diff --git a/src/database/Add.java b/src/database/Add.java
new file mode 100644
index 0000000000000000000000000000000000000000..c6d90670653284087c764e1f70f2e988fec47edf
--- /dev/null
+++ b/src/database/Add.java
@@ -0,0 +1,96 @@
+package database;
+
+import java.awt.*;
+import java.awt.event.*;
+import java.sql.*;
+import javax.swing.*;
+
+/**
+ * 添加学生信息
+ * @author lsj
+ *
+ */
+public class Add extends JDialog implements ActionListener{
+	JTable table;
+	JScrollPane p;
+	String []head= {"学号","姓名","性别","出生","籍贯","专业","班级","联系方式","技能","密码"};
+	String [][]a= {{"","","","","","","","","",""}};//更新时装载信息的载体
+	JButton in;
+	public Add() {
+		init();
+		setVisible(true);
+		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
+	}
+	public void init() {
+		setLayout(null);
+		setTitle("添加信息");
+		setBounds(200,300,1000,200);
+		table=new JTable(a,head);
+		table.setFont(new Font("宋体",Font.BOLD,16));
+		table.setRowHeight(40);
+		in=new JButton("插入");
+		p=new JScrollPane(table);
+		add(p);
+		add(in);
+		p.setBounds(10, 10, 900, 80);
+		in.setBounds(920,30,60,40);
+		in.addActionListener(this);
+	}
+	
+	public void actionPerformed(ActionEvent e) {
+		int m=0,n=0;
+		Connection con;
+		PreparedStatement sql;
+		if(e.getSource()==in) {
+			try {
+				String uri="jdbc:derby:学生信息管理系统;create=false";
+				con=DriverManager.getConnection(uri);
+				String SQL=
+						"insert into student values(?,?,?,?,?,?,?,?,?)";
+				sql=con.prepareStatement(SQL);
+				sql.setString(1, a[0][0].trim());
+				sql.setString(2, a[0][1].trim());
+				sql.setString(3, a[0][2].trim());
+				sql.setString(4, a[0][3].trim());
+				sql.setString(5, a[0][4].trim());
+				sql.setString(6, a[0][5].trim());
+				sql.setString(7, a[0][6].trim());
+				sql.setString(8, a[0][7].trim());
+				sql.setString(9, a[0][8].trim());
+				m=sql.executeUpdate();
+				con.close();
+			}
+			catch(SQLException exp) {
+				JOptionPane.showMessageDialog(null,""+exp,"消息对话框",JOptionPane.WARNING_MESSAGE);
+		}
+			try {
+				String uri="jdbc:derby:学生信息管理系统;create=false";
+				con=DriverManager.getConnection(uri);
+				String SQL="insert into zhanghao values(?,?,?)";
+				sql=con.prepareStatement(SQL);
+				sql.setString(1, a[0][0].trim());
+				sql.setString(2, a[0][9].trim());
+				sql.setString(3, "学生");
+				n=sql.executeUpdate();
+				con.close();
+			}
+			catch(SQLException exp) {
+				JOptionPane.showMessageDialog(null,""+exp,"消息对话框",JOptionPane.WARNING_MESSAGE);
+		}
+			if(m!=0&&n!=0) {
+				JOptionPane.showMessageDialog(null,""+"添加成功","消息对话框",JOptionPane.WARNING_MESSAGE);
+				for(int i=0;i<a[0].length;i++)
+					a[0][i]="";
+				remove(p);
+				table=new JTable(a,head);
+				table.setFont(new Font("宋体",Font.BOLD,16));
+				table.setRowHeight(40);
+				p=new JScrollPane(table);
+				add(p);
+				p.setBounds(10, 10, 900, 80);
+			}
+			else
+				JOptionPane.showMessageDialog(null,""+"添加失败","消息对话框",JOptionPane.WARNING_MESSAGE);
+		}		
+		}
+}
\ No newline at end of file
diff --git a/src/database/Administrator.java b/src/database/Administrator.java
new file mode 100644
index 0000000000000000000000000000000000000000..57d544075dcd91418c25e71d0e93301b3b5dc567
--- /dev/null
+++ b/src/database/Administrator.java
@@ -0,0 +1,123 @@
+package database;
+import java.awt.*;
+import java.awt.event.*;
+import javax.swing.*;
+import java.sql.*;
+
+/**
+ * 管理员界面
+ * @author lsj
+ *
+ */
+public class Administrator extends JFrame implements ActionListener{
+	String account="";
+	Query query;
+	JTable table;
+	JScrollPane p;
+
+	JButton rf;//刷新
+	JMenuBar menubar;
+	JMenu menu,subMenu;
+	JMenuItem item1,item2,item3,item4,item5,item6,item7;
+	int i=0;
+	public Administrator(String account) {
+		this.account=account;
+		setLayout(null);
+		setTitle("管理员登录");
+		init();
+		setBounds(300,200,950,300);
+		setVisible(true);
+		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
+	}
+	public void init() {
+		menubar=new JMenuBar();
+		menu=new JMenu("管理");
+		subMenu=new JMenu("修改信息");
+		item1=new JMenuItem("查询信息");
+		item1.addActionListener(this);
+		item2=new JMenuItem("审核信息");
+		item2.addActionListener(this);
+		item3=new JMenuItem("添加信息");
+		item3.addActionListener(this);
