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Java GUI制作简单的管理系统

本文实例为大家分享了Java GUI管理系统的具体代码，供大家参考，具体内容如下

1.先完成主页面MainUI（代码如下）

package com.pag_1; 
import javax.swing.*; 
import java.awt.*; 
import java.awt.event.ActionEvent; 
import java.awt.event.ActionListener; 

public class MainUI extends JFrame implements ActionListener { 

 //定义组件 
 JButton jb1,jb2,jb3=null; 
 JRadioButton jrb1,jrb2=null; 
 JPanel jp1,jp2,jp3,jp4=null; 
 JTextField jtf=null; 
 JLabel jlb1,jlb2,jlb3=null; 
 JPasswordField jpf=null; 
 ButtonGroup bg=null; 

 //设定用户名和密码 
 final String stu_name="王小明"; 
 final String stu_pwd="1"; 
 final String stu_num="14140301"; 
 final String tea_name="王老师"; 
 final String tea_pwd="1"; 
 final String tea_num="00001"; 

 public static void main(String[] args) { 

  MainUI mUI=new MainUI(); 
 } 
 public MainUI() 
 { 
   //创建组件 
  jb1=new JButton("登录"); 
  jb2=new JButton("重置"); 
  jb3=new JButton("退出");

  //设置监听 
  jb1.addActionListener(this); 
  jb2.addActionListener(this); 
  jb3.addActionListener(this); 

  jrb1=new JRadioButton("教师"); 
  jrb2=new JRadioButton("学生"); 
  bg=new ButtonGroup(); 
  bg.add(jrb1); 
  bg.add(jrb2); 
  jrb2.setSelected(true); //初始页面默认选择权限为 学生

  jp1=new JPanel(); 
  jp2=new JPanel(); 
  jp3=new JPanel(); 
  jp4=new JPanel();     

  jlb1=new JLabel("用户名："); 
  jlb2=new JLabel("密 码："); 
  jlb3=new JLabel("权 限："); 

  jtf=new JTextField(10); 
  jpf=new JPasswordField(10); 
  //加入到JPanel中 
  jp1.add(jlb1); 
  jp1.add(jtf); 

  jp2.add(jlb2); 
  jp2.add(jpf); 

  jp3.add(jlb3);  //添加标签
  jp3.add(jrb1); 
  jp3.add(jrb2); 

  jp4.add(jb1);  //添加按钮
  jp4.add(jb2); 
  jp4.add(jb3);

  //加入JFrame中 
  this.add(jp1); 
  this.add(jp2); 
  this.add(jp3); 
  this.add(jp4); 

  this.setLayout(new GridLayout(4,1));   //选择GridLayout布局管理器  
  this.setTitle("学生成绩管理系统");   
  this.setSize(300,200);   
  this.setLocation(400, 200);   
  this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //设置当关闭窗口时，保证JVM也退出 
  this.setVisible(true); 
  this.setResizable(true); 

 } 

 public void actionPerformed(ActionEvent e) {   //事件判断

  if(e.getActionCommand()=="登录") 
  { 
   //如果选中教师登录 
   if(jrb1.isSelected()) 
   { 
     tealogin();        //连接到教师的方法 页面
   }else if(jrb2.isSelected()) //学生在登录系统 
   { 
     stulogin();        //连接到学生的方法 页面
   } 

  }else if(e.getActionCommand()=="重置") 
  { 
     clear(); 
  }    

 } 

  //学生登录判断方法 
 public void stulogin() 
 { 
  if(stu_name.equals(jtf.getText())&&stu_pwd.equals(jpf.getText())) 
  {   
   JOptionPane.showMessageDialog(null,"登录成功！","提示消息",JOptionPane.WARNING_MESSAGE);   
   dispose();  
   clear();   
   StdUI ui=new StdUI();  //创建新界面 
  }else if(jtf.getText().isEmpty()&&jpf.getText().isEmpty()) 
  { 
   JOptionPane.showMessageDialog(null,"请输入用户名和密码！","提示消息",JOptionPane.WARNING_MESSAGE); 
  }else if(jtf.getText().isEmpty()) 
  { 
   JOptionPane.showMessageDialog(null,"请输入用户名！","提示消息",JOptionPane.WARNING_MESSAGE); 
  }else if(jpf.getText().isEmpty()) 
  { 
   JOptionPane.showMessageDialog(null,"请输入密码！","提示消息",JOptionPane.WARNING_MESSAGE); 
  }else 
  { 
   JOptionPane.showMessageDialog(null,"用户名或者密码错误！\n请重新输入","提示消息",JOptionPane.ERROR_MESSAGE); 
   //清空输入框 
   clear(); 
  } 
 } 
 //教师登录判断方法 
 public void tealogin() 
 { 
  if(tea_name.equals(jtf.getText())&&tea_pwd.equals(jpf.getText())) 
  { 

