JTableでセルの背景色を変更する

個々のセルに含まれる値に基づいて個々のセルの色を変更するにはどうすればよいですか？JTableでセルの背景色を変更する

ここでは、私が見つけたものに基づいています。

import java.awt.EventQueue; 
import java.awt.event.MouseAdapter; 
import java.awt.event.MouseEvent; 
import javax.swing.JFrame; 
import java.awt.Dimension; 
import javax.swing.JPanel; 
import java.awt.BorderLayout; 
import java.awt.Color; 
import java.awt.Component; 
import javax.swing.border.EmptyBorder; 
import javax.swing.JMenuBar; 
import javax.swing.JMenu; 
import javax.swing.JMenuItem; 
import javax.swing.JButton; 
import javax.swing.JTable; 
import javax.swing.JLabel; 
import javax.swing.table.DefaultTableCellRenderer; 
import javax.swing.table.DefaultTableModel; 
import javax.swing.table.TableCellRenderer; 


public class DriversSeason1 extends JLabel implements TableCellRenderer{ 

private JFrame frameSeason1Drivers; 
static JTable tableSeason1Drivers = new JTable(); 

/** 
* Launch the application. 
*/ 
public static void main(String[] args) { 
    EventQueue.invokeLater(new Runnable() { 
     public void run() { 
      try { 
       DriversSeason1 window = new DriversSeason1(); 
       window.frameSeason1Drivers.setVisible(true); 
      } catch (Exception e) { 
       e.printStackTrace(); 
      } 
     } 
    }); 
    MyRenderer myRenderer = new MyRenderer(); 
    tableSeason1Drivers.setDefaultRenderer(Object.class, myRenderer); 
} 

/** 
* Create the application. 
*/ 
public DriversSeason1() { 
    initialize(); 
} 

/** 
* Initialize the contents of the frame. 
*/ 
private void initialize() { 
    frameSeason1Drivers = new JFrame(); 
    frameSeason1Drivers.setBounds(100, 100, 780, 480); 
    frameSeason1Drivers.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 

    JPanel panelSeason1DriversFull = new JPanel(); 
    panelSeason1DriversFull.setBorder(new EmptyBorder(5, 5, 5, 5)); 
    frameSeason1Drivers.getContentPane().add(panelSeason1DriversFull, BorderLayout.CENTER); 
    panelSeason1DriversFull.setLayout(new BorderLayout(0, 0)); 

    JPanel panelSeason1Drivers = new JPanel(); 
    panelSeason1DriversFull.add(panelSeason1Drivers, BorderLayout.CENTER); 
    panelSeason1Drivers.setLayout(new BorderLayout(0, 0)); 

