2

を設定し、JTable18列を含めるようにしました。当初、13カラムのときは、にぴったりとはまり、JTable破れはありませんでした。ただし、18個のテーブルを含めるようにし、自動サイズ変更をオフに設定すると、水平スクロールバーを使用して他の列をスクロールしようとすると、次のJTable図に示すように、ティアリングが発生し始めました。

テーブル画像

Netbeansは、次のような多くのエラーメッセージも表示し始めました。

スレッド「AWT-EventQueue-0」の例外java.lang.ArrayIndexOutOfBoundsException：14
    javax.swing.JTable $ 1.getValueAt（JTable.java:689）で
    javax.swing.JTable.getValueAt（JTable.java:2720）で
    javax.swing.JTable.prepareRenderer（JTable.java:5718）で
    javax.swing.plaf.synth.SynthTableUI.paintCell（SynthTableUI.java:684）で
    javax.swing.plaf.synth.SynthTableUI.paintCells（SynthTableUI.java:581）で
    javax.swing.plaf.synth.SynthTableUI.paint（SynthTableUI.java:365）で
    javax.swing.plaf.synth.SynthTableUI.update（SynthTableUI.java:276）で
    javax.swing.JComponent.paintComponent（JComponent.java:778）で
    javax.swing.JComponent.paint（JComponent.java:1054）で
    javax.swing.JComponent.paintToOffscreen（JComponent.java:5221）で
    javax.swing.RepaintManager $ PaintManager.paintDoubleBuffered（RepaintManager.java:1482）で
    javax.swing.RepaintManager $ PaintManager.paint（RepaintManager.java:1413）で
    javax.swing.RepaintManager.paint（RepaintManager.java:1206）で
    javax.swing.JComponent.paintForceDoubleBuffered（JComponent.java:1090）で
    javax.swing.JViewport.blitDoubleBuffered（JViewport.java:1598）で
    javax.swing.JViewport.windowBlitPaint（JViewport.java:1559）で
    javax.swing.JViewport.setViewPosition（JViewport.java:1102）で
    javax.swing.plaf.basic.BasicScrollPaneUI $ Handler.hsbStateChanged（BasicScrollPaneUI.java:1087）で
    javax.swing.plaf.basic.BasicScrollPaneUI $ Handler.stateChanged（BasicScrollPaneUI.java:1038）で
    javax.swing.DefaultBoundedRangeModel.fireStateChanged（DefaultBoundedRangeModel.java:364）で
    javax.swing.DefaultBoundedRangeModel.setRangeProperties（DefaultBoundedRangeModel.java:302）で
    javax.swing.DefaultBoundedRangeModel.setValue（DefaultBoundedRangeModel.java:168）で
    javax.swing.JScrollBar.setValue（JScrollBar.java:463）で
    javax.swing.plaf.basic.BasicScrollBarUI $ TrackListener.setValueFrom（BasicScrollBarUI.java:1253）で
    javax.swing.plaf.basic.BasicScrollBarUI $ TrackListener.mouseDragged（BasicScrollBarUI.java:1195）で
    java.awt.Component.processMouseMotionEvent（Component.java:6553）で
    javax.swing.JComponent.processMouseMotionEvent（JComponent.java:3339）で
    java.awt.Component.processEvent（Component.java:6274）で
    java.awt.Container.processEvent（Container.java:2229）で
    java.awt.Component.dispatchEventImpl（Component.java:4861）で
    java.awt.Container.dispatchEventImpl（Container.java:2287）で
    java.awt.Component.dispatchEvent（Component.java:4687）で
    java.awt.LightweightDispatcher.retargetMouseEvent（Container.java:4832）で
    java.awt.LightweightDispatcher.processMouseEvent（Container.java:4509）で
    java.awt.LightweightDispatcher.dispatchEvent（Container.java:4422）で
    java.awt.Container.dispatchEventImpl（Container.java:2273）で
    java.awt.Window.dispatchEventImpl（Window.java:2719）で
    java.awt.Component.dispatchEvent（Component.java:4687）で