    JOptionPane.showMessageDialog(null,"登录成功！","提示消息",JOptionPane.WARNING_MESSAGE); 
    clear();   
    dispose();    
    TerUI ui=new TerUI(); //创建一个新界面 
  }else if(jtf.getText().isEmpty()&&jpf.getText().isEmpty()) 
  { 
   JOptionPane.showMessageDialog(null,"请输入用户名和密码！","提示消息",JOptionPane.WARNING_MESSAGE); 
  }else if(jtf.getText().isEmpty()) 
  { 
   JOptionPane.showMessageDialog(null,"请输入用户名！","提示消息",JOptionPane.WARNING_MESSAGE); 
  }else if(jpf.getText().isEmpty()) 
  { 
   JOptionPane.showMessageDialog(null,"请输入密码！","提示消息",JOptionPane.WARNING_MESSAGE); 
  }else 
  { 
   JOptionPane.showMessageDialog(null,"用户名或者密码错误！\n请重新输入","提示消息",JOptionPane.ERROR_MESSAGE); 
   clear(); //清空输入框 
  } 
 } 
 //清空文本框和密码框 
 public void clear() 
 { 
  jtf.setText(""); 
  jpf.setText(""); 
 } 

}

运行图1

 

用户名和密码如下：

2.完成学生界面StuUI，这个页面在MainUI界面设置了按钮连接（代码如下）

package com.pag_1;
import java.awt.*; 
import java.awt.event.*; 
import javax.swing.*; 
import javax.swing.JButton;
import java.awt.color.*;
import javax.swing.JOptionPane;
import com.pag_1.MainUI; 
public class StdUI extends JFrame implements ActionListener 
{ 

   //定义组件 
  JButton jb1=new JButton();
  JButton jb2=new JButton(); 
  JPanel jp1,jp2,jp3,jp4=null; 
  JLabel jlb1,jlb2,jlb3,jlb4,jlb5,jlb6=null; 

  public static void main(String[] args)
  { 
   StdUI ui=new StdUI(); 
  } 


  //****************************事件判断**********************

  //构造函数 
  public StdUI() //不能申明为void!!!!!否则弹不出新界面 
  { 

   //创建组件 
   jb1=new JButton("课程表"); 
   jb1.setForeground(Color.BLUE);
   jb2=new JButton("成绩查询"); 
   jb2.setForeground(Color.BLUE);

   jp1=new JPanel(); 
   jp2=new JPanel(); 
   jp3=new JPanel(); 

   jlb1=new JLabel("姓名："); 
   jlb2=new JLabel("学号："); 
   jlb3=new JLabel("最新公告："); 
   jlb3.setForeground(Color.red);
   jlb4=new JLabel("我院举行学生体测通知"); 
   jlb5=new JLabel(new MainUI().stu_name);
   jlb6=new JLabel(new MainUI().stu_num);

   jp1.add(jlb1); 
   jp1.add(jlb5);
   jp1.add(jlb2); 
   jp1.add(jlb6);


   jp2.add(jb1); 
   jp2.add(jb2); 

   jp3.add(jlb3);
   jp3.add(jlb4); 

   this.add(jp1); 
   this.add(jp2); 
   this.add(jp3); 


   //设置布局管理器 
   this.setLayout(new GridLayout(4,3,50,50)); 
   this.setTitle("学生成绩管理系统"); 
   this.setSize(400,300); 
   this.setLocation(200, 200);  

   this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 

   this.setVisible(true); 
   jb1.addActionListener(this);
   jb2.addActionListener(this);


  }

  public void actionPerformed(ActionEvent e) { 
    if(e.getSource() == jb1){
    //关闭当前界面 
     dispose(); 
     new KeChengBiaoUI();
    }else if(e.getSource() == jb2){
     //关闭当前界面 
     dispose(); 
     new ChengJiBiaoUI();
    }

