Driver");
            Connection con = DriverManager.getConnection(url);
            statementLoadSach = con.createStatement();
            resultSetLoadSach = statementLoadSach.executeQuery("select Title from sachbücher");
           
            statementLoadFach = con.createStatement();
            resultSetLoadFach = statementLoadFach.executeQuery("select Title from fachbücher");
           
            statementLoadRom = con.createStatement();
            resultSetLoadRom = statementLoadRom.executeQuery("select Title from romane");
           
            while (resultSetLoadSach.next())
              {
                String titleSach = resultSetLoadSach.getString("Title");
                defLiMod1.addElement(titleSach);
              }
           
            while (resultSetLoadFach.next())
              {
                String titleFach = resultSetLoadFach.getString("Title");
                defLiMod2.addElement(titleFach);
              }
            while (resultSetLoadRom.next())
              {
                String titleRom = resultSetLoadRom.getString("Title");
                defLiMod3.addElement(titleRom);
              }
           
            System.out.println("Es hat geklappt");
        } catch (Exception ex) {
            ex.printStackTrace();
            System.out.println(ex);
        }
    }
}

 

[HarleyDavidson]

Nach deinem Code setzt du für "list1" dreimal einen MouseListener (Zeile 187, 205 und 222).
list2 und list3 bekommen keinen.
Wenn ich deinen Code ausführe und auf list1 einen Doppelklick ausführe,
wird dreimal das folgende ausgeführt:

moreInfo mi = new moreInfo();
mi.show(true);

 

[Q-bert]

Oh ja ich habe vergesse gestern Abend noch zu schreiben, dass es mit aufgefallen ist und ich mein Problem gelöst habe. Aber danke für die Antworten