+		item4=new JMenuItem("删除信息");
+		item4.addActionListener(this);
+		item5=new JMenuItem("修改信息");
+		item5.addActionListener(this);
+		item6=new JMenuItem("修改密码");
+		item6.addActionListener(this);
+		item7=new JMenuItem("切换账号");
+		item7.addActionListener(this);
+		
+		subMenu.add(item3);
+		subMenu.add(item4);
+		subMenu.add(item5);
+		
+		menu.add(item1);
+		menu.add(subMenu);
+		menu.add(item2);
+		menu.add(item6);
+		menu.add(item7);
+		
+		menubar.add(menu);
+		setJMenuBar(menubar);
+		
+}
+	
+	public void actionPerformed(ActionEvent e) {
+		query=new Query();	
+		//查询信息
+		if(e.getSource()==item1||e.getSource()==rf) {
+			if(i==1) {
+				remove(p);
+				remove(rf);
+				JOptionPane.showMessageDialog(null,"刷新成功","消息对话框",JOptionPane.WARNING_MESSAGE);
+			}
+		try {
+			query.setSQL("select * from student");
+			query.startQuery();
+			String []ziduan=query.getColumnName();//获得student的列名
+			String [][]record=query.getRecord();//获得student的数据
+			table=new JTable(record,ziduan);
+			table.setFont(new Font("宋体",Font.BOLD,16));
+			table.setRowHeight(40);
+			p=new JScrollPane(table);
+			rf=new JButton("刷新");
+			rf.addActionListener(this);
+			add(p);
+			add(rf);
+			p.setBounds(10, 10, 900, 150);
+			rf.setBounds(400,200,60,40);
+			this.setVisible(true);
+			i=1;
+		}
+		catch(Exception exp) {}
+		}
+	//审核信息
+	if(e.getSource()==item2) {
+		new He();
+	}
+		
+	//添加信息
+	if(e.getSource()==item3) {
+		new Add();
+	} 
+	//更新信息
+	if(e.getSource()==item5) {
+		new Update();
+	}
+	//删除信息
+	if(e.getSource()==item4) {
+		new Delete();
+	}
+	//修改密码
+	if(e.getSource()==item6) {
+		new Password(account);
+	}
+	
+	//重新登录
+	if(e.getSource()==item7) {
+		this.dispose();
+		new SystemLogin();
+	}
+	}
+}
\ No newline at end of file
diff --git a/src/database/Delete.java b/src/database/Delete.java
new file mode 100644
index 0000000000000000000000000000000000000000..387b2e2e760ca4616013950c277bf68d25e89b80
--- /dev/null
+++ b/src/database/Delete.java
@@ -0,0 +1,116 @@
+package database;
+
+import java.awt.*;
+import java.awt.event.*;
+import java.sql.*;
+import javax.swing.*;
+
+/**
+ * 删除信息
+ * @author lsj
+ *
+ */
+public class Delete extends JDialog implements ActionListener{
+	Query query;
+	JTable table;
+	JScrollPane p;
+	JTextField input;
+	JLabel label;
+	JButton buttonC,buttonD;
+	String []head= {"学号","姓名","性别","出生","籍贯","专业","班级","联系方式","技能",};
+	String [][]a= {{"","","","","","","","",""}};
+	public Delete() {
+		init();
+		setVisible(true);
+		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
+	}
+	
+	public void init() {
+		setLayout(null);
+		setTitle("删除信息");
+		setBounds(200,200,900,400);
+		input=new JTextField(10);
+		label=new JLabel("输入需要删除信息的学号：");
+		buttonC=new JButton("查找");
+		buttonC.addActionListener(this);
+		
+		add(label);
+		add(input);
+		add(buttonC);
+		
+		label.setBounds(10,10,160,30);
+		input.setBounds(172,10,100,30);
+		buttonC.setBounds(275,10,70,30);
+		
+		table=new JTable(a,head);
+		table.setFont(new Font("宋体",Font.BOLD,16));
+		table.setRowHeight(40);
+		
+		p=new JScrollPane(table);
+		buttonD=new JButton("删除");
+		buttonD.addActionListener(this);
+		
+		add(p);
+		add(buttonD);
+		
+		p.setBounds(10,60,855,90);
+		buttonD.setBounds(10,200,70,30);
+	}
+	
+	public void actionPerformed(ActionEvent e) {
+		if(e.getSource()==buttonC) {
+			try {
+			remove(p);
+			remove(table);
+			query=new Query();
+			query.setSQL("select * from student where 学号='"+input.getText()+"'");
+			query.startQuery();
+			a=query.getRecord();
+			
+			table=new JTable(a,head);
+			table.setFont(new Font("宋体",Font.BOLD,16));
+			table.setRowHeight(40);				
+			p=new JScrollPane(table);				
+			add(p);				
+			p.setBounds(10,60,855,90);
+			}
+			catch(Exception exp) {
+				JOptionPane.showMessageDialog(null,""+exp,"消息对话框",JOptionPane.WARNING_MESSAGE);}
+		}
+		
+		//删除
+		if(e.getSource()==buttonD) {
+			int m=0,n=0;
+			 Connection con;
+			 PreparedStatement sql;
+			 try {
+				 con=DriverManager.getConnection("jdbc:derby:学生信息管理系统;create=false");
+				 String SQL="delete from student where 学号=?";
+				 sql=con.prepareStatement(SQL);
+				 sql.setString(1, a[0][0].trim());
+				 m=sql.executeUpdate();
+				 con.close();
