java – 如何对OK的JOptionPane.showMessageDialog执行操作

我正在研究我的第一个基于桌面的Java项目.我实际上有两个问题

1)如何对JOptionPane.showMessageDialog的OK按钮执行操作.我想在单击确定时导航到新的Jframe说x.java.

2)我有一个名为user的表.此表有8列userid(主键),名称,密码,emailid,dob,mobileno,city,date.必须从Jframe x中获取四个列条目,而从其他Jframe y中获取四个列条目.

我写了以下代码

对于第X帧

PreparedStatement stm = con.prepareStatement("insert into user  

(userrid,name,password,emailid))values (?,?,?) ");

      stm.setString(1,id); // id is a public variable
      stm.setString(2,name);
      stm.setString(3,ps);
      stm.setString(4,email);
     stm.executeUpdate();

对于帧Y.(userid是主键)

public class Y extends javax.swing.JFrame
{  
    X o = new X(); // to access id variable from frame X

} 



PreparedStatement stm = con.prepareStatement(" update user set  dob ='? ',mobileno 
='?',city='?',date='?'  where userid= 'o.id' ");

它不断抛出上述SQL查询的异常

java.sql.sqlException：参数索引超出范围(1>参数个数,为0).

最佳答案

1) How to perform action on OK button of JOptionPane.showMessageDialog.I want to navigate to a new Jframe say x.java on clicking ok.

int input = JOptionPane.showOptionDialog(null,"Hello World","The title",JOptionPane.OK_CANCEL_OPTION,JOptionPane.INFORMATION_MESSAGE,null,null);

if(input == JOptionPane.OK_OPTION)
{
    // do something
}

java java

java – 如何对OK的JOptionPane.showMessageDialog执行操作

相关文章