Probleme mit Swing

[Johnson]

Hi@all,

ich habe mir eine Demofunktion geschrieben, die mir beim Wechseln in der Navigation (mittels JComboBox) jeweils etwas anderes auf dem JPanel anzeigen sollte.

Leider funktioniert es nicht.
Was hab ich falsch gemacht? Hier ist meine Funktion:

	public static JPanel demo(){
		//COLLECTION WITH CONNECTION
		Connection cn;
		cn = new DB_Object().get_Connection();
		DB_Statistics db = new DB_Statistics();
		Collection<DTO_Statistics> col = null;
		
		//Panels		
		JPanel panel = new JPanel(new BorderLayout());
		JPanel navi = new JPanel(new GridLayout(1,5));
		JComboBox jComboBox = null;
		
		//Combobox_Model
		ComboBoxModel jComboBox_GenderModel = new DefaultComboBoxModel
		(
			new String[] { 
							"Religion", 
							"Politik", 
							"Geschlecht", 
							"Sternzeichen" 
						  }
		);
		
		//Combobox
		jComboBox = new JComboBox();
		jComboBox.setModel(jComboBox_GenderModel);
		jComboBox.setEditable(false);
		
		//Action
		jComboBox.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
            	Object oldItem = null;
            	JComboBox cb = (JComboBox)e.getSource();

                // Get the new item
                int newIndex = cb.getSelectedIndex();
                Object newItem = cb.getSelectedItem();
                
                // Determine if different from previously selected item
                boolean same = newItem.equals(oldItem);
                if(!same)
                	oldItem = newItem;

                if ("comboBoxEdited".equals(e.getActionCommand())) {
                    // User has typed in a string; only possible with an editable combobox
                } else if ("comboBoxChanged".equals(e.getActionCommand())) {
                    // User has selected an item; it may be the same item
                }
                
                System.out.println(newIndex + newItem.toString());
                
                FreeChartStatistics fcs = new FreeChartStatistics();
                fcs.setNewIndex(newIndex);
                fcs.setName(newItem.toString());
            }
        }); 	
		
		navi.add(jComboBox);
		navi.setSize(200, 22);
		
		panel.add(navi, BorderLayout.NORTH);
		
		//FREECHART's
		JPanel charts = new JPanel(new GridLayout(1,1));
		FreeChartStatistics fcs = new FreeChartStatistics();
		if(fcs.getNewIndex() == 0){
			col = db.userReligion_statisticMethod(cn);
			charts = FreeChartStatistics.PieChart3D_Religion(fcs.getName(), charts, col);
			panel.add(charts, BorderLayout.CENTER);
			charts.repaint();
			panel.repaint();
		}
		if(fcs.getNewIndex() == 1){
			col = db.userPolitical_statisticMethod(cn);
			charts = FreeChartStatistics.PieChart3D(fcs.getName(), charts, col);
			panel.add(charts, BorderLayout.CENTER);
			charts.repaint();
			panel.repaint();
		}
		if(fcs.getNewIndex() == 2){
			col = db.userSex_statisticMethod(cn);
			charts = FreeChartStatistics.PieChart3D(fcs.getName(), charts, col);
			panel.add(charts, BorderLayout.CENTER);
			charts.repaint();
			panel.repaint();
		}
		if(fcs.getNewIndex() == 3){
			col = db.userZodiacSign_statisticMethod(cn);
			charts = FreeChartStatistics.PieChart3D(fcs.getName(), charts, col);
			panel.add(charts, BorderLayout.CENTER);
			charts.repaint();
			panel.repaint();
		}

		new DB_Object().close_Connection(cn);
		charts.repaint();
		panel.repaint();

		return panel;
	}

Hatte schon versucht was mit repaint zu machen. Glaub das ist jetzt vielleicht auch ein bischen viel. Gebracht hats aber leider nix!

 

[André Uhres]

package layout;
/*
 * Demo.java
 */

import java.awt.*;
import java.awt.event.*;
import java.sql.*;
import java.util.*;
import javax.swing.*;
public class Demo extends JFrame {

    private static JPanel panel;
    private static Collection<DTO_Statistics> col;
    private static Connection cn;
    private static DB_Statistics db;
    private static FreeChartStatistics fcs;
    private static JPanel charts;

    public Demo() {
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        setSize(400, 300);
        setLocationRelativeTo(null);
        add(demo());
    }

    public static JPanel demo() {
        //COLLECTION WITH CONNECTION

        cn = new DB_Object().get_Connection();
        db = new DB_Statistics();

        //Panels      
        panel = new JPanel(new BorderLayout());
        charts = new JPanel(new GridLayout(1, 1));
        JPanel navi = new JPanel(new GridLayout(1, 5));
        JComboBox jComboBox = null;

