怎么在Jtable中的同一列的不同的jcomboBox

[heromenyue]

我现在有一个例子，这个例子实现的功能是在同一列中添加的是相同的jComboBox,例子如下：
import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.GridLayout;
public class TableRenderDemo extends JPanel {
private boolean DEBUG = false;

public TableRenderDemo() {
super(new GridLayout(1,0));

JTable table = new JTable(new MyTableModel());
table.setPreferredScrollableViewportSize(new Dimension(500, 70));

//Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(table);

//Set up column sizes.
initColumnSizes(table);

//Fiddle with the Sport column's cell editors/renderers.
setUpSportColumn(table, table.getColumnModel().getColumn(2));

//Add the scroll pane to this panel.
add(scrollPane);
}

private void initColumnSizes(JTable table) {
MyTableModel model = (MyTableModel)table.getModel();
TableColumn column = null;
Component comp = null;
int headerWidth = 0;
int cellWidth = 0;
Object[] longValues = model.longValues;
TableCellRenderer headerRenderer =
table.getTableHeader().getDefaultRenderer();

for (int i = 0; i < 5; i++) {
column = table.getColumnModel().getColumn(i);

comp = headerRenderer.getTableCellRendererComponent(
null, column.getHeaderValue(),
false, false, 0, 0);
headerWidth = comp.getPreferredSize().width;

comp = table.getDefaultRenderer(model.getColumnClass(i)).
getTableCellRendererComponent(
table, longValues[i],
false, false, 0, i);
cellWidth = comp.getPreferredSize().width;

if (DEBUG) {
System.out.println("Initializing width of column "
+ i + ". "
+ "headerWidth = " + headerWidth
+ "; cellWidth = " + cellWidth);
}

column.setPreferredWidth(Math.max(headerWidth, cellWidth));
}
}

public void setUpSportColumn(JTable table,
TableColumn sportColumn) {
//Set up the editor for the sport cells.
JComboBox comboBox = new JComboBox();
comboBox.addItem("Snowboarding");
comboBox.addItem("Rowing");
comboBox.addItem("Knitting");
comboBox.addItem("Speed reading");
comboBox.addItem("Pool");
comboBox.addItem("None of the above");
sportColumn.setCellEditor(new DefaultCellEditor(comboBox));

//Set up tool tips for the sport cells.
DefaultTableCellRenderer renderer =
new DefaultTableCellRenderer();
renderer.setToolTipText("Click for combo box");
sportColumn.setCellRenderer(renderer);
}

class MyTableModel extends AbstractTableModel {
private String[] columnNames = {"First Name",
"Last Name",
"Sport",
"# of Years",
"Vegetarian"};
private Object[][] data = {
{"Mary", "Campione",
"Snowboarding", new Integer(5), new Boolean(false)},
{"Alison", "Huml",
"Rowing", new Integer(3), new Boolean(true)},
{"Kathy", "Walrath",
"Knitting", new Integer(2), new Boolean(false)},
{"Sharon", "Zakhour",
"Speed reading", new Integer(20), new Boolean(true)},
{"Philip", "Milne",
"Pool", new Integer(10), new Boolean(false)}
};

public final Object[] longValues = {"Sharon", "Campione",
"None of the above",
new Integer(20), Boolean.TRUE};

public int getColumnCount() {
return columnNames.length;
}

public int getRowCount() {
return data.length;
}

public String getColumnName(int col) {
return columnNames[col];
}

public Object getValueAt(int row, int col) {
return data[row][col];
}

public Class getColumnClass(int c) {
return getValueAt(0, c).getClass();
}
public boolean isCellEditable(int row, int col) {
//Note that the data/cell address is constant,
//no matter where the cell appears onscreen.
if (col < 2) {
return false;
} else {
return true;
}
}
public void setValueAt(Object value, int row, int col) {
if (DEBUG) {
System.out.println("Setting value at " + row + "," + col
+ " to " + value
+ " (an instance of "
+ value.getClass() + ")");
}

data[row][col] = value;
fireTableCellUpdated(row, col);

if (DEBUG) {
System.out.println("New value of data:");
printDebugData();
}
}

private void printDebugData() {
int numRows = getRowCount();
int numCols = getColumnCount();

for (int i=0; i < numRows; i++) {
System.out.print(" row " + i + ":");
for (int j=0; j < numCols; j++) {
System.out.print(" " + data[i][j]);
}
System.out.println();
}
System.out.println("--------------------------");
}
}
private static void createAndShowGUI() {
//Create and set up the window.
JFrame frame = new JFrame("TableRenderDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

//Create and set up the content pane.
TableRenderDemo newContentPane = new TableRenderDemo();
newContentPane.setOpaque(true); //content panes must be opaque
frame.setContentPane(newContentPane);

//Display the window.
frame.pack();
frame.setVisible(true);
}

public static void main(String[] args) {
//Schedule a job for the event-dispatching thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}

[zwgs1985]

import java.awt.Component;
import java.awt.Dimension;
import java.awt.GridLayout;

import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.DefaultTableCellRenderer;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;

public class TableRenderDemo extends JPanel {
private boolean DEBUG = false;

public TableRenderDemo() {
super(new GridLayout(1, 0));

JTable table = new M_Table(new MyTableModel());
table.setPreferredScrollableViewportSize(new Dimension(500, 70));