+			 }
+			 catch(SQLException exp) {
+					JOptionPane.showMessageDialog(null,exp,"消息对话框",JOptionPane.WARNING_MESSAGE);}
+				
+			 try {
+				 con=DriverManager.getConnection("jdbc:derby:学生信息管理系统;create=false");
+				 String SQL="delete from zhanghao where account=?";
+				 sql=con.prepareStatement(SQL);
+				 sql.setString(1, a[0][0].trim());
+				 n=sql.executeUpdate();
+				 con.close();
+				}
+				catch(SQLException exp) {
+					JOptionPane.showMessageDialog(null,exp,"消息对话框",JOptionPane.WARNING_MESSAGE);
+				}
+			 
+			 if(m!=0&&n!=0) 
+					JOptionPane.showMessageDialog(null,"删除成功","消息对话框",JOptionPane.WARNING_MESSAGE);
+				else 
+					JOptionPane.showMessageDialog(null,"删除失败","消息对话框",JOptionPane.WARNING_MESSAGE);
+		}
+		
+	}
+}
diff --git a/src/database/He.java b/src/database/He.java
new file mode 100644
index 0000000000000000000000000000000000000000..d44f87e860a0f2ea0d848d15e4cf343615d98e11
--- /dev/null
+++ b/src/database/He.java
@@ -0,0 +1,147 @@
+package database;
+import java.awt.*;
+import java.awt.event.*;
+import javax.swing.*;
+import java.sql.*;
+public class He extends JDialog implements ActionListener{
+	String []head= {"学号","姓名","性别","出生","籍贯","专业","班级","联系方式","技能","密码","身份"};
+	String [][]a= {{"","","","","","","","","","","",}};
+	
+	Query query;
+	JTable table;
+	JScrollPane p;
+	JButton button1,button2;
+	
+	
+	public He() {
+		init();
+		setVisible(true);
+		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
+	}
+	
+	public void init() {
+		setLayout(null);
+		setTitle("审核信息");
+		setBounds(330,250,900,200);
+		
+		query=new Query();
+		query.setSQL("select * from zhuce");
+		query.startQuery();
+		a=query.getRecord();//获得student的数据
+		table=new JTable(a,head);
+		table.setFont(new Font("宋体",Font.BOLD,16));
+		table.setRowHeight(40);
+		
+		p=new JScrollPane(table);
+		button1=new JButton("通过");
+		button1.addActionListener(this);
+		button2=new JButton("拒绝");
+		button2.addActionListener(this);
+		
+		add(p);
+		add(button1);
+		add(button2);
+		
+		p.setBounds(10,10,855,90);
+		button1.setBounds(300,100,70,30);
+		button2.setBounds(450,100,70,30);
+	}
+	
+	public void actionPerformed(ActionEvent e) {
+		int m=0,n=0,x=0;
+		Connection con;
+		PreparedStatement sql;
+		if(e.getSource()==button1) {
+			if(a[0][10].equals("学生")) {
+			try {
+				String uri="jdbc:derby:学生信息管理系统;create=false";
+				con=DriverManager.getConnection(uri);
+				String SQL=
+						"insert into student values(?,?,?,?,?,?,?,?,?)";
+				sql=con.prepareStatement(SQL);
+				sql.setString(1, a[0][0].trim());
+				sql.setString(2, a[0][1].trim());
+				sql.setString(3, a[0][2].trim());
+				sql.setString(4, a[0][3].trim());
+				sql.setString(5, a[0][4].trim());
+				sql.setString(6, a[0][5].trim());
+				sql.setString(7, a[0][6].trim());
+				sql.setString(8, a[0][7].trim());
+				sql.setString(9, a[0][8].trim());
+				m=sql.executeUpdate();
+				con.close();
+			}
+			catch(SQLException exp) {
+				JOptionPane.showMessageDialog(null,""+exp,"消息对话框",JOptionPane.WARNING_MESSAGE);
+		}
+			}
+			
+			//通用
+			try {
+				String uri="jdbc:derby:学生信息管理系统;create=false";
+				con=DriverManager.getConnection(uri);
+				String SQL="insert into zhanghao values(?,?,?)";
+				sql=con.prepareStatement(SQL);
+				sql.setString(1, a[0][0].trim());
+				sql.setString(2, a[0][9].trim());
+				sql.setString(3, a[0][10].trim());
+				n=sql.executeUpdate();
+				con.close();
+			}
+			catch(SQLException exp) {
+				JOptionPane.showMessageDialog(null,""+exp,"消息对话框",JOptionPane.WARNING_MESSAGE);
+		}
+			
+			try {
+				String uri="jdbc:derby:学生信息管理系统;create=false";
+				con=DriverManager.getConnection(uri);
+				String SQL="delete from zhuce where 学号=?";
+				sql=con.prepareStatement(SQL);
+				sql.setString(1, a[0][0].trim());
+				x=sql.executeUpdate();
+				con.close();
+			}
+			catch(SQLException exp) {
+				JOptionPane.showMessageDialog(null,""+exp,"消息对话框",JOptionPane.WARNING_MESSAGE);
+		}
+			if(n!=0&&x!=0)
+				JOptionPane.showMessageDialog(null,""+"操作成功","消息对话框",JOptionPane.WARNING_MESSAGE);
+			else
+				JOptionPane.showMessageDialog(null,""+"操作失败","消息对话框",JOptionPane.WARNING_MESSAGE);
+		
+		}
+
+		if(e.getSource()==button2) {