    java.awt.EventQueue.dispatchEventImpl（EventQueue.java:703）で
    java.awt.EventQueue.access $ 000（EventQueue.java:102）で
    java.awt.EventQueue $ 3.run（EventQueue.java:662）で
    java.awt.EventQueue $ 3.run（EventQueue.java:660）で
    java.security.AccessController.doPrivileged（ネイティブメソッド）で
    java.security.ProtectionDomain $ 1.doIntersectionPrivilege（ProtectionDomain.java:76）で
    java.security.ProtectionDomain $ 1.doIntersectionPrivilege（ProtectionDomain.java:87）で
    java.awt.EventQueue $ 4.run（EventQueue.java:676）で
    java.awt.EventQueue $ 4.run（EventQueue.java:674）で
    java.security.AccessController.doPrivileged（ネイティブメソッド）で
    java.security.ProtectionDomain $ 1.doIntersectionPrivilege（ProtectionDomain.java:76）で
    java.awt.EventQueue.dispatchEvent（EventQueue.java:673）で
    java.awt.EventDispatchThread.pumpOneEventForFilters（EventDispatchThread.java:244）で
    java.awt.EventDispatchThread.pumpEventsForFilter（EventDispatchThread.java:163）で
    java.awt.EventDispatchThread.pumpEventsForHierarchy（EventDispatchThread.java:151）で
    java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:147）で
    java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:139）で
    java.awt.EventDispatchThread.run（EventDispatchThread.java:97）で
スレッド「AWT-EventQueue-0」の例外java.lang.ArrayIndexOutOfBoundsException：14
    javax.swing.JTable $ 1.getValueAt（JTable.java:689）で
    javax.swing.JTable.getValueAt（JTable.java:2720）で
    javax.swing.JTable.prepareRenderer（JTable.java:5718）で
    javax.swing.plaf.synth.SynthTableUI.paintCell（SynthTableUI.java:684）で
    javax.swing.plaf.synth.SynthTableUI.paintCells（SynthTableUI.java:581）で
    javax.swing.plaf.synth.SynthTableUI.paint（SynthTableUI.java:365）で
    javax.swing.plaf.synth.SynthTableUI.update（SynthTableUI.java:276）で
    javax.swing.JComponent.paintComponent（JComponent.java:778）で
    javax.swing.JComponent.paint（JComponent.java:1054）で
    javax.swing.JComponent.paintChildren（JComponent.java:887）で
    javax.swing.JComponent.paint（JComponent.java:1063）で
    javax.swing.JViewport.paint（JViewport.java:731）で
    javax.swing.JComponent.paintChildren（JComponent.java:887）で
    javax.swing.JComponent.paint（JComponent.java:1063）で
    javax.swing.JComponent.paintChildren（JComponent.java:887）で
    javax.swing.JComponent.paint（JComponent.java:1063）で
    javax.swing.JComponent.paintToOffscreen（JComponent.java:5221）で
    javax.swing.RepaintManager $ PaintManager.paintDoubleBuffered（RepaintManager.java:1482）で
    javax.swing.RepaintManager $ PaintManager.paint（RepaintManager.java:1413）で
    javax.swing.RepaintManager.paint（RepaintManager.java:1206）で
    javax.swing.JComponent._paintImmediately（JComponent.java:5169）で
    javax.swing.JComponent.paintImmediately（JComponent.java:4980）で
    javax.swing.RepaintManager.paintDirtyRegions（RepaintManager.java:770）で
    javax.swing.RepaintManager.paintDirtyRegions（RepaintManager.java:728）で
    javax.swing.RepaintManager.prePaintDirtyRegions（RepaintManager.java:677）で