  } 
}

运行MainUI输入用户学生，会出现下面学生界面，其中界面中的 课程表和成绩查询是两个可以点击的按钮，会连接到下个页面再后面步骤。

3.完成教师界面TerUI，这个和学生页面一样，在MainUI页面有设置按钮事件，连接到MainUI页面.(代码如下)

package com.pag_1;
import java.awt.*; 
import java.awt.event.*; 
import javax.swing.*; 
import javax.swing.JButton;
import com.pag_1.MainUI; 
public class TerUI extends JFrame implements ActionListener 
{ 
   //定义组件 
  JButton jb1,jb2=null; 
  JPanel jp1,jp2,jp3,jp4=null; 
  JLabel jlb1,jlb2,jlb3,jlb4,jlb5,jlb6=null; 

  public static void main(String[] args) {   
   TerUI ui=new TerUI(); 
  } 
  public TerUI() 
  { 
   //创建组件 
   jb1=new JButton("课程管理");
   jb1.setForeground(Color.BLUE);
   jb2=new JButton("学生名单"); 
   jb2.setForeground(Color.BLUE);

   jp1=new JPanel(); 
   jp2=new JPanel(); 
   jp3=new JPanel(); 

   jlb1=new JLabel("姓名："); 
   jlb2=new JLabel("工号："); 
   jlb3=new JLabel("最新公告："); 
   jlb3.setForeground(Color.red);
   jlb4=new JLabel("我院举行体测的通知"); 
   jlb5=new JLabel(new MainUI().tea_name);
   jlb6=new JLabel(new MainUI().tea_num);

   jp1.add(jlb1); 
   jp1.add(jlb5);
   jp1.add(jlb2); 
   jp1.add(jlb6);

   jp2.add(jb1); 
   jp2.add(jb2); 

   jp3.add(jlb3);
   jp3.add(jlb4); 

   this.add(jp1); 
   this.add(jp2); 
   this.add(jp3);   
   this.setLayout(new GridLayout(4,3,50,50)); //设置布局管理器 
   this.setTitle("学生成绩管理系统"); 
   this.setSize(400,300); 
   this.setLocation(200, 200);  
   this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
   this.setVisible(true);   
   jb1.addActionListener(this);
   jb2.addActionListener(this);
} 
  public void actionPerformed(ActionEvent e) { 
    if(e.getSource() == jb1){    
     dispose(); 
     new KeChengGuanLiUI();    //创建一个新界面 
    }else if(e.getSource() == jb2){
     dispose(); 
     new XueShengMingDanUI();    //创建一个新界面 
    }

  } 
}

运行MainUI输入用户教师，会出现下面教师界面，其中界面中的 课程管理和学生名单是两个可以点击的按钮，会连接到下个页面再后面步骤。

4.完成学生界面的课程表界面（代码如下）

package com.pag_1;

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.TableColumn;

public class KeChengBiaoUI extends JFrame 
{ 

 public KeChengBiaoUI() 
 { 
  intiComponent(); 
 } 

 private void intiComponent() 
 {  
  String[] columnNames = 
  { "课节数","星期一", "星期二", "星期三", "星期四", "星期五", "星期六","星期日" }; 