+			try {
+				String uri="jdbc:derby:学生信息管理系统;create=false";
+				con=DriverManager.getConnection(uri);
+				String SQL="delete from zhuce where 学号=?";
+				sql=con.prepareStatement(SQL);
+				sql.setString(1, a[0][0].trim());
+				x=sql.executeUpdate();
+				con.close();
+			}
+			catch(SQLException exp) {
+				JOptionPane.showMessageDialog(null,""+exp,"消息对话框",JOptionPane.WARNING_MESSAGE);
+		}
+			if(x!=0)
+				JOptionPane.showMessageDialog(null,""+"操作成功","消息对话框",JOptionPane.WARNING_MESSAGE);
+			else
+				JOptionPane.showMessageDialog(null,""+"操作失败","消息对话框",JOptionPane.WARNING_MESSAGE);
+		}
+		//自动刷新表格
+		remove(p);
+		query=new Query();
+		query.setSQL("select * from zhuce");
+		query.startQuery();
+		a=query.getRecord();//获得student的数据
+		table=new JTable(a,head);
+		table.setFont(new Font("宋体",Font.BOLD,16));
+		table.setRowHeight(40);
+		
+		p=new JScrollPane(table);
+		add(p);
+		p.setBounds(10,10,855,90);
+	}
+	
+}
\ No newline at end of file
diff --git a/src/database/Password.java b/src/database/Password.java
new file mode 100644
index 0000000000000000000000000000000000000000..a3b34a9bc57b075546b1149daddbc0a80d695a9c
--- /dev/null
+++ b/src/database/Password.java
@@ -0,0 +1,72 @@
+package database;
+
+import java.awt.*;
+import java.awt.event.*;
+import java.sql.*;
+import javax.swing.*;
+
+/**
+ * 修改密码（老师）
+ * @author lsj
+ *
+ */
+public class Password extends JDialog implements ActionListener{
+	String account="";
+	
+	JTextField input;
+	JLabel label;
+	JButton button;
+	
+	public Password(String account) {
+		this.account=account;
+		init();
+		setVisible(true);
+		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
+	}
+	public void init() {
+		setLayout(null);
+		setTitle("修改密码");
+		setBounds(450,300,350,100);
+		label=new JLabel("请输入新的密码:");
+		button=new JButton("确定");
+		input=new JTextField(25);
+		
+		add(label);
+		add(input);
+		add(button);
+		
+		label.setBounds(10,10,160,30);
+		input.setBounds(120,10,100,30);
+		button.setBounds(230,10,70,30);
+		button.addActionListener(this);
+	}
+	
+	
+	public void actionPerformed(ActionEvent e) {
+		if(e.getSource()==button) {
+			int m=0;
+			Connection con;
+			PreparedStatement sql;
+			try {
+				con=DriverManager.getConnection("jdbc:derby:学生信息管理系统;create=false");
+				String SQL="update zhanghao set password=? where account='"+account+"'";
+				sql=con.prepareStatement(SQL);
+				sql.setString(1, input.getText().trim());
+				m=sql.executeUpdate();
+				con.close();
+				}
+			catch(SQLException exp) {
+				JOptionPane.showMessageDialog(null,exp,"消息对话框",JOptionPane.WARNING_MESSAGE);
+			}
+			 
+			if(m!=0) { 
+				JOptionPane.showMessageDialog(null,"修改成功","消息对话框",JOptionPane.WARNING_MESSAGE);
+				this.dispose();
+			}
+			else 
+				JOptionPane.showMessageDialog(null,"修改失败","消息对话框",JOptionPane.WARNING_MESSAGE);
+		}
+		
+	}
+
+}
diff --git a/src/database/Query.java b/src/database/Query.java
new file mode 100644
index 0000000000000000000000000000000000000000..02233554c34c77f8abedb009dc5ad53d67c19336
--- /dev/null
+++ b/src/database/Query.java
@@ -0,0 +1,69 @@
+package database;
+import java.sql.*;
+
+/**
+ * 查询、提取数据库数据
+ * @author lsj
+ */
+
+public class Query {
+	String databaseName="";//数据库名称
+	String SQL;//SQL语句
+	String [] columnName;//列名
+	String [][] record;//数据项
+	
+	public Query() {
+		try {
+			Class.forName("org.apache.derby.jdbc.EmbeddedDriver");
+		}
+		catch(Exception e) {
+			System.out.println(e);
+		}
+	}
+	//获取SQL语句
+	public void setSQL(String s) {
+		SQL=s.trim();
+	}
+	//返回列名
+	public String [] getColumnName() {
+		return columnName;
+	}
+	//返回数据项
+	public String[][] getRecord(){
+		return record;
+	}
+	
+	public void startQuery() {
+		Connection con;
+		Statement sql;
+		ResultSet rs;
+		try {
+			String uri="jdbc:derby:学生信息管理系统;create=true";
+			con=DriverManager.getConnection(uri);
+			sql=con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_READ_ONLY);
+			rs=sql.executeQuery(SQL);
+			//ResultSet对象rs调用getMetaData()方法返回一个ResultSetMetaData对象（结果集的元数据对象）
+			ResultSetMetaData metaData=rs.getMetaData();
+			int columnCount=metaData.getColumnCount();//字段数目
+			columnName=new String[columnCount];