// Create the scroll pane and add the table to it.
JScrollPane scrollPane = new JScrollPane(table);

// Set up column sizes.
initColumnSizes(table);

// Fiddle with the Sport column's cell editors/renderers.
setUpSportColumn(table, table.getColumnModel().getColumn(2));

// Add the scroll pane to this panel.
add(scrollPane);
}

class M_Table extends JTable {

public M_Table(MyTableModel model) {
super(model);
}

public TableCellEditor getCellEditor(int row, int column) {
if (column == 2) {
return new DefaultCellEditor(this.getTableCombo(row));
} else {
return super.getCellEditor(row, column);
}
}

private JComboBox getTableCombo(int row) {
/**
* your logic
*/
if (row == 0) {
return new JComboBox(new Object[]{"0", "1" });
} else if (row == 1) {
return new JComboBox(new Object[]{"1", "2" });
} else {
return new JComboBox(new Object[]{"else", "else" });
}
}
}

private void initColumnSizes(JTable table) {
MyTableModel model = (MyTableModel) table.getModel();
TableColumn column = null;
Component comp = null;
int headerWidth = 0;
int cellWidth = 0;
Object[] longValues = model.longValues;
TableCellRenderer headerRenderer = table.getTableHeader().getDefaultRenderer();

for (int i = 0; i < 5; i++) {
column = table.getColumnModel().getColumn(i);

comp =
headerRenderer.getTableCellRendererComponent(
null,
column.getHeaderValue(),
false,
false,
0,
0);
headerWidth = comp.getPreferredSize().width;

comp =
table
.getDefaultRenderer(model.getColumnClass(i))
.getTableCellRendererComponent(table, longValues[i], false, false, 0, i);
cellWidth = comp.getPreferredSize().width;

if (DEBUG) {
System.out.println("Initializing width of column "
+ i
+ ". "
+ "headerWidth = "
+ headerWidth
+ "; cellWidth = "
+ cellWidth);
}

column.setPreferredWidth(Math.max(headerWidth, cellWidth));
}
}

public void setUpSportColumn(JTable table, TableColumn sportColumn) {
// Set up the editor for the sport cells.
// JComboBox comboBox = new JComboBox();
// comboBox.addItem("Snowboarding");
// comboBox.addItem("Rowing");
// comboBox.addItem("Knitting");
// comboBox.addItem("Speed reading");
// comboBox.addItem("Pool");
// comboBox.addItem("None of the above");
// sportColumn.setCellEditor(new DefaultCellEditor(comboBox));

// Set up tool tips for the sport cells.
DefaultTableCellRenderer renderer = new DefaultTableCellRenderer();
renderer.setToolTipText("Click for combo box");
sportColumn.setCellRenderer(renderer);
}

class MyTableModel extends AbstractTableModel {
private String[] columnNames =
{"First Name", "Last Name", "Sport", "# of Years", "Vegetarian" };

private Object[][] data =
{
{"Mary", "Campione", "0", new Integer(5), new Boolean(false) },
{"Alison", "Huml", "1", new Integer(3), new Boolean(true) },
{"Kathy", "Walrath", "else", new Integer(2), new Boolean(false) },
{"Sharon", "Zakhour", "else", new Integer(20), new Boolean(true) },
{"Philip", "Milne", "else", new Integer(10), new Boolean(false) } };

public final Object[] longValues =
{"Sharon", "Campione", "None of the above", new Integer(20), Boolean.TRUE };

public int getColumnCount() {
return columnNames.length;
}

public int getRowCount() {
return data.length;
}

public String getColumnName(int col) {
return columnNames[col];
}

public Object getValueAt(int row, int col) {
return data[row][col];
}

public Class getColumnClass(int c) {
return getValueAt(0, c).getClass();
}

public boolean isCellEditable(int row, int col) {
// Note that the data/cell address is constant,
// no matter where the cell appears onscreen.
if (col < 2) {
return false;
} else {
return true;
}
}

public void setValueAt(Object value, int row, int col) {
if (DEBUG) {
System.out.println("Setting value at "
+ row
+ ","
+ col
+ " to "
+ value
+ " (an instance of "
+ value.getClass()
+ ")");
}

data[row][col] = value;
fireTableCellUpdated(row, col);

if (DEBUG) {
System.out.println("New value of data:");
printDebugData();
}
}

private void printDebugData() {
int numRows = getRowCount();
int numCols = getColumnCount();

for (int i = 0; i < numRows; i++) {
System.out.print(" row " + i + ":");
for (int j = 0; j < numCols; j++) {
System.out.print(" " + data[i][j]);
}
System.out.println();
}
System.out.println("--------------------------");
}
}

private static void createAndShowGUI() {
// Create and set up the window.
JFrame frame = new JFrame("TableRenderDemo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

// Create and set up the content pane.
TableRenderDemo newContentPane = new TableRenderDemo();
newContentPane.setOpaque(true); // content panes must be opaque
frame.setContentPane(newContentPane);

// Display the window.
frame.pack();
frame.setVisible(true);
}

public static void main(String[] args) {
// Schedule a job for the event-dispatching thread:
// creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
createAndShowGUI();
}
});
}
}

不知道你要的是不是这个效果

[horizonlyhw]

用不同的celleditior 精確到每一個格子 就行了

[shengli_liao]

靠,用得着这么复杂么？
设置不同的ComboxModel就好了