  Object[][] obj=new Object[8][8]; 
  for (int i=0;i<8;i++) 
  { 
   for(int j=0;j<8;j++) 
   { 
    switch (j) 
    { 
    case 0: 
     obj[0][0] = "第一节课";
     obj[0][1] = "光纤通信"; 
     obj[0][2] = "电磁场"; 
     obj[0][3] = "物联网"; 
     obj[0][4] = "DSP实验"; 
     obj[0][5] = " "; 
     obj[0][6] = "手机维修"; 
     obj[0][7] = " "; 
     break; 
    case 1: 
     obj[1][0] = "第二节课";
     obj[1][1] = "光纤通信"; 
     obj[1][2] = "电磁场"; 
     obj[1][3] = "物联网"; 
     obj[1][4] = "DSP实验"; 
     obj[1][5] = " "; 
     obj[1][6] = "手机维修"; 
     obj[1][7] = " "; 
     break; 
    case 2: 
     obj[2][0] = "第三节课";
     obj[2][1] = "Android"; 
     obj[2][2] = " "; 
     obj[2][3] = " "; 
     obj[2][4] = "DSP实验"; 
     obj[2][5] = "手机维修"; 
     obj[2][6] = "手机维修"; 
     obj[2][7] = " "; 
     break; 
    case 3: 
     obj[3][0] = "第四节课";
     obj[3][1] = "Android"; 
     obj[3][2] = " "; 
     obj[3][3] = " "; 
     obj[3][4] = " "; 
     obj[3][5] = "手机维修"; 
     obj[3][6] = "手机维修"; 
     obj[3][7] = "光纤通信"; 
     break; 
    case 4: 
     obj[4][0] = "第五节课";
     obj[4][1] = "Android实验"; 
     obj[4][2] = " "; 
     obj[4][3] = " "; 
     obj[4][4] = " "; 
     obj[4][5] = " "; 
     obj[4][6] = " "; 
     obj[4][7] = " "; 
     break; 
    case 5: 
     obj[5][0] = "第六节课";
     obj[5][1] = "Android实验"; 
     obj[5][2] = " "; 
     obj[5][3] = " "; 
     obj[5][4] = " "; 
     obj[5][5] = " "; 
     obj[5][6] = " "; 
     obj[5][7] = " "; 
     break; 
    case 6: 
     obj[6][0] = "第七节课";
     obj[6][1] = "Android实验"; 
     obj[6][2] = " "; 
     obj[6][3] = " "; 
     obj[6][4] = " "; 
     obj[6][5] = " "; 
     obj[6][6] = " "; 
     obj[6][7] = " "; 
     break; 
    case 7: 
     obj[7][0] = "第七节课";
     obj[7][1] = ""; 
     obj[7][2] = " "; 
     obj[7][3] = " "; 
     obj[7][4] = " "; 
     obj[7][5] = " "; 
     obj[7][6] = " "; 
     obj[7][7] = " "; 
     break; 
    case 8: 
     obj[8][0] = "第八节课";
     obj[8][1] = " "; 
     obj[8][2] = " "; 
     obj[8][3] = " "; 
     obj[8][4] = " "; 
     obj[8][5] = " "; 
     obj[8][6] = " "; 
     obj[8][7] = " "; 
     break; 
    } 
   } 
  } 

  JTable table=new JTable(obj, columnNames);  
  TableColumn column=null; 
  int colunms = table.getColumnCount(); 
  for(int i=0;i<colunms;i++) 
  { 
   column = table.getColumnModel().getColumn(i);    
   column.setPreferredWidth(100); 
  }  
  table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);  
  JScrollPane scroll = new JScrollPane(table); 
  scroll.setSize(300, 50); 

  add(scroll); 

  this.setLocation(450, 200); 
  this.setVisible(true); 
  this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
  this.pack(); 
 } 

 public static void main(String[] args) 
 { 
  new KeChengBiaoUI(); 
 } 
}

课程表界面

5.完成学生的成绩查询界面（代码如下）

package com.pag_1;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.TableColumn;

public class ChengJiBiaoUI extends JFrame 
{ 

 public ChengJiBiaoUI() 
 { 
  intiComponent(); 
 } 

 //初始化窗体组件 
 private void intiComponent() 
 { 

  String[] columnNames = 
  { "课程数目","课程名称", "学分", "绩点", "分数", "补考" }; //设置JTable的列名 
  Object[][] obj=new Object[7][7]; 
  for (int i=0;i<7;i++) 
  { 
   for(int j=0;j<7;j++) 
   { 
    switch (j) 
    { 
    case 0: 
     obj[0][0] = "    1";
     obj[0][1] = "   光纤通信"; 
     obj[0][2] = "    2"; 
     obj[0][3] = "    1.5"; 
     obj[0][4] = "    75"; 
     obj[0][5] = "    否"; 


     break; 
    case 1: 
     obj[1][0] = "    2";
     obj[1][1] = "   Android"; 
     obj[1][2] = "    2"; 
     obj[1][3] = "    1.8"; 
     obj[1][4] = "    5"; 
     obj[1][5] = "    否"; 

     break; 
    case 2: 
     obj[2][0] = "    3";
     obj[2][1] = "   物联网"; 
     obj[2][2] = "    1.5"; 
     obj[2][3] = "    1.2"; 
     obj[2][4] = "    70"; 
     obj[2][5] = "    否"; 

     break; 
    case 3: 
     obj[3][0] = "    4";
     obj[3][1] = "   电磁场"; 
     obj[3][2] = "    2"; 
     obj[3][3] = "    1.6"; 
     obj[3][4] = "    78"; 
     obj[3][5] = "    否"; 

