JTable的渲染器不改变背景

Question

我使用这下面子类的JTable，不设法改变任何背景颜色池：

@SuppressWarnings("serial") 
    public abstract class GenericConfigurationTable extends JTable { 
    private EditableCellRenderer t = new EditableCellRenderer(); 
    private DefaultCellRenderer d = new DefaultCellRenderer(); 
    protected boolean[] editable; 

    public GenericConfigurationTable(AbstractTableModel m) { 
     this(); 
     this.setModel(m); 
    } 

    public GenericConfigurationTable() { 
     this.changeSelection(0, 0, false, false); 
     this.setBackground(ViewsPreferences.P_TABLE_BACKGROUND_COLOR); 
     this.setShowGrid(false); 
     this.setPreferredScrollableViewportSize(this.getPreferredSize()); 
    } 

    protected void setRenderers() { 
     TableColumnModel u = this.getColumnModel(); 

     for(int i = 0; i < this.getModel().getColumnCount(); i++) { 
      if(editable[i]) 
       u.getColumn(i).setCellRenderer(t); 
      else 
       u.getColumn(i).setCellRenderer(d); 
     } 
    } 

    public class EditableCellRenderer extends JLabel implements TableCellRenderer { 
     public EditableCellRenderer() { 
      this.setFont(ViewsPreferences.SU_EDITABLE_CELL_FONT); 
      this.setForeground(ViewsPreferences.SU_EDITABLE_FOREGROUND_COLOR); 
      this.setBackground(ViewsPreferences.SU_EDITABLE_BACKGROUND_COLOR); 
      setBorder(null); 
      this.setHorizontalAlignment(JLabel.CENTER); 
     } 

     @Override 
     public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) { 
      if(value != null) 
       setText(value.toString()); 
      else 
       setText(""); 

      return this; 
     } 
    } 

    public class DefaultCellRenderer extends JLabel implements TableCellRenderer { 
     public DefaultCellRenderer() { 
      this.setFont(ViewsPreferences.SU_CELL_FONT); 
      this.setForeground(ViewsPreferences.SU_CELL_FOREGROUND_COLOR); 
      this.setBackground(ViewsPreferences.SU_CELL_BACKGROUND_COLOR); 
      setBorder(null); 
      this.setHorizontalAlignment(JLabel.CENTER); 
     } 

     @Override 
     public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) { 
      if(value != null) 
       setText(value.toString()); 
      else 
       setText(""); 
      return this; 
     } 
    } 
} 

所以我认为这是与事实我尝试链接在两个渲染器中渲染任何类型，所以我试着用table.setDefaultRenderer(Type.class, myRenderer)设置渲染器，但是没有任何变化。

下面是使用的表模型的一部分：

public class T extends AbstractTableModel { 
     @SuppressWarnings("rawtypes") 
     private final Class[] columns_class = { String.class, String.class, Integer.class, Integer.class, String.class, Double.class}; 
     private final String[] columns_names = { "Type", "Champs", "HM", "A", "V", "Fc" }; 
     private final String[] row_labels = {"J1", "J2", "J3", "J4", "J5", "J7", "J8", "J9", "J10", "J11", "J100", " ", " ", "JS", "JC"}; 

Answer 1

的JLabel是默认透明所以背景将永远不会被涂漆。

要绘制标签背景，您需要使标签不透明。在您的渲染器的构造函数中，您需要添加：

this.setOpaque(true);