为什么即使构建成功，applet也不会启动？

Question

我在Java Swing中进行了设计。数据库连接成功。我将此类添加为main类，因此编译错误已解决但仍未打开。这是布局

这是代码。我是使用Java Swing和applet的NetBeans的新手。我之前使用过NetBeans来编写Java程序：

 package dbms

 import dbms.JavaConnectDb;
 import java.sql.Connection;
 import java.sql.DriverManager;
 import javax.swing.JOptionPane;
 import oracle.jdbc.OraclePreparedStatement;
 import oracle.jdbc.OracleResultSet;



public class register extends javax.swing.JApplet {

public static void main(String[] args)
{

}
Connection conn = null;

OraclePreparedStatement pst = null;
OracleResultSet rs = null; 


@Override
public void init() {

    try {
        java.awt.EventQueue.invokeAndWait(new Runnable() {
            public void run() {
                initComponents();
            }
        });
    } catch (Exception ex) {
        ex.printStackTrace();
    }


}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">                          
private void initComponents() {


/* all the init components*/

}// </editor-fold>                        

private void jTextField1ActionPerformed(java.awt.event.ActionEvent evt) {                                            
    // TODO add your handling code here:
}                                           

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {                                         


    conn = JavaConnectDb.ConnectDb();

    try 
    {
   String sql = "insert into login (fname, lname, uname, pass) 
   values(?,?,?,?)";
        pst = (OraclePreparedStatement) conn.prepareStatement(sql);


        pst.setString(2, jTextField1.getText());
        pst.setString(3, jTextField2.getText());
        pst.setString(4, jTextField3.getText());
        pst.setString(5, jPasswordField1.getText());
        rs = (OracleResultSet) pst.executeQuery(sql);

        if(rs.next())
        {
            register r = new register();
            r.setVisible(true);
        }
    }

    catch(Exception e)
    {

    }

}                                        

private void jPasswordField1ActionPerformed(java.awt.event.ActionEvent evt) {                                                
    // TODO add your handling code here:
}                                               


// Variables declaration - do not modify                     
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JLabel jLabel6;
private javax.swing.JPanel jPanel1;
private javax.swing.JPasswordField jPasswordField1;
private javax.swing.JPasswordField jPasswordField2;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
private javax.swing.JTextField jTextField3;
// End of variables declaration                   
}

Answer 1

在netbeans中，右键单击项目并选择属性。在应用程序＆gt; Webstart，有一个选项Applet类。指定主类的完整路径（即包名）。

你做到了吗？

你的问题真的很难阐述。很难说出真正的错误。