本来这个是登陆成功后跳转后的界面，现在连界面都出现不了，哪里出错了
package client;
import java.awt.*;
import javax.swing.*;
import java.awt.Rectangle;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.ResultSet;
import java.sql.Statement;
import javax.swing.table.DefaultTableModel;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.Vector;
import com.sun.org.apache.xpath.internal.operations.Bool;
import java.awt.event.WindowEvent;
import java.awt.event.WindowAdapter;
import java.io.*;
import javax.swing.event.ListSelectionListener;
import javax.swing.event.ListSelectionEvent;

public class MainFace_User extends JFrame implements ListSelectionListener{
    public MainFace_User(String title) {
        super(title);
        try {
            jbInit();
            this.setBounds(200,200,735,615);
            this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            ///////////////////////////////////////////////////////////////////////////习题管理部分///////////////////////////////////////////////////////
                       Text_Type1.addItem("");//0
                       Text_Type1.addItem("选择题");//1
                       Text_Type1.addItem("填空题");//2
                       Text_Type1.addItem("判断题");//3
                       Text_Type1.addItem("计算题");//4
                       Text_Type1.addItem("简答题");//5
                       Text_Type1.addItem("综合题");//6

                       Text_Difficulty.addItem("");
                       Text_Difficulty.addItem("易");
                       Text_Difficulty.addItem("中");
                       Text_Difficulty.addItem("难");


                       Text_Type2.addItem("");//0
                       Text_Type2.addItem("选择题");//1
                       Text_Type2.addItem("填空题");//2
                       Text_Type2.addItem("判断题");//3
                       Text_Type2.addItem("计算题");//4
                       Text_Type2.addItem("简答题");//5
                       Text_Type2.addItem("综合题");//6

                       //把当前数据库中存在的课程名称放到JP_getCourse1中
                       Vector courseimfor=new Vector();
                       ClientSocket.readCourse(courseimfor);
                       Text_Course.addItem("");
                       count=courseimfor.size();
                       int i=0;
                       for(i=0;i<count;i++){
                           Text_Course.addItem(((Vector)courseimfor.elementAt(i)).elementAt(1).toString());
                       }

                       usercourse=user.getUser_course();

                       String sqlStr = "select * from exercises";
                       ClientSocket.read(sqlStr, StoreText);
                       setcol();
                       model.setDataVector(data1,columnNamanes);
                       TextTable.addMouseListener(
                               new MouseAdapter() {
                                    public void mouseReleased(MouseEvent e)  {
                                         int row=TextTable.getSelectedRow();
                                         if(row<0)return;
                                         Vector ea=new Vector();
                                         preId=TextTable.getValueAt(row,0).toString();  //得到所在行的第一个列的值，作为下面事件传递的参数
                                         for(int i=0;i<StoreText.size();i++){            //取题目的内容
                                             ea=(Vector)StoreText.elementAt(i);
                                             if(ea.elementAt(0).equals(preId)){
                                                 Text_Subject.setText(ea.elementAt(3).toString());
                                                 Text_Key.setText(ea.elementAt(4).toString());
                                                 break;
                                             }
                                         }
                                   }
                               }
                       );
                       Text_Subject.addMouseListener(
                               new MouseAdapter() {
                                    public void mouseReleased(MouseEvent e)  {
                                        Text_Subject.setText("");
                                       }
                                   }
                       );
                       Text_Key.addMouseListener(
                               new MouseAdapter() {
                                    public void mouseReleased(MouseEvent e)  {
                                        Text_Key.setText("");
                                       }
                                   }
                       );
///////////////////////////////////////////////////////////习题管理部分///////////////////////////////////////////////////////


        } catch (Exception exception) {
            exception.printStackTrace();
        }
    }