     break; 
    case 4: 
     obj[4][0] = "    5";
     obj[4][1] = "   手机维修"; 
     obj[4][2] = "    1.0"; 
     obj[4][3] = "    1.0"; 
     obj[4][4] = "    优秀"; 
     obj[4][5] = "    否"; 

     break; 
    case 5: 
     obj[5][0] = "    6";
     obj[5][1] = "    DSP"; 
     obj[5][2] = "    1.0"; 
     obj[5][3] = "    1.0"; 
     obj[5][4] = "    良好"; 
     obj[5][5] = "    否"; 
     break; 
    case 6: 
     obj[6][0] = "    7";
     obj[6][1] = "  通信原理实验"; 
     obj[6][2] = "    1.0"; 
     obj[6][3] = "    1.0"; 
     obj[6][4] = "    良好"; 
     obj[6][5] = "    否"; 
     break; 

    } 
   } 
  } 

  JTable table=new JTable(obj, columnNames); //JTable的其中一种构造方法 
  TableColumn column=null;     //设置JTable的列默认的宽度和高度 
  int colunms = table.getColumnCount(); 
  for(int i=0;i<colunms;i++) 
  { 
   column = table.getColumnModel().getColumn(i); 
   column.setPreferredWidth(100);   //将每一列的默认宽度设置为100
  } 
  table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF); //设置JTable自动调整列表的状态，此处设置为关闭 
  JScrollPane scroll = new JScrollPane(table); //用JScrollPane装载JTable，这样超出范围的列就可以通过滚动条来查看
  scroll.setSize(300, 50); 

  add(scroll); 

  this.setLocation(450, 200); 
  this.setVisible(true); 
  this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
  this.pack(); 
 } 

 public static void main(String[] args) 
 { 
  new ChengJiBiaoUI(); 
 } 
}

学生成绩表界面

6.完成教师的课程管理界面（代码如下）

package com.pag_1;

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.TableColumn;

public class KeChengGuanLiUI extends JFrame 
{ 
 public KeChengGuanLiUI() 
 { 
  intiComponent(); 
 } 
 private void intiComponent() 
 {   
  String[] columnNames = 
  { "课节数","星期一", "星期二", "星期三", "星期四", "星期五", "星期六","星期日" };   
  Object[][] obj=new Object[8][8]; 
  for (int i=0;i<8;i++) 
  { 
   for(int j=0;j<8;j++) 
   { 
    switch (j) 
    { 
    case 0: 
     obj[0][0] = " 第一节课";
     obj[0][1] = "  有课"; 
     obj[0][2] = " "; 
     obj[0][3] = " "; 
     obj[0][4] = "  有课"; 
     obj[0][5] = " "; 
     obj[0][6] = ""; 
     obj[0][7] = " "; 
     break; 
    case 1: 
     obj[1][0] = " 第二节课";
     obj[1][1] = "  有课"; 
     obj[1][2] = ""; 
     obj[1][3] = ""; 
     obj[1][4] = "  有课"; 
     obj[1][5] = " "; 
     obj[1][6] = ""; 
     obj[1][7] = " "; 
     break; 
    case 2: 
     obj[2][0] = " 第三节课";
     obj[2][1] = ""; 
     obj[2][2] = " "; 
     obj[2][3] = "  有课"; 
     obj[2][4] = ""; 
     obj[2][5] = ""; 
     obj[2][6] = ""; 
     obj[2][7] = " "; 
     break; 
    case 3: 
     obj[3][0] =" 第四节课";
     obj[3][1] = ""; 
     obj[3][2] = " "; 
     obj[3][3] = "  有课"; 
     obj[3][4] = " "; 
     obj[3][5] = ""; 
     obj[3][6] = ""; 
     obj[3][7] = ""; 
     break; 
    case 4: 
     obj[4][0] =" 第五节课";
     obj[4][1] = ""; 
     obj[4][2] = " "; 
     obj[4][3] = " "; 
     obj[4][4] = " "; 
     obj[4][5] = " "; 
     obj[4][6] = " "; 
     obj[4][7] = " "; 
     break; 
    case 5: 
     obj[5][0] =" 第六节课";
     obj[5][1] = ""; 
     obj[5][2] = " 开会"; 
     obj[5][3] = " "; 
     obj[5][4] = " "; 
     obj[5][5] = " "; 
     obj[5][6] = " "; 
     obj[5][7] = " "; 
     break; 
    case 6: 
     obj[6][0] =" 第七节课";
     obj[6][1] = ""; 
     obj[6][2] = " 有课"; 
     obj[6][3] = " "; 
     obj[6][4] = " 开会"; 
     obj[6][5] = " "; 
     obj[6][6] = " "; 
     obj[6][7] = " "; 
     break; 
    case 7: 
     obj[7][0] =" 第八节课";
     obj[7][1] = ""; 
     obj[7][2] = " 有课 "; 
     obj[7][3] = " "; 
     obj[7][4] = " "; 
     obj[7][5] = " "; 
     obj[7][6] = " "; 
     obj[7][7] = " "; 
     break; 
    } 
   } 
  }   