    javax.swing.RepaintManager.access $ 700（RepaintManager.java:59）で
    javax.swing.RepaintManager $ ProcessingRunnable.run（RepaintManager.java:1621）で
    java.awt.event.InvocationEvent.dispatch（InvocationEvent.java:251）で
    java.awt.EventQueue.dispatchEventImpl（EventQueue.java:701）で
    java.awt.EventQueue.access $ 000（EventQueue.java:102）で
    java.awt.EventQueue $ 3.run（EventQueue.java:662）で
    java.awt.EventQueue $ 3.run（EventQueue.java:660）で
    java.security.AccessController.doPrivileged（ネイティブメソッド）で
    java.security.ProtectionDomain $ 1.doIntersectionPrivilege（ProtectionDomain.java:76）で
    java.awt.EventQueue.dispatchEvent（EventQueue.java:671）で
    java.awt.EventDispatchThread.pumpOneEventForFilters（EventDispatchThread.java:244）で
    java.awt.EventDispatchThread.pumpEventsForFilter（EventDispatchThread.java:163）で
    java.awt.EventDispatchThread.pumpEventsForHierarchy（EventDispatchThread.java:151）で
    java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:147）で
    java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:139）で
    java.awt.EventDispatchThread.run（EventDispatchThread.java:97）で
スレッド「AWT-EventQueue-0」の例外java.lang.ArrayIndexOutOfBoundsException：14
    javax.swing.JTable $ 1.getValueAt（JTable.java:689）で
    javax.swing.JTable.getValueAt（JTable.java:2720）で
    javax.swing.JTable.prepareRenderer（JTable.java:5718）で
    javax.swing.plaf.synth.SynthTableUI.paintCell（SynthTableUI.java:684）で
    javax.swing.plaf.synth.SynthTableUI.paintCells（SynthTableUI.java:581）で
    javax.swing.plaf.synth.SynthTableUI.paint（SynthTableUI.java:365）で
    javax.swing.plaf.synth.SynthTableUI.update（SynthTableUI.java:276）で
    javax.swing.JComponent.paintComponent（JComponent.java:778）で
    javax.swing.JComponent.paint（JComponent.java:1054）で
    javax.swing.JComponent.paintToOffscreen（JComponent.java:5221）で
    javax.swing.RepaintManager $ PaintManager.paintDoubleBuffered（RepaintManager.java:1482）で
    javax.swing.RepaintManager $ PaintManager.paint（RepaintManager.java:1413）で
    javax.swing.RepaintManager.paint（RepaintManager.java:1206）で
    javax.swing.JComponent.paintForceDoubleBuffered（JComponent.java:1090）で
    javax.swing.JViewport.blitDoubleBuffered（JViewport.java:1598）で
    javax.swing.JViewport.windowBlitPaint（JViewport.java:1559）で
    javax.swing.JViewport.setViewPosition（JViewport.java:1102）で
    javax.swing.plaf.basic.BasicScrollPaneUI $ Handler.hsbStateChanged（BasicScrollPaneUI.java:1087）で
    javax.swing.plaf.basic.BasicScrollPaneUI $ Handler.stateChanged（BasicScrollPaneUI.java:1038）で
    javax.swing.DefaultBoundedRangeModel.fireStateChanged（DefaultBoundedRangeModel.java:364）で
    javax.swing.DefaultBoundedRangeModel.setRangeProperties（DefaultBoundedRangeModel.java:302）で
    javax.swing.DefaultBoundedRangeModel.setValue（DefaultBoundedRangeModel.java:168）で
    javax.swing.JScrollBar.setValue（JScrollBar.java:463）で
    javax.swing.plaf.basic.BasicScrollBarUI $ TrackListener.setValueFrom（BasicScrollBarUI.java:1253）で
    javax.swing.plaf.basic.BasicScrollBarUI $ TrackListener.mouseDragged（BasicScrollBarUI.java:1195）で