+			for(int i=1;i<=columnCount;i++) {
+				columnName[i-1]=metaData.getColumnName(i);
+			}
+			rs.last();
+			int recordAmount=rs.getRow();//结果集中的记录，如最后一行为第五行，则recordAmount为5
+			record=new String[recordAmount][columnCount];
+			int i=0;
+			rs.beforeFirst();
+			while(rs.next()) {
+				for(int j=1;j<=columnCount;j++) {
+					record[i][j-1]=rs.getString(j);
+				}
+				i++;
+			}
+			con.close();
+	}
+		catch(SQLException e) {
+			System.out.println("请输入正确的表名"+e);
+		}
+}
+}
diff --git a/src/database/Search.java b/src/database/Search.java
new file mode 100644
index 0000000000000000000000000000000000000000..3da76f53cf54b822649f52fa033c845676d0db7b
--- /dev/null
+++ b/src/database/Search.java
@@ -0,0 +1,99 @@
+package database;
+
+import java.awt.*;
+import java.awt.event.*;
+import java.sql.*;
+import javax.swing.*;
+
+/**
+ * 搜索信息
+ * @author lsj
+ *
+ */
+public class Search extends JDialog implements ActionListener{
+	String s="";
+	JTextField input;
+	JLabel label;
+	JTable table;
+	JButton button,buttonC;
+	JScrollPane p;
+	int i=0;
+	
+	Query query;
+	String SQL="";
+	
+	String record[][]= {{"","","","","","","","","",}};
+	String ziduan[]= {"学号","姓名","性别","出生","籍贯","专业","班级","联系方式","技能",};
+	
+	public Search(String s) {
+		this.s=s;
+		setType();
+		init();
+		setVisible(true);
+		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
+	}
+	public void setType() {
+		if(s.equals("姓名"))
+			label=new JLabel("姓 名：");
+		else if(s.equals("学号"))
+			label=new JLabel("学 号：");
+		else if(s.equals("专业"))
+			label=new JLabel("专 业：");
+		else if(s.equals("班级"))
+			label=new JLabel("班 级：");
+		else if(s.equals("性别"))
+			label=new JLabel("性 别：");
+	}
+	
+	public void init() {
+		setLayout(null);
+		setTitle("搜索信息");
+		setBounds(200,200,900,400);
+		input=new JTextField(20);
+		button=new JButton("查找");
+		button.addActionListener(this);
+		
+		add(label);
+		add(input);
+		add(button);
+		
+		label.setBounds(10,10,160,30);
+		input.setBounds(70,10,100,30);
+		button.setBounds(200,10,70,30);
+	}
+	
+
+	public void actionPerformed(ActionEvent e) {
+		if(e.getSource()==button) {
+			if(i==1) {
+				remove(p);
+				remove(table);
+				remove(buttonC);
+			}
+				query=new Query();
+				query.setSQL("select * from student where "+s+"='"+input.getText()+"'");
+				query.startQuery();
+				record=query.getRecord();
+				ziduan=query.getColumnName();
+						
+				table=new JTable(record,ziduan);
+				table.setFont(new Font("宋体",Font.BOLD,16));
+				table.setRowHeight(40);				
+				p=new JScrollPane(table);				
+				add(p);				
+				p.setBounds(10,60,855,150);
+				
+				buttonC=new JButton("关闭");
+				buttonC.addActionListener(this);
+				add(buttonC);
+				buttonC.setBounds(10,250,70,30);
+				i=1;
+	}
+		
+		
+		if(e.getSource()==buttonC) {
+			this.dispose();
+		}
+	}
+
+}
diff --git a/src/database/Student.java b/src/database/Student.java
new file mode 100644
index 0000000000000000000000000000000000000000..545da6b3bc0f9fced42ee509873d5884e44721ec
--- /dev/null
+++ b/src/database/Student.java
@@ -0,0 +1,167 @@
+package database;
+
+import java.awt.*;
+import java.awt.event.*;
+import javax.swing.*;
+import java.sql.*;
+
+/**
+ * 学生界面
+ * @author lsj
+ *
+ */
+public class Student extends JFrame implements ActionListener{
+	String account="";
+	Query query;
+	JTable table;
+	JScrollPane p;
+	
+	JMenuBar menubar;
+	JMenu menu;
+	JMenuItem item1,item2,item3;
+	JButton rf;//刷新
+	JButton buttonG;//更新
+	int i=0;
+	
+	String []head= {"密码","姓名","性别","出生","籍贯","专业","班级","联系方式","技能",};
+	String [][]a= {{"","","","","","","","",""}};
+	
+	public Student(String account) {
+		this.account=account;
+		setLayout(null);
+		setTitle("学生登录");
+		init();
+		setBounds(300,200,950,300);
+		setVisible(true);
+		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
+	}
+	public void init() {
+		menubar=new JMenuBar();
+		menu=new JMenu("管理");
+		item1=new JMenuItem("查询信息");
+		item1.addActionListener(this);
+		item2=new JMenuItem("修改信息");
+		item2.addActionListener(this);
+		item3=new JMenuItem("切换账号");
+		item3.addActionListener(this);
+		
+		
+		menu.add(item1);
+		menu.add(item2);
+		menu.add(item3);
+		menubar.add(menu);
+		setJMenuBar(menubar);
+	}
+	
