Thread: Using jbutton to write to jtextfield values to database

Hi, i'm trying to write a GUI which can write text from a JTextfield to a MySQL database when the user clicks a jbutton. I'm having errors with the eventhandler code for the button, can anyone take a look at my code for me and explain to me what i'm doing wrong:

import java.awt.*;
import java.sql.*;
import javax.swing.*;
 
 
class  ContractYearly{
 
 
 
 
    public static void main(String[] args){
 
    JFrame f=new JFrame();
    JLabel label1=new JLabel("Name: ");
    JLabel label2=new JLabel("Address: ");
    JLabel label3=new JLabel("");
    JButton SubmitButton=new JButton("Submit");
    JTextField text1=new JTextField(20);
    JTextField text2=new JTextField(20);
    try{
 
           Class.forName("com.mysql.jdbc.Driver");
           Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/MyStudentProfile", "root", "hejsan123");
 
           Statement st=con.createStatement();
           ResultSet rs=st.executeQuery("INSERT INTO contractyearly" +
           		"VALUES (12, ");
           String name="",address="";
           if(rs.next()){
               name=rs.getString("name");
               address=rs.getString("address");
           }
           text1.setText(name);
           text2.setText(address);
          }
        catch(Exception e){
        }
        JPanel p=new JPanel(new GridLayout(2,2));
        p.add(label1);
        p.add(text1);
        p.add(label3);
        p.add(label2);
        p.add(text2);
        p.add(SubmitButton);
        f.add(p);
        f.setVisible(true);
        f.pack();
    }
        private void SubmitButtonActionPerformed(java.awt.event.ActionEvent evt) {
 
            String s1 = text1.getText();
            String s2 = text2.getText();
 
     try{
            Statement stmt = this.con.createStatement();
     stmt.executeUpdate("insert into employee (First_Name ,Last_Name , Address , Salary ) values (" + s1+ ","+s2+ ")");
 
     }catch(Exception e){
 
     System.out.println(e.toString());
 
     }
     }
 
 
}

I'm really sorry that i've just pasted my code, i'm not aware of how to display it in the right format

First, please do not double post, your other post has been removed. Second, I've edited your post to use the code tags - for future reference please use these tags to make the posted code readable. Third, what is the exact error/exception you are receiving? Lastly, I recommend looking into using a PreparedStatement for what you are trying to do

The variables are out of scope - most are within the main method which, when that method exits, cannot be accessed. Use member variables of a class (a field) and reference them from outside a particular method.
Suggested reading, which should clarify things a bit: Declaring Member Variables (The Java™ Tutorials > Learning the Java Language > Classes and Objects)

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