    java.awt.Component.processMouseMotionEvent（Component.java:6553）で
    javax.swing.JComponent.processMouseMotionEvent（JComponent.java:3339）で
    java.awt.Component.processEvent（Component.java:6274）で
    java.awt.Container.processEvent（Container.java:2229）で
    java.awt.Component.dispatchEventImpl（Component.java:4861）で
    java.awt.Container.dispatchEventImpl（Container.java:2287）で
    java.awt.Component.dispatchEvent（Component.java:4687）で
    java.awt.LightweightDispatcher.retargetMouseEvent（Container.java:4832）で
    java.awt.LightweightDispatcher.processMouseEvent（Container.java:4509）で
    java.awt.LightweightDispatcher.dispatchEvent（Container.java:4422）で
    java.awt.Container.dispatchEventImpl（Container.java:2273）で
    java.awt.Window.dispatchEventImpl（Window.java:2719）で
    java.awt.Component.dispatchEvent（Component.java:4687）で
    java.awt.EventQueue.dispatchEventImpl（EventQueue.java:703）で
    java.awt.EventQueue.access $ 000（EventQueue.java:102）で
    java.awt.EventQueue $ 3.run（EventQueue.java:662）で
    java.awt.EventQueue $ 3.run（EventQueue.java:660）で
    java.security.AccessController.doPrivileged（ネイティブメソッド）で
    java.security.ProtectionDomain $ 1.doIntersectionPrivilege（ProtectionDomain.java:76）で
    java.security.ProtectionDomain $ 1.doIntersectionPrivilege（ProtectionDomain.java:87）で
    java.awt.EventQueue $ 4.run（EventQueue.java:676）で
    java.awt.EventQueue $ 4.run（EventQueue.java:674）で
    java.security.AccessController.doPrivileged（ネイティブメソッド）で
    java.security.ProtectionDomain $ 1.doIntersectionPrivilege（ProtectionDomain.java:76）で
    java.awt.EventQueue.dispatchEvent（EventQueue.java:673）で
    java.awt.EventDispatchThread.pumpOneEventForFilters（EventDispatchThread.java:244）で
    java.awt.EventDispatchThread.pumpEventsForFilter（EventDispatchThread.java:163）で
    java.awt.EventDispatchThread.pumpEventsForHierarchy（EventDispatchThread.java:151）で
    java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:147）で
    java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:139）で
    java.awt.EventDispatchThread.run（EventDispatchThread.java:97）で
スレッド「AWT-EventQueue-0」の例外java.lang.ArrayIndexOutOfBoundsException：14
    javax.swing.JTable $ 1.getValueAt（JTable.java:689）で
    javax.swing.JTable.getValueAt（JTable.java:2720）で
    javax.swing.JTable.prepareRenderer（JTable.java:5718）で
    javax.swing.plaf.synth.SynthTableUI.paintCell（SynthTableUI.java:684）で
    javax.swing.plaf.synth.SynthTableUI.paintCells（SynthTableUI.java:581）で
    javax.swing.plaf.synth.SynthTableUI.paint（SynthTableUI.java:365）で
    javax.swing.plaf.synth.SynthTableUI.update（SynthTableUI.java:276）で
    javax.swing.JComponent.paintComponent（JComponent.java:778）で
    javax.swing.JComponent.paint（JComponent.java:1054）で
    javax.swing.JComponent.paintChildren（JComponent.java:887）で
    javax.swing.JComponent.paint（JComponent.java:1063）で
    javax.swing.JViewport.paint（JViewport.java:731）で
    javax.swing.JComponent.paintChildren（JComponent.java:887）で
