应该只有一条,为何是两条记录?
private void Getdata(){
String sql= "select sysdate from dual" ;
try {
rs = stmt.executeQuery(sql);
rs.next();
String settledate = rs.getString(1);
//jTAConvert.add(rs.getString(1),null);
JOptionPane.showMessageDialog(null,new JButton(settledate));
}
catch (SQLException ex) {
jTAConvert.append("获取 数据有误!");
}
}
}
这样怎么现实两条记录啊?刚学,不懂