    tableSeason1Drivers = new JTable(); 
    tableSeason1Drivers.setBackground(Color.WHITE); 
    tableSeason1Drivers.setModel(new DefaultTableModel(
     new Object[][] { 
      {"Pos", null, null, null, null, null, null, null, null, null, null, "", null, null, null, null, null, null, null, null, null, null, null, null, null, null}, 
      {" 1", null, null, null, null, null, null, null, null, null, null, "", null, null, null, null, null, null, null, null, null, null, null, null, null, null}, 
      {" 2", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null}, 
      {" 3", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null}, 
      {" 4", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null}, 
      {" 5", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null}, 
      {" 6", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null}, 
      {" 7", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null}, 
      {" 8", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, "", null, null, null, null}, 
      {" 9", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null}, 
      {"10", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null}, 
      {"11", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null}, 
      {"12", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null}, 
      {"13", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null}, 
      {"14", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null}, 
      {"15", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null}, 
      {"16", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null}, 
      {"17", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null}, 
      {"18", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null}, 
      {"19", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null}, 
      {"20", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null}, 
      {"21", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null}, 
      {"22", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null}, 
      {"Pos", null, null, null, null, null, null, null, null, null, null, "", null, null, null, null, null, null, null, null, null, null, null, null, null, null}, 
     }, 
     new String[] { 
      "New column", "New column", "New column", "New column", "New column", "New column", "New column", "New column", "New column", "New column", "New column", "New column", "New column", "New column", "New column", "New column", "New column", "New column", "New column", "New column", "New column", "New column", "New column", "New column", "New column", "New column" 
     } 
    )); 
    tableSeason1Drivers.getColumnModel().getColumn(0).setPreferredWidth(21); 
    tableSeason1Drivers.getColumnModel().getColumn(1).setPreferredWidth(91); 
    tableSeason1Drivers.getColumnModel().getColumn(2).setPreferredWidth(23); 
    tableSeason1Drivers.getColumnModel().getColumn(3).setPreferredWidth(23); 
    tableSeason1Drivers.getColumnModel().getColumn(4).setPreferredWidth(23); 
    tableSeason1Drivers.getColumnModel().getColumn(5).setPreferredWidth(23); 
    tableSeason1Drivers.getColumnModel().getColumn(6).setPreferredWidth(23); 
    tableSeason1Drivers.getColumnModel().getColumn(7).setPreferredWidth(23); 
    tableSeason1Drivers.getColumnModel().getColumn(8).setPreferredWidth(23); 
    tableSeason1Drivers.getColumnModel().getColumn(9).setPreferredWidth(23); 
    tableSeason1Drivers.getColumnModel().getColumn(10).setPreferredWidth(23); 
    tableSeason1Drivers.getColumnModel().getColumn(11).setPreferredWidth(23); 
    tableSeason1Drivers.getColumnModel().getColumn(12).setPreferredWidth(23); 
    tableSeason1Drivers.getColumnModel().getColumn(13).setPreferredWidth(23); 
    tableSeason1Drivers.getColumnModel().getColumn(14).setPreferredWidth(23); 
    tableSeason1Drivers.getColumnModel().getColumn(15).setPreferredWidth(23); 
    tableSeason1Drivers.getColumnModel().getColumn(16).setPreferredWidth(23); 
    tableSeason1Drivers.getColumnModel().getColumn(17).setPreferredWidth(23); 
    tableSeason1Drivers.getColumnModel().getColumn(18).setPreferredWidth(23); 
    tableSeason1Drivers.getColumnModel().getColumn(19).setPreferredWidth(23); 
    tableSeason1Drivers.getColumnModel().getColumn(20).setPreferredWidth(23); 
    tableSeason1Drivers.getColumnModel().getColumn(21).setPreferredWidth(23); 
    tableSeason1Drivers.getColumnModel().getColumn(22).setPreferredWidth(23); 
    tableSeason1Drivers.getColumnModel().getColumn(23).setPreferredWidth(35); 
    tableSeason1Drivers.getColumnModel().getColumn(24).setPreferredWidth(42); 
    tableSeason1Drivers.getColumnModel().getColumn(25).setPreferredWidth(34); 
    panelSeason1Drivers.add(tableSeason1Drivers, BorderLayout.CENTER); 

    JMenuBar menuBar = new JMenuBar(); 
    panelSeason1DriversFull.add(menuBar, BorderLayout.NORTH); 

    JMenu menuDrivers = new JMenu("Drivers Standings"); 
    menuBar.add(menuDrivers); 

    JMenuItem menuItemSeason1 = new JMenuItem("Season 1"); 
    menuDrivers.add(menuItemSeason1); 

    JMenuItem menuItemSeason2 = new JMenuItem("Season 2"); 
    menuDrivers.add(menuItemSeason2); 

    JMenuItem menuItemSeason3 = new JMenuItem("Season 3"); 
    menuDrivers.add(menuItemSeason3); 

    JMenuItem menuItemSeason4 = new JMenuItem("Season 4"); 
    menuDrivers.add(menuItemSeason4); 

    JMenuItem menuItemSeason5 = new JMenuItem("Season 5"); 
    menuDrivers.add(menuItemSeason5); 

    JMenuItem menuItemSeason6 = new JMenuItem("Season 6"); 
    menuDrivers.add(menuItemSeason6); 

    JMenuItem menuItemSeason7 = new JMenuItem("Season 7"); 
    menuDrivers.add(menuItemSeason7); 

    JMenuItem menuItemSeason8 = new JMenuItem("Season 8"); 
    menuDrivers.add(menuItemSeason8); 

    JMenuItem menuItemSeason9 = new JMenuItem("Season 9"); 
    menuDrivers.add(menuItemSeason9); 

    JMenuItem menuItemSeason10 = new JMenuItem("Season 10"); 
    menuDrivers.add(menuItemSeason10); 

    JMenu menuConstructors = new JMenu("Constructors Standings"); 
    menuBar.add(menuConstructors); 

    JMenuItem menuItemSeason1Con = new JMenuItem("Season1"); 
    menuConstructors.add(menuItemSeason1Con); 

    JMenuItem menuItemSeason2Con = new JMenuItem("Season 2"); 
    menuConstructors.add(menuItemSeason2Con); 

    JMenuItem menuItemSeason3Con = new JMenuItem("Season 3"); 
    menuConstructors.add(menuItemSeason3Con); 

