我想在有人点击一个单元格时执行操作。打开另一个gui例如。但是如何使单元格可点击但是不可编辑?这些是sql查询的结果。我无法设法使表无法编辑。我需要听众吗?如果是,我应该把它放在哪里?
这是我的代码:
public class AllResultsFromDB extends JFrame
{
GUI ins = new GUI();
public AllResultsFromDB(GUI x)
{
Vector columnNames = new Vector();
Vector data = new Vector();
this.ins = x;
try
{
// Initializing GUI class in order to call getSelectedTable() method.
// GUI ins = new GUI();
//System.out.println(ins.getSelectedTable());
Login sgui = new Login();
String dburl = "jdbc:oracle:thin:@localhost:1521:ORCL";
Connection connection = DriverManager.getConnection( dburl, sgui.getUsername(), sgui.getPassword() );
// Fetch data from table specified by user
String query = "SELECT * FROM " + ins.getSelectedTable() + " ORDER BY id";
System.out.println(query);
Statement stmt = connection.createStatement();
ResultSet rset = stmt.executeQuery(query);
ResultSetMetaData metad = rset.getMetaData();
int columns = metad.getColumnCount();
// This loop gets the names of the columns
for (int i = 1; i <= columns; i++)
{
columnNames.addElement( metad.getColumnName(i) );
//columnNames.addElement("PROFILES");
}
// This loop gets the data inside the rows
while (rset.next())
{
Vector row = new Vector(columns);
//Vector b = new Vector((Collection)button);
for (int i = 1; i <= columns; i++)
{
row.addElement( rset.getObject(i) );
}
data.addElement( row );
//data.addElement(b);
}
rset.close();
stmt.close();
connection.close();
// Create table with results
JTable table = new JTable(data, columnNames)
{
public Class getColumnClass(int column)
{
for (int row = 0; row < getRowCount(); row++)
{
Object obj = getValueAt(row, column);
if (obj != null)
{
return obj.getClass();
}
}
return Object.class;
}
};
JScrollPane scroll = new JScrollPane( table );
getContentPane().add( scroll );
//table.addMouseListener(l);
//table.setEnabled(false);
//table.setDragEnabled(true);
JPanel panel = new JPanel();
getContentPane().add( panel, BorderLayout.SOUTH );
} catch (SQLException e) {
}
}
}
答案 0 :(得分:4)
首先看一下How to use tables
isCellEditable
确定单元格的TableModel
方法是否可编辑。此方法应返回false
当您直接向JTable
提供列/数据信息时,JTable
会在内部创建DefaultTableModel
。默认情况下,此类的isCellEditiable
方法将返回true
。
通过使用类似DefaultTableModel
的内容,您可以覆盖此方法,而不会遇到太多麻烦,并直接将模型设置为表格。
接下来,您需要将MouseListener
附加到表格
查看How to write a Mouse Listener
然后,您可以使用getSelectedColumn,getSelectedRow来获取所选单元格。
您还需要使用convertRowIndexToModel和convertColumnIndexToModel来转换视图和模型索引