SimoneJava JTable的使用
的有关信息介绍如下：
最近在使用JTable做交易系统的界面，因为之前没有类似经验，感觉做起来比较麻烦。
好在最终都能把想要的效果做出来了，现总结一下经验，供日后查阅参考。
设置单元格的渲染器为复选框，如下：
//设置表格和表头的默认渲染器
simpleTable.setDefaultRenderer(Object.class, simpleTableRender);
simpleTable.getTableHeader().setDefaultRenderer(headerRenderer);
//设置单元格的渲染器
checkBoxRenderer = new CheckBoxRenderer(simpleTable); simpleTable.getColumnModel().getColumn(0).setCellRenderer(checkBoxRenderer);
设置单元格的渲染器和编辑器为下拉框，如下：
simpleTable.getColumnModel().getColumn(3).setCellRenderer(comboBoxRenderer); simpleTable.getColumnModel().getColumn(3).setCellEditor(comboBoxCellEditor);
设置排序方法，如下：
sorter = new TableRowSorter
simpleTable.setRowSorter(sorter);
ArrayList
list.add(new TableRowSorter.SortKey(1, SortOrder.ASCENDING));
sorter.setSortKeys(list);
sorter.sort();
sorter.setSortable(0, false);
设置表头的排序标识按钮，如下：
simpleTable.getTableHeader().addMouseListener(new HeaderMouseListener());
class HeaderMouseListener extends MouseAdapter {
@Override
public void mouseClicked(MouseEvent e) {
JTableHeader h = (JTableHeader) e.getSource();
TableColumnModel columnModel = h.getColumnModel();
TableCellRenderer tcr = h.getDefaultRenderer();
int viewColumn = columnModel.getColumnIndexAtX(e.getX());
if (viewColumn < 0)
return;
int column = columnModel.getColumn(viewColumn).getModelIndex();
if (column != -1 && tcr instanceof LogonStatusContentHeaderRenderer) {
LogonStatusContentHeaderRenderer sbr = (LogonStatusContentHeaderRenderer) tcr;
sbr.setSelectedColumn(column);
}
}
@Override
public void mouseReleased(MouseEvent e) {
((JTableHeader) e.getSource()).repaint();
}
}
设置数据返回值类型，如下：
//返回布尔值
@Override
public Class getColumnClass(int columnIndex) {
if (columnIndex == 0)
return Boolean.class;
else
return super.getColumnClass(columnIndex);
}
//返回Double类型，排序时会按Double类型排序
@Override
public Class getColumnClass(int columnIndex) {
if(columnIndex==2){
return Double.class;
}else
return super.getColumnClass(columnIndex);
}
设置某一列是否可以编辑，如下：
public boolean isCellEditable(int row, int column) {
if (row >= 0) {
SysParamStruct info = localMap.get(String.valueOf(row));
if (info == null) {
System.out.println("info null");
}
if (info != null) {
if (columnsOrder.elementAt(column) == EnumSysParaColumn.VALUE) {
return true;
}
if (columnsOrder.elementAt(column) == EnumSysParaColumn.STATUS) {
return true;
}
}
}
return false;
}
设置列的值，如下：
public Object getValueAt(int row, int column) {
if (row >= 0) {
SysParamStruct info = localMap.get(String.valueOf(row));
if (info == null) {
System.out.println("info null");
}
if (info != null) {
if (columnsOrder.elementAt(column) == EnumSysParaColumn.PARA_NAME) {
return info.getShortDesc();
} else if (columnsOrder.elementAt(column) == EnumSysParaColumn.PARA_DESC) {
return info.getLongDesc();
} else if (columnsOrder.elementAt(column) == EnumSysParaColumn.VALUE) {
return info.getValue();
} else if (columnsOrder.elementAt(column) == EnumSysParaColumn.STATUS) {
return info.getStatus();
}
}
}
return "";
}
使编辑的列值生效，如下：
public void setValueAt (Object value, int row, int column) {
SysParamStruct info = localMap.get(String.valueOf(row));
if (columnsOrder.elementAt(column) == EnumSysParaColumn.VALUE) {
info.setValue((String) value);
localMap.put(String.valueOf(row), info);
}
if (columnsOrder.elementAt(column) == EnumSysParaColumn.STATUS) {
char status = 0;
switch ((StatusType)value) {
case Active :
status = StatusType.Active.getValue();
break;
case Suspended :
status = StatusType.Suspended.getValue();
break;
case Deleted :
status = StatusType.Deleted.getValue();
break;
default :
break;
}
info.setStatus(status);
localMap.put(String.valueOf(row), info);
}
fireTableCellUpdated(row, column);
}
ComboBoxRenderer里面的内容，如下：
@Override
public Component getTableCellRendererComponent(
JTable table,
Object value,
boolean isSelected,
boolean hasFocus,
int row,
int column) {
oddColor = ResManager.getColor("Trade.OrderBook.TableCell.OddColor");
evenColor = ResManager.getColor("Trade.OrderBook.TableCell.EvenColor");
fgColor = ResManager.getColor("Trade.OrderBook.TableCell.textColor");
highlightBgColor = HVResMgr.getColor("Trade.OrderBook.TableCell.HighlightColor");
//set line background color
if ((row % 2) == 0) {
bgColor = oddColor;
}
else {
bgColor = evenColor;
}
// set highlight color
if (isSelected) {
bgColor = highlightBgColor;
}
//calculate the font size
double ratio = 1.0;
if (table instanceof BaseTable) {
ratio = ((BaseTable) table).getRatio();
}
int fontSize = (int) (font.getSize() * ratio);
font = new Font(font.getName(), font.getStyle(), fontSize);
this.comboBox.setBorder(null);
this.comboBox.setBackground(bgColor);
this.comboBox.setForeground(fgColor);
if (column == 3) {
StatusType status = null;
switch ((Character) value) {
case 'A' :
status = StatusType.Active;
break;
case 'S' :
status = StatusType.Suspended;
break;
case 'D' :
status = StatusType.Deleted;
break;
default :
break;
}
this.comboBox.setSelectedItem(status);
}
return this.comboBox;
}
ComboBoxCellEditor里面的内容，如下：
public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
if (column == 3) {
StatusType status = null;
switch ((Character) value) {
case 'A' :
status = StatusType.Active;
break;
case 'S' :
status = StatusType.Suspended;
break;
case 'D' :
status = StatusType.Deleted;
break;
default :
break;
}
this.comboBox.setSelectedItem(status);
}
return this.comboBox;
}
@Override
public Object getCellEditorValue() {
return this.comboBox.getSelectedItem();
}