    JMenuItem menuItemSeason4Con = new JMenuItem("Season 4"); 
    menuConstructors.add(menuItemSeason4Con); 

    JMenuItem menuItemSeason5Con = new JMenuItem("Season 5"); 
    menuConstructors.add(menuItemSeason5Con); 

    JMenuItem menuItemSeason6Con = new JMenuItem("Season 6"); 
    menuConstructors.add(menuItemSeason6Con); 

    JMenuItem menuItemSeason7Con = new JMenuItem("Season 7"); 
    menuConstructors.add(menuItemSeason7Con); 

    JMenuItem menuItemSeason8Con = new JMenuItem("Season 8"); 
    menuConstructors.add(menuItemSeason8Con); 

    JMenuItem menuItemSeason9Con = new JMenuItem("Season 9"); 
    menuConstructors.add(menuItemSeason9Con); 

    JMenuItem menuItemSeason10Con = new JMenuItem("Season 10"); 
    menuConstructors.add(menuItemSeason10Con); 

    JButton btnRacingRecord = new JButton("Racing Record"); 
    menuBar.add(btnRacingRecord); 

    JButton btnStats = new JButton("Stats"); 
    menuBar.add(btnStats); 

    JButton btnRaceInput = new JButton("Race Input"); 
    menuBar.add(btnRaceInput); 




} 

@Override 
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, 
     int row, int column) { 
    // TODO Auto-generated method stub 
    return null; 
} 
}

あなたはDriversSeason1前に、表にレンダラを追加しようとしているので、次にHERESに背景色

import java.awt.Color; 
import java.awt.Component; 
import javax.swing.JTable; 
import javax.swing.table.DefaultTableCellRenderer; 

public class MyRenderer extends DefaultTableCellRenderer 
{ 
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) 
{ 
Component c = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column); 

if (((int)table.getValueAt(row, column)) == 1) 
{ 
    System.out.println("hi"); 
} 
else 
{ 
    c.setBackground(table.getBackground()); 
} 
return c; 
} 

}

出典

2016-10-26 lemonme2

レンダリングコンポーネントは、デフォルトでは「JLabel」です。 –

[MCVE]または[ショート、自己完結型、正しい例]（http://www.sscce.org/）を投稿すると、すぐに役立つように、ラベルに背景色が表示されません。。トリムするクラフトの第1の例： 'tableSeason1Drivers.getColumnModel（）。getColumn（0）.setPreferredWidth（21）;'これはバックグラウンドカラーとは関係ありません。 2番目の例 - テーブルは2行2列しか必要ないようです。 –

public static void main(String[] args) { 
    EventQueue.invokeLater(new Runnable() { 
     public void run() { 
      try { 
       DriversSeason1 window = new DriversSeason1(); 
       window.frameSeason1Drivers.setVisible(true); 
      } catch (Exception e) { 
       e.printStackTrace(); 
      } 
     } 
    }); 
    MyRenderer myRenderer = new MyRenderer(); 
    tableSeason1Drivers.setDefaultRenderer(Object.class, myRenderer); 
}

を変更する必要がありレンダラークラスがメインメソッドは別のスレッドで実行されますクラスが作成されます。その後

イベントディスパッチスレッド上のコードは、あなたのDriverSeason1クラスが作成され実行され、あなたがそのすべてのカスタムレンダラーが失われ、新規のJTableを作成します。

解決策は簡単です。テーブルを作成するときに、レンダラーをテーブルに追加します。

また、あなたはDriversSeason1クラスはJLabelのを拡張し、TableCellRendererをを実装するべきではありません。すべてのコードを取り除く。

最後に、あなたはこれらの問題を解決するとき、あなたはまだ明らかであるレンダラに誤りがあります。 Stringオブジェクトとしてデータをロードするので、オブジェクトとIntegerを作成することはできません。整数比較ではなく、コード内で文字列比較を行う必要があります。既存のコードと効果的なJavaのの設計の改善：あなたはそれを改善する方法がわからない場合は