+	public void actionPerformed(ActionEvent e) {
+		//查询信息
+		if(e.getSource()==item1||e.getSource()==rf) {
+			if(i==2) {
+				remove(p);
+				remove(buttonG);
+			}
+			if(i==1) {
+				remove(p);
+				remove(rf);
+				JOptionPane.showMessageDialog(null,"刷新成功","消息对话框",JOptionPane.WARNING_MESSAGE);
+			}
+			query=new Query();
+			query.setSQL("select * from student where 学号='"+account+"'");
+			query.startQuery();
+			String []ziduan=query.getColumnName();//获得student的列名
+			String [][]record=query.getRecord();//获得student的数据
+			table=new JTable(record,ziduan);
+			table.setFont(new Font("宋体",Font.BOLD,16));
+			table.setRowHeight(40);
+			p=new JScrollPane(table);
+			rf=new JButton("刷新");
+			rf.addActionListener(this);
+			add(p);
+			add(rf);
+			p.setBounds(10, 10, 900, 80);
+			rf.setBounds(400,100,60,40);
+			rf.addActionListener(this);
+			i=1;
+		}
+		
+		//修改信息界面
+		if(e.getSource()==item2) {
+			query=new Query();
+			query.setSQL("select * from student where 学号='"+account+"'");
+			query.startQuery();
+			a=query.getRecord();
+			
+			//密码
+			query=new Query();
+			query.setSQL("select * from zhanghao where account='"+account+"'");
+			query.startQuery();
+			String record[][]=query.getRecord();
+			a[0][0]=record[0][1].trim();
+			
+			if(i==1) {
+				remove(p);
+				remove(rf);
+			}
+			table=new JTable(a,head);
+			table.setFont(new Font("宋体",Font.BOLD,16));
+			table.setRowHeight(40);				
+			p=new JScrollPane(table);
+			buttonG=new JButton("更新");
+			add(p);	
+			add(buttonG);
+			buttonG.addActionListener(this);
+			p.setBounds(10, 10, 900, 80);
+			buttonG.setBounds(400,100,60,40);
+			i=2;
+		}
+		
+	//修改信息（buttonG)
+		if(e.getSource()==buttonG) {
+			int m=0,n=0;
+			 Connection con;
+			 PreparedStatement sql;
+			 try {
+				 con=DriverManager.getConnection("jdbc:derby:学生信息管理系统;create=false");
+				 String SQL="update student set 姓名=?,性别=?,出生=?,籍贯=?,专业=?,班级=?,联系方式=?,技能=? where 学号='"+account+"'";
+				 sql=con.prepareStatement(SQL);
+				 sql.setString(1, a[0][1].trim());
+				 sql.setString(2, a[0][2].trim());
+				 sql.setString(3, a[0][3].trim());
+				 sql.setString(4, a[0][4].trim());
+				 sql.setString(5, a[0][5].trim());
+				 sql.setString(6, a[0][6].trim());
+				 sql.setString(7, a[0][7].trim());
+				 sql.setString(8, a[0][8].trim());
+				 m=sql.executeUpdate();
+				 con.close();
+				}
+				catch(SQLException exp) {
+					JOptionPane.showMessageDialog(null,exp,"消息对话框",JOptionPane.WARNING_MESSAGE);
+				}
+			 
+			 try {
+				 con=DriverManager.getConnection("jdbc:derby:学生信息管理系统;create=false");
+				 String SQL="update zhanghao set password=? where account='"+account+"'";
+				 sql=con.prepareStatement(SQL);
+				 sql.setString(1, a[0][0].trim());
+				 n=sql.executeUpdate();
+				 con.close();
+				}
+				catch(SQLException exp) {
+					JOptionPane.showMessageDialog(null,exp,"消息对话框",JOptionPane.WARNING_MESSAGE);
+				}
+			 
+			 if(m!=0&&n!=0) 
+					JOptionPane.showMessageDialog(null,"更新成功","消息对话框",JOptionPane.WARNING_MESSAGE);
+				else 
+					JOptionPane.showMessageDialog(null,"更新失败","消息对话框",JOptionPane.WARNING_MESSAGE);
+		}
+		
+		//重新登录
+		if(e.getSource()==item3) {
+			this.dispose();
+			new SystemLogin();
+		}
+	}
+	
+}
\ No newline at end of file
diff --git a/src/database/SystemLogin.java b/src/database/SystemLogin.java
new file mode 100644
index 0000000000000000000000000000000000000000..765917bbf945708d11552b9475aa9c9aef228750
--- /dev/null
+++ b/src/database/SystemLogin.java
@@ -0,0 +1,99 @@
+package database;
+
+import java.awt.*;
+import java.awt.event.*;
+import javax.swing.*;
+
+
+/**
+ * 系统登录界面
+ * @author lsj
+ *
+ */
+
+public class SystemLogin extends JFrame implements ActionListener{
+	JTextField account,password;
+	JButton t,f;
+	Query query;
+	String s;//记录登陆者身份
+	public SystemLogin() {
+		init(); 
+		setVisible(true);
+		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
+	}
+	public void init() {
+		setLayout(null);
+		setTitle("系统登录");
+		setBounds(450,200,350,200);
+		JLabel a=new JLabel("学号/工号:");
+		JLabel b=new JLabel("密   码:");
+		a.setFont(new Font("宋体",Font.BOLD,20));
+		b.setFont(new Font("宋体",Font.BOLD,20));
+		account=new JTextField(15);