  JTable table=new JTable(obj, columnNames); 
  TableColumn column=null; 
  int colunms = table.getColumnCount(); 
  for(int i=0;i<colunms;i++) 
  { 
   column = table.getColumnModel().getColumn(i);    
   column.setPreferredWidth(100); 
  }   
  table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);  
  JScrollPane scroll = new JScrollPane(table); 
  scroll.setSize(300, 50); 

  add(scroll); 

  this.setLocation(450, 200); 
  this.setVisible(true); 
  this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
  this.pack(); 
 } 

 public static void main(String[] args) 
 { 
  new KeChengGuanLiUI(); 
 } 
}

教师课程管理

7.完成教师页面的学生名单页面（代码如下）

package com.pag_1;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.TableColumn;

public class XueShengMingDanUI extends JFrame 
{ 

 public XueShengMingDanUI() 
 { 
  intiComponent(); 
 } 

  //初始化窗体组件 
 private void intiComponent() 
 { 
  // 设置JTable的列名 
  String[] columnNames = 
  { "学号","姓名", "专业", "班级"}; 
  Object[][] obj=new Object[7][7]; 
  for (int i=0;i<7;i++) 
  { 
   for(int j=0;j<7;j++) 
   { 
    switch (j) 
    { 
    case 0: 
     obj[0][0] = "  14140301";
     obj[0][1] = "    王小明"; 
     obj[0][2] = "   通信工程"; 
     obj[0][3] = "     2"; 
     break; 
    case 1: 
     obj[1][0] = "  14140302";
     obj[1][1] = "   王雷"; 
     obj[1][2] = "   通信工程"; 
     obj[1][3] = "     2"; 
     break; 
    case 2: 
     obj[2][0] = "  14140303";
     obj[2][1] = "   李芳"; 
     obj[2][2] = "   通信工程"; 
     obj[2][3] = "     2"; 
     break; 
    case 3: 
     obj[3][0] = "  14140304";
     obj[3][1] = "   张三"; 
     obj[3][2] = "   通信工程"; 
     obj[3][3] = "     2";     
     break; 
    case 4: 
     obj[4][0] = "  14140305";
     obj[4][1] = "   李四"; 
     obj[4][2] = "   通信工程"; 
     obj[4][3] = "     2"; 
     break; 
    case 5: 
     obj[5][0] = "  14140306";
     obj[5][1] = "   文宇"; 
     obj[5][2] = "   通信工程"; 
     obj[5][3] = "    2"; 
     break; 
    case 6: 
     obj[6][0] = "  14140307";
     obj[6][1] = "   王飞"; 
     obj[6][2] = "   通信工程"; 
     obj[6][3] = "     2";     
     break; 

    } 
   } 
  } 

  JTable table=new JTable(obj, columnNames); //JTable的其中一种构造方法 
  TableColumn column=null;     //设置JTable的列默认的宽度和高度 
  int colunms = table.getColumnCount(); 
  for(int i=0;i<colunms;i++) 
  { 
   column = table.getColumnModel().getColumn(i); 
   column.setPreferredWidth(100);   //将每一列的默认宽度设置为100
  } 
  table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF); //设置JTable自动调整列表的状态，此处设置为关闭     
  JScrollPane scroll = new JScrollPane(table); //用JScrollPane装载JTable，这样超出范围的列就可以通过滚动条来查看 
  scroll.setSize(300, 50);   

  add(scroll); 

  this.setLocation(450, 200); 
  this.setVisible(true); 
  this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
  this.pack(); 
 } 

 public static void main(String[] args) 
 { 
  new XueShengMingDanUI(); 
 } 
}

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