出典

2016-10-26 02:19:47 camickr

-1

あなたのコードは悪臭がたくさんあり、私はあなたがリファクタリングのようないくつかの本を読むことをお勧めします。
とにかく、私はそれを作った、それがあなたが望むものかどうかを確認してください。

package self.examples; 

import java.awt.BorderLayout; 
import java.awt.Color; 
import java.awt.Component; 
import java.awt.EventQueue; 

import javax.swing.JButton; 
import javax.swing.JFrame; 
import javax.swing.JLabel; 
import javax.swing.JMenu; 
import javax.swing.JMenuBar; 
import javax.swing.JMenuItem; 
import javax.swing.JPanel; 
import javax.swing.JTable; 
import javax.swing.border.EmptyBorder; 
import javax.swing.table.DefaultTableCellRenderer; 
import javax.swing.table.DefaultTableModel; 
import javax.swing.table.TableCellRenderer; 

public class DriversSeason1 extends JLabel implements TableCellRenderer { 

    private JFrame frameSeason1Drivers; 
    static JTable tableSeason1Drivers = new JTable(); 

    /** 
    * Launch the application. 
    */ 
    public static void main(String[] args) { 
     EventQueue.invokeLater(new Runnable() { 
      public void run() { 
       try { 
        DriversSeason1 window = new DriversSeason1(); 
        window.frameSeason1Drivers.setVisible(true); 
       } catch (Exception e) { 
        e.printStackTrace(); 
       } 
      } 
     }); 

    } 

    /** 
    * Create the application. 
    */ 
    public DriversSeason1() { 
     initialize(); 
    } 

    /** 
    * Initialize the contents of the frame. 
    */ 
    private void initialize() { 
     frameSeason1Drivers = new JFrame(); 
     frameSeason1Drivers.setBounds(100, 100, 780, 480); 
     frameSeason1Drivers.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 

     JPanel panelSeason1DriversFull = new JPanel(); 
     panelSeason1DriversFull.setBorder(new EmptyBorder(5, 5, 5, 5)); 
     frameSeason1Drivers.getContentPane().add(panelSeason1DriversFull, BorderLayout.CENTER); 
     panelSeason1DriversFull.setLayout(new BorderLayout(0, 0)); 

     JPanel panelSeason1Drivers = new JPanel(); 
     panelSeason1DriversFull.add(panelSeason1Drivers, BorderLayout.CENTER); 
     panelSeason1Drivers.setLayout(new BorderLayout(0, 0)); 

     tableSeason1Drivers = new JTable(); 
     tableSeason1Drivers.setBackground(Color.WHITE); 

     MyRenderer myRenderer = new MyRenderer(); 
     tableSeason1Drivers.setDefaultRenderer(Object.class, myRenderer); 