    javax.swing.JComponent.paint（JComponent.java:1063）で
    javax.swing.JComponent.paintChildren（JComponent.java:887）で
    javax.swing.JComponent.paint（JComponent.java:1063）で
    javax.swing.JComponent.paintToOffscreen（JComponent.java:5221）で
    javax.swing.RepaintManager $ PaintManager.paintDoubleBuffered（RepaintManager.java:1482）で
    javax.swing.RepaintManager $ PaintManager.paint（RepaintManager.java:1413）で
    javax.swing.RepaintManager.paint（RepaintManager.java:1206）で
    javax.swing.JComponent._paintImmediately（JComponent.java:5169）で
    javax.swing.JComponent.paintImmediately（JComponent.java:4980）で
    javax.swing.RepaintManager.paintDirtyRegions（RepaintManager.java:770）で
    javax.swing.RepaintManager.paintDirtyRegions（RepaintManager.java:728）で
    javax.swing.RepaintManager.prePaintDirtyRegions（RepaintManager.java:677）で
    javax.swing.RepaintManager.access $ 700（RepaintManager.java:59）で
    javax.swing.RepaintManager $ ProcessingRunnable.run（RepaintManager.java:1621）で
    java.awt.event.InvocationEvent.dispatch（InvocationEvent.java:251）で
    java.awt.EventQueue.dispatchEventImpl（EventQueue.java:701）で
    java.awt.EventQueue.access $ 000（EventQueue.java:102）で
    java.awt.EventQueue $ 3.run（EventQueue.java:662）で
    java.awt.EventQueue $ 3.run（EventQueue.java:660）で
    java.security.AccessController.doPrivileged（ネイティブメソッド）で
    java.security.ProtectionDomain $ 1.doIntersectionPrivilege（ProtectionDomain.java:76）で
    java.awt.EventQueue.dispatchEvent（EventQueue.java:671）で
    java.awt.EventDispatchThread.pumpOneEventForFilters（EventDispatchThread.java:244）で
    java.awt.EventDispatchThread.pumpEventsForFilter（EventDispatchThread.java:163）で
    java.awt.EventDispatchThread.pumpEventsForHierarchy（EventDispatchThread.java:151）で
    java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:147）で
    java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:139）で
    java.awt.EventDispatchThread.run（EventDispatchThread.java:97）で
スレッド「AWT-EventQueue-0」の例外java.lang.ArrayIndexOutOfBoundsException：14
    javax.swing.JTable $ 1.getValueAt（JTable.java:689）で
    javax.swing.JTable.getValueAt（JTable.java:2720）で
    javax.swing.JTable.prepareRenderer（JTable.java:5718）で
    javax.swing.plaf.synth.SynthTableUI.paintCell（SynthTableUI.java:684）で
    javax.swing.plaf.synth.SynthTableUI.paintCells（SynthTableUI.java:581）で
    javax.swing.plaf.synth.SynthTableUI.paint（SynthTableUI.java:365）で
    javax.swing.plaf.synth.SynthTableUI.update（SynthTableUI.java:276）で
    javax.swing.JComponent.paintComponent（JComponent.java:778）で
    javax.swing.JComponent.paint（JComponent.java:1054）で
    javax.swing.JComponent.paintToOffscreen（JComponent.java:5221）で
    javax.swing.RepaintManager $ PaintManager.paintDoubleBuffered（RepaintManager.java:1482）で
    javax.swing.RepaintManager $ PaintManager.paint（RepaintManager.java:1413）で
    javax.swing.RepaintManager.paint（RepaintManager.java:1206）で
    javax.swing.JComponent.paintForceDoubleBuffered（JComponent.java:1090）で
