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我正在回顾一个oracle表并在jtable中显示它。这是我第一次使用jtable,所以我不知道任何东西。我做了我的研究,并尝试了不同的方法,但我适当underatsnd适当.. 它不显示在jtable中的数据。从Oracle数据库显示JTable中的数据
DefaultTableModel model = new DefaultTableModel();
jTable1 = new javax.swing.JTable(model);
如果(evt.getSource()==将jButton2){
Connection conn=null;
PreparedStatement ps=null;
Vector<Vector<Object>> data = new Vector<Vector<Object>>();
Vector columns = new Vector();
Statement stmt=null;
try
{
Class.forName("oracle.jdbc.driver.OracleDriver");
conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:XE","system","hr");
}
catch(ClassNotFoundException | SQLException e)
{
System.out.println(e);
}
try{
ps=conn.prepareStatement("select * from \"SYSTEM\".NEWUSER");
ResultSet rs = ps.executeQuery();
ResultSetMetaData md = rs.getMetaData();
Vector<String> columnNames = new Vector<String>();
int columnCount = md.getColumnCount();
for (int i = 1; i <= columnCount; i++)
{
columnNames.addElement(md.getColumnName(i));
}
columns.add(columnNames);
while (rs.next())
{
Vector<Object> row = new Vector<Object>();
for (int i = 1; i <=columnCount; i++)
{
row.addElement(rs.getObject(i));
}
data.add(row);
//System.out.println("watever");
}
rs.close();
ps.close();
conn.close();
}
catch(SQLException | HeadlessException e)
{
System.out.println("the error is"+e);
}
JTable jTable1 = new JTable(data, columns);
}
我提出的行中的变化,但它仍然没有示出d数据..
我editted d代码nd张贴上面..你可以看到它。但它仍然没有工作 –