     tableSeason1Drivers.setModel(new DefaultTableModel(
       new Object[][] { 
         { "Pos", null, 1, null, null, null, null, null, null, null, null, "", null, null, null, null, 
           null, null, null, null, null, null, null, null, null, null }, 
         { " 1", null, null, null, null, null, null, null, null, null, null, "", null, null, null, null, 
           null, null, null, null, null, null, null, null, null, null }, 
         { " 2", null, null, null, null, null, null, null, null, null, null, null, null, null, null, 
           null, null, null, null, null, null, null, null, null, null, null }, 
         { " 3", null, null, null, null, null, 1, null, null, null, null, null, null, null, null, null, 
           null, null, null, null, null, null, null, null, null, null }, 
         { " 4", null, null, 1, null, null, null, null, null, null, null, null, null, null, null, null, 
           null, null, null, null, null, null, null, null, null, null }, 
         { " 5", null, null, null, null, null, null, null, null, null, null, null, null, null, null, 
           null, null, null, null, null, null, null, null, null, null, null }, 
         { " 6", null, null, null, null, null, null, null, null, null, null, null, null, null, null, 
           null, null, null, null, null, null, null, null, null, null, null }, 
         { " 7", null, null, null, null, null, null, null, null, null, null, null, null, null, null, 
           null, null, null, null, null, null, null, null, null, null, null }, 
         { " 8", null, null, null, null, null, null, null, null, null, null, null, null, null, null, 
           null, null, null, null, null, null, "", null, null, null, null }, 
         { " 9", null, null, null, null, null, null, null, null, null, null, null, null, null, null, 
           null, null, null, null, null, null, null, null, null, null, null }, 
         { "10", null, null, null, null, null, null, null, null, null, null, null, null, null, null, 
           null, null, null, null, null, null, null, null, null, null, null }, 
         { "11", null, null, null, null, null, null, null, null, null, null, null, null, null, null, 
           null, null, null, null, null, null, null, null, null, null, null }, 
         { "12", null, null, null, null, null, null, null, null, null, null, null, null, null, null, 
           null, null, null, null, null, null, null, null, null, null, null }, 
         { "13", null, null, null, null, null, null, null, null, null, null, null, null, null, null, 
           null, null, null, null, null, null, null, null, null, null, null }, 
         { "14", null, null, null, null, null, null, null, null, null, null, null, null, null, null, 
           null, null, null, null, null, null, null, null, null, null, null }, 
         { "15", null, null, null, null, null, null, null, null, null, null, null, null, null, null, 
           null, null, null, null, null, null, null, null, null, null, null }, 
         { "16", null, null, null, null, null, null, null, null, null, null, null, null, null, null, 
           null, null, null, null, null, null, null, null, null, null, null }, 
         { "17", null, null, null, null, null, null, null, null, null, null, null, null, null, null, 
           null, null, null, null, null, null, null, null, null, null, null }, 
         { "18", null, null, null, null, null, null, null, null, null, null, null, null, null, null, 
           null, null, null, null, null, null, null, null, null, null, null }, 
         { "19", null, null, null, null, null, null, null, null, null, null, null, null, null, null, 
           null, null, null, null, null, null, null, null, null, null, null }, 
         { "20", null, null, null, null, null, null, null, null, null, null, null, null, null, null, 
           null, null, null, null, null, null, null, null, null, null, null }, 
         { "21", null, null, null, null, null, null, null, null, null, null, null, null, null, null, 
           null, null, null, null, null, null, null, null, null, null, null }, 
         { "22", null, null, null, null, null, null, null, null, null, null, null, null, null, null, 
           null, null, null, null, null, null, null, null, null, null, null }, 
         { "Pos", null, null, null, null, null, null, null, null, null, null, "", null, null, null, null, 
           null, null, null, null, null, null, null, null, null, null }, }, 
       new String[] { "New column", "New column", "New column", "New column", "New column", "New column", 
         "New column", "New column", "New column", "New column", "New column", "New column", 
         "New column", "New column", "New column", "New column", "New column", "New column", 
         "New column", "New column", "New column", "New column", "New column", "New column", 
         "New column", "New column" })); 
     tableSeason1Drivers.getColumnModel().getColumn(0).setPreferredWidth(21); 
     tableSeason1Drivers.getColumnModel().getColumn(1).setPreferredWidth(91); 
     tableSeason1Drivers.getColumnModel().getColumn(2).setPreferredWidth(23); 
     tableSeason1Drivers.getColumnModel().getColumn(3).setPreferredWidth(23); 
     tableSeason1Drivers.getColumnModel().getColumn(4).setPreferredWidth(23); 
     tableSeason1Drivers.getColumnModel().getColumn(5).setPreferredWidth(23); 
     tableSeason1Drivers.getColumnModel().getColumn(6).setPreferredWidth(23); 
     tableSeason1Drivers.getColumnModel().getColumn(7).setPreferredWidth(23); 
     tableSeason1Drivers.getColumnModel().getColumn(8).setPreferredWidth(23); 
     tableSeason1Drivers.getColumnModel().getColumn(9).setPreferredWidth(23); 
     tableSeason1Drivers.getColumnModel().getColumn(10).setPreferredWidth(23); 
     tableSeason1Drivers.getColumnModel().getColumn(11).setPreferredWidth(23); 
     tableSeason1Drivers.getColumnModel().getColumn(12).setPreferredWidth(23); 
     tableSeason1Drivers.getColumnModel().getColumn(13).setPreferredWidth(23); 
     tableSeason1Drivers.getColumnModel().getColumn(14).setPreferredWidth(23); 
     tableSeason1Drivers.getColumnModel().getColumn(15).setPreferredWidth(23); 
     tableSeason1Drivers.getColumnModel().getColumn(16).setPreferredWidth(23); 
     tableSeason1Drivers.getColumnModel().getColumn(17).setPreferredWidth(23); 
     tableSeason1Drivers.getColumnModel().getColumn(18).setPreferredWidth(23); 
     tableSeason1Drivers.getColumnModel().getColumn(19).setPreferredWidth(23); 
     tableSeason1Drivers.getColumnModel().getColumn(20).setPreferredWidth(23); 
     tableSeason1Drivers.getColumnModel().getColumn(21).setPreferredWidth(23); 
     tableSeason1Drivers.getColumnModel().getColumn(22).setPreferredWidth(23); 
     tableSeason1Drivers.getColumnModel().getColumn(23).setPreferredWidth(35); 
     tableSeason1Drivers.getColumnModel().getColumn(24).setPreferredWidth(42); 
     tableSeason1Drivers.getColumnModel().getColumn(25).setPreferredWidth(34); 
     panelSeason1Drivers.add(tableSeason1Drivers, BorderLayout.CENTER); 