    javax.swing.JViewport.blitDoubleBuffered（JViewport.java:1598）で
    javax.swing.JViewport.windowBlitPaint（JViewport.java:1559）で
    javax.swing.JViewport.setViewPosition（JViewport.java:1102）で
    javax.swing.plaf.basic.BasicScrollPaneUI $ Handler.hsbStateChanged（BasicScrollPaneUI.java:1087）で
    javax.swing.plaf.basic.BasicScrollPaneUI $ Handler.stateChanged（BasicScrollPaneUI.java:1038）で
    javax.swing.DefaultBoundedRangeModel.fireStateChanged（DefaultBoundedRangeModel.java:364）で
    javax.swing.DefaultBoundedRangeModel.setRangeProperties（DefaultBoundedRangeModel.java:302）で
    javax.swing.DefaultBoundedRangeModel.setValue（DefaultBoundedRangeModel.java:168）で
    javax.swing.JScrollBar.setValue（JScrollBar.java:463）で
    javax.swing.plaf.basic.BasicScrollBarUI $ TrackListener.setValueFrom（BasicScrollBarUI.java:1253）で
    javax.swing.plaf.basic.BasicScrollBarUI $ TrackListener.mouseDragged（BasicScrollBarUI.java:1195）で
    java.awt.Component.processMouseMotionEvent（Component.java:6553）で
    javax.swing.JComponent.processMouseMotionEvent（JComponent.java:3339）で
    java.awt.Component.processEvent（Component.java:6274）で
    java.awt.Container.processEvent（Container.java:2229）で
    java.awt.Component.dispatchEventImpl（Component.java:4861）で
    java.awt.Container.dispatchEventImpl（Container.java:2287）で
    java.awt.Component.dispatchEvent（Component.java:4687）で
    java.awt.LightweightDispatcher.retargetMouseEvent（Container.java:4832）で
    java.awt.LightweightDispatcher.processMouseEvent（Container.java:4509）で
    java.awt.LightweightDispatcher.dispatchEvent（Container.java:4422）で
    java.awt.Container.dispatchEventImpl（Container.java:2273）で
    java.awt.Window.dispatchEventImpl（Window.java:2719）で
    java.awt.Component.dispatchEvent（Component.java:4687）で
    java.awt.EventQueue.dispatchEventImpl（EventQueue.java:703）で
    java.awt.EventQueue.access $ 000（EventQueue.java:102）で
    java.awt.EventQueue $ 3.run（EventQueue.java:662）で
    java.awt.EventQueue $ 3.run（EventQueue.java:660）で
    java.security.AccessController.doPrivileged（ネイティブメソッド）で
    java.security.ProtectionDomain $ 1.doIntersectionPrivilege（ProtectionDomain.java:76）で
    java.security.ProtectionDomain $ 1.doIntersectionPrivilege（ProtectionDomain.java:87）で
    java.awt.EventQueue $ 4.run（EventQueue.java:676）で
    java.awt.EventQueue $ 4.run（EventQueue.java:674）で
    java.security.AccessController.doPrivileged（ネイティブメソッド）で
    java.security.ProtectionDomain $ 1.doIntersectionPrivilege（ProtectionDomain.java:76）で
    java.awt.EventQueue.dispatchEvent（EventQueue.java:673）で
    java.awt.EventDispatchThread.pumpOneEventForFilters（EventDispatchThread.java:244）で
    java.awt.EventDispatchThread.pumpEventsForFilter（EventDispatchThread.java:163）で
    java.awt.EventDispatchThread.pumpEventsForHierarchy（EventDispatchThread.java:151）で
    java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:147）で
    java.awt.EventDispatchThread.pumpEvents（EventDispatchThread.java:139）で
    java.awt.EventDispatchThread.run（EventDispatchThread.java:97）で