        //Combobox_Model
        ComboBoxModel jComboBox_GenderModel = new DefaultComboBoxModel(
                new String[]{
            "Religion",
            "Politik",
            "Geschlecht",
            "Sternzeichen"
        });

        //Combobox
        jComboBox = new JComboBox();
        jComboBox.setModel(jComboBox_GenderModel);
        jComboBox.setEditable(false);

        //Action
        jComboBox.addActionListener(new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent e) {
                Object oldItem = null;
                JComboBox cb = (JComboBox) e.getSource();

                // Get the new item
                int newIndex = cb.getSelectedIndex();
                Object newItem = cb.getSelectedItem();

                // Determine if different from previously selected item
                boolean same = newItem.equals(oldItem);
                if (!same) {
                    oldItem = newItem;
                }

                if ("comboBoxEdited".equals(e.getActionCommand())) {
                // User has typed in a string; only possible with an editable combobox
                } else if ("comboBoxChanged".equals(e.getActionCommand())) {
                // User has selected an item; it may be the same item
                }

                System.out.println(newIndex + newItem.toString());

                fcs.setNewIndex(newIndex);
                fcs.setName(newItem.toString());
                freechart();
            }
        });

        navi.add(jComboBox);
        navi.setSize(200, 22);

        panel.add(navi, BorderLayout.NORTH);
        fcs = new FreeChartStatistics();
        freechart();
        return panel;
    }

    private static void freechart() {
        //FREECHART's
        panel.remove(charts);
        if (fcs.getNewIndex() == 0) {
            charts = FreeChartStatistics.PieChart3D_Religion(fcs.getName(), charts, col);
            panel.add(charts, BorderLayout.CENTER);
        }
        if (fcs.getNewIndex() == 1) {
            col = db.userPolitical_statisticMethod(cn);
            charts = FreeChartStatistics.PieChart3D(fcs.getName(), charts, col);
            panel.add(charts, BorderLayout.CENTER);
        }
        if (fcs.getNewIndex() == 2) {
            col = db.userSex_statisticMethod(cn);
            charts = FreeChartStatistics.PieChart3D(fcs.getName(), charts, col);
            panel.add(charts, BorderLayout.CENTER);
        }
        if (fcs.getNewIndex() == 3) {
            col = db.userZodiacSign_statisticMethod(cn);
            charts = FreeChartStatistics.PieChart3D(fcs.getName(), charts, col);
            panel.add(charts, BorderLayout.CENTER);
        }
// "cn" wird anscheinend noch gebraucht, daher sollte hier wohl kein close erfolgen
//        new DB_Object().close_Connection(cn);
        panel.revalidate();
        charts.repaint();
        panel.repaint();

    }

    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {

            @Override
            public void run() {
                new Demo().setVisible(true);
            }
        });
    }
}

class FreeChartStatistics {
    private static int newIndex;
    static JPanel PieChart3D(String name, JPanel charts, Collection<DTO_Statistics> col) {
        JPanel p = new JPanel();
        p.setBackground(getColor());
        return p;
    }
    static Color getColor() {
        switch (newIndex) {
            case 0:
                return Color.RED;
            case 1:
                return Color.BLUE;
            case 2:
                return Color.WHITE;
            case 3:
                return Color.GREEN;
        }
        return null;
    }
    static JPanel PieChart3D_Religion(String name, JPanel charts, Collection<DTO_Statistics> col) {
        JPanel p = new JPanel();
        p.setBackground(getColor());
        return p;
    }
    int getNewIndex() {
        return newIndex;
    }
    String getName() {
        return "";
    }
    void setName(String toString) {}
    void setNewIndex(int newIndex) {
        FreeChartStatistics.newIndex = newIndex;
    }
}
class DB_Object {
    void close_Connection(Connection cn) {
    }
    Connection get_Connection() {
        return null;
    }
}
class DB_Statistics {
    Collection<DTO_Statistics> userPolitical_statisticMethod(Connection cn) {
        return new ArrayList<DTO_Statistics>();
    }
    Collection<DTO_Statistics> userSex_statisticMethod(Connection cn) {
        return new ArrayList<DTO_Statistics>();
    }
    Collection<DTO_Statistics> userZodiacSign_statisticMethod(Connection cn) {
        return new ArrayList<DTO_Statistics>();
    }
}
class DTO_Statistics {}

 

[Johnson]

Hey, cool für die schnelle Hilfe..
Habs ausprobiert. Also dein Beispiel. Nur leider funktioniert es nicht.
Es ist egal welche Option ich ausführe immer noch rot im Hintergrund!

 

[André Uhres]

..Es ist egal welche Option ich ausführe immer noch rot im Hintergrund!

Hier ist das Gleiche als jar-Datei.
Die kannst du direkt ausführen: Demo.jar (Quellcode im jar)

 

[Johnson]

Na jetzt scheint es zu funktionieren. Vielen Dank.