     JMenuBar menuBar = new JMenuBar(); 
     panelSeason1DriversFull.add(menuBar, BorderLayout.NORTH); 

     JMenu menuDrivers = new JMenu("Drivers Standings"); 
     menuBar.add(menuDrivers); 

     JMenuItem menuItemSeason1 = new JMenuItem("Season 1"); 
     menuDrivers.add(menuItemSeason1); 

     JMenuItem menuItemSeason2 = new JMenuItem("Season 2"); 
     menuDrivers.add(menuItemSeason2); 

     JMenuItem menuItemSeason3 = new JMenuItem("Season 3"); 
     menuDrivers.add(menuItemSeason3); 

     JMenuItem menuItemSeason4 = new JMenuItem("Season 4"); 
     menuDrivers.add(menuItemSeason4); 

     JMenuItem menuItemSeason5 = new JMenuItem("Season 5"); 
     menuDrivers.add(menuItemSeason5); 

     JMenuItem menuItemSeason6 = new JMenuItem("Season 6"); 
     menuDrivers.add(menuItemSeason6); 

     JMenuItem menuItemSeason7 = new JMenuItem("Season 7"); 
     menuDrivers.add(menuItemSeason7); 

     JMenuItem menuItemSeason8 = new JMenuItem("Season 8"); 
     menuDrivers.add(menuItemSeason8); 

     JMenuItem menuItemSeason9 = new JMenuItem("Season 9"); 
     menuDrivers.add(menuItemSeason9); 

     JMenuItem menuItemSeason10 = new JMenuItem("Season 10"); 
     menuDrivers.add(menuItemSeason10); 

     JMenu menuConstructors = new JMenu("Constructors Standings"); 
     menuBar.add(menuConstructors); 

     JMenuItem menuItemSeason1Con = new JMenuItem("Season1"); 
     menuConstructors.add(menuItemSeason1Con); 

     JMenuItem menuItemSeason2Con = new JMenuItem("Season 2"); 
     menuConstructors.add(menuItemSeason2Con); 

     JMenuItem menuItemSeason3Con = new JMenuItem("Season 3"); 
     menuConstructors.add(menuItemSeason3Con); 

     JMenuItem menuItemSeason4Con = new JMenuItem("Season 4"); 
     menuConstructors.add(menuItemSeason4Con); 

     JMenuItem menuItemSeason5Con = new JMenuItem("Season 5"); 
     menuConstructors.add(menuItemSeason5Con); 

     JMenuItem menuItemSeason6Con = new JMenuItem("Season 6"); 
     menuConstructors.add(menuItemSeason6Con); 

     JMenuItem menuItemSeason7Con = new JMenuItem("Season 7"); 
     menuConstructors.add(menuItemSeason7Con); 

     JMenuItem menuItemSeason8Con = new JMenuItem("Season 8"); 
     menuConstructors.add(menuItemSeason8Con); 

     JMenuItem menuItemSeason9Con = new JMenuItem("Season 9"); 
     menuConstructors.add(menuItemSeason9Con); 

     JMenuItem menuItemSeason10Con = new JMenuItem("Season 10"); 
     menuConstructors.add(menuItemSeason10Con); 

     JButton btnRacingRecord = new JButton("Racing Record"); 
     menuBar.add(btnRacingRecord); 

     JButton btnStats = new JButton("Stats"); 
     menuBar.add(btnStats); 

     JButton btnRaceInput = new JButton("Race Input"); 
     menuBar.add(btnRaceInput); 

    } 

    @Override 
    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, 
      int row, int column) { 
     // TODO Auto-generated method stub 
     return null; 
    } 

    class MyRenderer extends DefaultTableCellRenderer { 
     public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, 
       int row, int column) { 
      Component c = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column); 

      System.out.println(table.getValueAt(row, column)); 

      if ("1".equals(String.valueOf(table.getValueAt(row, column)))) { 
       System.out.println("hi"); 
       c.setBackground(Color.YELLOW); 
      } else { 
       c.setBackground(Color.RED); 
      } 
      return c; 
     } 

    } 
}

出典

2016-10-26 02:30:03 Jason

（1-）、答えはそれを動作させるためのコードの投稿ではありません。 OPがそれを修正できるように何が間違っているかについて説明します。 200行のコードを見ると、何が変更されたのか、なぜ変わったのかは明らかではありません。 – camickr

同意します！学んだ教訓。ありがとう。 – Jason

JTableでセルの背景色を変更する

答えて

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