+		password=new JTextField(15);
+		
+		t=new JButton("注册");
+		f=new JButton("登录");
+		//使用BoxLayout,分为2行2列
+		
+		add(a);
+		add(b);
+		add(f);
+		add(t);
+		add(password);
+		add(account);
+		
+		a.setBounds(30,30,150,30);
+		b.setBounds(30,70,200,30);
+		account.setBounds(150,30,150,30);
+		password.setBounds(150,70,150,30);
+		t.setBounds(60,110,70,30);
+		f.setBounds(190,110,70,30);
+		
+		f.addActionListener(this);
+		t.addActionListener(this);
+	}
+	
+	public void actionPerformed(ActionEvent e) {
+		if(e.getSource()==f) {
+		String SQL="select * from zhanghao";
+		query=new Query();
+		try {
+			query.setSQL(SQL);
+			query.startQuery();
+			String [][]record=query.getRecord();//获得zhanghao的数据
+			int m=0;
+			for(int i=0;i<=record.length;i++) {
+				if(account.getText().equals(record[i][0].trim())) {
+					if(password.getText().equals(record[i][1].trim())) {
+						s=record[i][2].trim();
+						m=1;
+						break;
+					}
+				}				
+			}
+			if(m==0) {
+				JOptionPane.showMessageDialog(null,"账号或密码错误","消息对话框",JOptionPane.WARNING_MESSAGE);
+			}
+			else if(s.equals("老师")) {
+				this.dispose();
+				new Teacher(account.getText());
+			}
+			else if(s.equals("学生")){
+				this.dispose();
+				new Student(account.getText());
+			}
+			else if(s.equals("管理员")) {
+				this.dispose();
+				new Administrator(account.getText());
+			}
+		}
+		catch(Exception exp) {}
+		}
+		
+		//注册
+		if(e.getSource()==t) {
+			new Zhuce(account.getText());
+		}
+	}
+}
diff --git a/src/database/Teacher.java b/src/database/Teacher.java
new file mode 100644
index 0000000000000000000000000000000000000000..9f1c97e96f0cdfa991604ddc05f5a5d352a25d52
--- /dev/null
+++ b/src/database/Teacher.java
@@ -0,0 +1,139 @@
+package database;
+
+import java.awt.*;
+import java.awt.event.*;
+import javax.swing.*;
+import java.sql.*;
+
+/**
+ * 学生界面
+ * @author lsj
+ *
+ */
+public class Teacher extends JFrame implements ActionListener{
+	String account="";
+	Query query;
+	JTable table;
+	JScrollPane p;
+	JTextField input;
+	JLabel label;
+	
+	JMenuBar menubar;
+	JMenu menu,subMenu;
+	JMenuItem item1,item2,item3,item4,item5,item6,item7,item8;
+	JButton rf;//刷新
+	JButton buttonG;//更新
+	int i=0;
+	
+	public Teacher(String account) {
+		this.account=account;
+		setLayout(null);
+		setTitle("老师登录");
+		init();
+		setBounds(300,200,950,300);
+		setVisible(true);
+		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
+	}
+	
+	public void init() {
+		menubar=new JMenuBar();
+		menu=new JMenu("管理");
+		item1=new JMenuItem("查询信息");
+		item1.addActionListener(this);
+		subMenu=new JMenu("搜索信息");
+		subMenu.addActionListener(this);
+		item2=new JMenuItem("按姓名搜索");
+		item2.addActionListener(this);
+		item3=new JMenuItem("按学号搜索");
+		item3.addActionListener(this);
+		item4=new JMenuItem("按班级搜索");
+		item4.addActionListener(this);
+		item5=new JMenuItem("按专业搜索");
+		item5.addActionListener(this);
+		item6=new JMenuItem("按性别搜索");
+		item6.addActionListener(this);
+		item7=new JMenuItem("修改密码");
+		item7.addActionListener(this);
+		item8=new JMenuItem("切换账号");
+		item8.addActionListener(this);
+		
+		subMenu.add(item2);
+		subMenu.add(item3);
+		subMenu.add(item4);
+		subMenu.add(item5);
+		subMenu.add(item6);
+		
+		menu.add(item1);
+		menu.add(subMenu);
+		menu.add(item7);
+		menu.add(item8);
+		menubar.add(menu);
+		setJMenuBar(menubar);
+	}
+	
+	
+	public void actionPerformed(ActionEvent e) {
+		//查询信息
+		if(e.getSource()==item1||e.getSource()==rf) {
+			if(i==2) {
+				remove(p);
+				remove(buttonG);
+			}
+			if(i==1) {
+				remove(p);
+				remove(rf);
+				JOptionPane.showMessageDialog(null,"刷新成功","消息对话框",JOptionPane.WARNING_MESSAGE);
+			}
+			
+			query=new Query();
+			query.setSQL("select * from student");
+			query.startQuery();
+			String []ziduan=query.getColumnName();//获得student的列名
+			String [][]record=query.getRecord();//获得student的数据
+			table=new JTable(record,ziduan);
+			table.setFont(new Font("宋体",Font.BOLD,16));
+			table.setRowHeight(40);
+			p=new JScrollPane(table);
+			rf=new JButton("刷新");
+			rf.addActionListener(this);
+			add(p);
+			add(rf);
+			p.setBounds(10, 10, 900, 150);
+			rf.setBounds(400,200,60,40);
+			rf.addActionListener(this);
