javakey.java

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package digital_scale;

/**
 *
 * @author riyos
 */
import java.sql.*;
import javax.swing.JOptionPane;

public class javaconnect {
    Connection conn=null;
    public static Connection ConnectDB(){
        try
        {
            Class.forName("com.mysql.jdbc.Driver");
            Connection conn = DriverManager.getConnection("jdbc:mysql://192.168.1.39/db_name","username", "password");
            return conn;
        }
        catch (Exception e)
        {
            JOptionPane.showMessageDialog(null, e);
            return null;
        }
    }
}