なんでそうなの？この問題の解決策はありますか？ありがとう！

ごめんなさい！テーブルを初期化するために使用されるコードは次のとおりです。お役に立てば幸いです。

jp.setLayout(new BorderLayout());
    JTable jt = new JTable(data, column);// data and columns are just 2D and 1D String arrays each
    JTableHeader th = jt.getTableHeader();
    th.setBackground(java.awt.Color.pink);
    th.setEnabled(true);
    jt.setTableHeader(th);
    jt.setEnabled(false);
    jp.add(jt, BorderLayout.CENTER);
    JScrollPane scrollPane = new JScrollPane(jt, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);
    jt.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
    scrollPane.setEnabled(false);
    jp.add(scrollPane, BorderLayout.CENTER);
4

2 に答える 2

5

データ配列にあるよりも多くの列を宣言したと思います。

このコードサンプルは、問題を正確に再現しています。

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;

public class TestTable {

    public JFrame f;
    private JTable table;

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {

            @Override
            public void run() {
                new TestTable().initUI();
            }
        });
    }

    protected void initUI() {
        String[][] data = new String[1][1];
        data[0] = new String[] { "hello" };
        String[] columns = new String[] { "Column-1", "Column-2" };
        table = new JTable(data, columns);
        f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.setSize(300, 300);
        f.setLocationRelativeTo(null);
        f.add(new JScrollPane(table));
        f.setVisible(true);
    }

}

もちろん、解決策は、データ内の列の数を宣言した列の数と一致させることです。また、データ配列の各「行」が正しい数の「列」で初期化されていることを確認する必要があります。

たとえば、次のようにすることができます。

String[][] data = new String[1][18];
data[0] = new String[15]; // <-- This will cause some problems

ここで、配列とは別のデータ構造を使用することをお勧めします。これは、柔軟性が低く、保守が困難になる傾向があるためです。簡単な解決策は、「Model」クラスを作成し、次のような独自のTableModelを作成することです。

import java.util.List;
import java.util.Random;
import java.util.Vector;

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
import javax.swing.table.AbstractTableModel;

public class TestTable {

    public JFrame f;
    private JTable table;

    public class ModelObject {
        private String column0; // Consider using something more explicit than column0,1,...
        private String column1;

        public String getColumn0() {
            return column0;
        }

        public void setColumn0(String column0) {
            this.column0 = column0;
        }

        public String getColumn1() {
            return column1;
        }

        public void setColumn1(String column1) {
            this.column1 = column1;
        }
    }

    private class TableModel extends AbstractTableModel {

        private List<ModelObject> data;

        protected TableModel(List<ModelObject> data) {
            super();
            this.data = data;
        }

        @Override
        public int getRowCount() {
            return data.size();
        }

        @Override
        public String getColumnName(int column) {
            switch (column) {
            case 0:
                return "Header 0";
            case 1:
                return "Header 1";
            }
            System.err.println("Only two columns are known in this table model");
            return "???";
        }

        @Override
        public int getColumnCount() {
            return 2;
        }

        @Override
        public Object getValueAt(int rowIndex, int columnIndex) {
            ModelObject o = data.get(rowIndex);
            switch (columnIndex) {
            case 0:
                return o.getColumn0();
            case 1:
                return o.getColumn1();
            }
            System.err.println("Only two columns are known in this table model");
            return null;
        }

    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {

            @Override
            public void run() {
                new TestTable().initUI();
            }
        });
    }

    protected void initUI() {
        Random r = new Random();
        Vector<ModelObject> data = new Vector<TestTable.ModelObject>();
        for (int i = 0; i < 10; i++) {
            ModelObject o = new ModelObject();
            o.setColumn0("Some stuff in column 0 " + i);
            o.setColumn1("Some other stuff in column 1 " + r.nextInt());
            data.add(o);
        }
        table = new JTable(new TableModel(data));
        f = new JFrame();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.setSize(300, 300);
        f.setLocationRelativeTo(null);
        f.add(new JScrollPane(table));
        f.setVisible(true);
    }

}

ここではすべてが単一のクラスで記述されていますが、もちろん、MVCパターンに正しく従うためにそれらを分離する必要があります。

于 2012-05-24T07:52:00.853 に答える
1

答えは次の行にあります。

スレッド「AWT-EventQueue-0」の例外java.lang.ArrayIndexOutOfBoundsException：14 at

これは、より多くの列があるはずであり、次の列を描画したかったことを認識していることを意味しますが、基になるテーブルモデルにそれほど多くの列がなかったため、できませんでした。

テーブルに18列を指定すると、関連するテーブルモデルも更新する必要があります。テーブルが機能するには、両方が同期している必要があります。

于 2012-05-24T06:22:33.143 に答える