+			i=1;
+		}
+		
+		//按名字搜索
+		if(e.getSource()==item2) {
+			new Search("姓名");
+		}
+		//按学号搜索
+		if(e.getSource()==item3) {
+			new Search("学号");
+		}
+		//按班级搜索
+		if(e.getSource()==item4) {
+			new Search("班级");
+		}
+		//按专业搜索
+		if(e.getSource()==item5) {
+			new Search("专业");
+		}
+		//按性别搜索
+		if(e.getSource()==item6) {
+			new Search("性别");
+		}
+		
+		//修改密码
+		if(e.getSource()==item7) {
+			new Password(account);
+		}
+		//重新登录
+		if(e.getSource()==item8) {
+			this.dispose();
+			new SystemLogin();
+		}
+	}
+
+}
diff --git a/src/database/Update.java b/src/database/Update.java
new file mode 100644
index 0000000000000000000000000000000000000000..352289343dd21d86f8025986ee4b6a6ed009e86b
--- /dev/null
+++ b/src/database/Update.java
@@ -0,0 +1,140 @@
+package database;
+
+import java.awt.*;
+import java.awt.event.*;
+import java.sql.*;
+import javax.swing.*;
+
+/**
+ * 更新信息
+ * @author lsj
+ *
+ */
+public class Update extends JDialog implements ActionListener{
+	Query query;
+	JTable table;
+	JScrollPane p;
+	JTextField input;
+	JLabel label;
+	
+	JButton buttonC,buttonG;
+	String []head= {"密码","姓名","性别","出生","籍贯","专业","班级","联系方式","技能",};
+	String [][]a= {{"","","","","","","","",""}};
+	
+	public Update() {
+		init();
+		setVisible(true);
+		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
+	}
+	public void init() {
+		setLayout(null);
+		setTitle("更改信息");
+		setBounds(200,200,900,400);
+		input=new JTextField(10);
+		label=new JLabel("输入需要更改信息的学号：");
+		buttonC=new JButton("查找");
+		buttonC.addActionListener(this);
+		
+		add(label);
+		add(input);
+		add(buttonC);
+		
+		label.setBounds(10,10,160,30);
+		input.setBounds(172,10,100,30);
+		buttonC.setBounds(275,10,70,30);
+		
+		table=new JTable(a,head);
+		table.setFont(new Font("宋体",Font.BOLD,16));
+		table.setRowHeight(40);
+		
+		p=new JScrollPane(table);
+		buttonG=new JButton("更新");
+		buttonG.addActionListener(this);
+		
+		add(p);
+		add(buttonG);
+		
+		p.setBounds(10,60,855,90);
+		buttonG.setBounds(10,200,70,30);
+	}
+	
+	public void Check() {
+		try {
+			query=new Query();
+			query.setSQL("select * from student where 学号='"+input.getText()+"'");
+			query.startQuery();
+			a=query.getRecord();
+			
+			//密码
+			query=new Query();
+			query.setSQL("select * from zhanghao where account='"+input.getText()+"'");
+			query.startQuery();
+			String record[][]=query.getRecord();
+			a[0][0]=record[0][1].trim();
+		}
+		catch(Exception exp) {
+			JOptionPane.showMessageDialog(null,""+exp,"消息对话框",JOptionPane.WARNING_MESSAGE);
+	}
+	}
+	public void actionPerformed(ActionEvent e) {
+		//查找
+		if(e.getSource()==buttonC) {
+			try {
+				Check();
+				remove(p);
+				remove(table);		
+				table=new JTable(a,head);
+				table.setFont(new Font("宋体",Font.BOLD,16));
+				table.setRowHeight(40);				
+				p=new JScrollPane(table);				
+				add(p);				
+				p.setBounds(10,60,855,90);
+		}
+			catch(Exception exp) {
+				JOptionPane.showMessageDialog(null,""+exp,"消息对话框",JOptionPane.WARNING_MESSAGE);}
+	}
+		
+		//更新
+		if(e.getSource()==buttonG) {
+			int m=0,n=0;
+			 Connection con;
+			 PreparedStatement sql;
+			 try {
+				 con=DriverManager.getConnection("jdbc:derby:学生信息管理系统;create=false");
+				 String SQL="update student set 姓名=?,性别=?,出生=?,籍贯=?,专业=?,班级=?,联系方式=?,技能=? where 学号='"+input.getText()+"'";
+				 sql=con.prepareStatement(SQL);
+				 sql.setString(1, a[0][1].trim());
+				 sql.setString(2, a[0][2].trim());
+				 sql.setString(3, a[0][3].trim());
+				 sql.setString(4, a[0][4].trim());
+				 sql.setString(5, a[0][5].trim());
+				 sql.setString(6, a[0][6].trim());
+				 sql.setString(7, a[0][7].trim());
+				 sql.setString(8, a[0][8].trim());
+				 m=sql.executeUpdate();
+				 con.close();
+				}
+				catch(SQLException exp) {
+					JOptionPane.showMessageDialog(null,exp,"消息对话框",JOptionPane.WARNING_MESSAGE);
+				}
+			 
+			 try {
+				 con=DriverManager.getConnection("jdbc:derby:学生信息管理系统;create=false");
+				 String SQL="update zhanghao set password=? where account='"+input.getText()+"'";
+				 sql=con.prepareStatement(SQL);
+				 sql.setString(1, a[0][0].trim());
+				 n=sql.executeUpdate();
+				 con.close();
+				}
+				catch(SQLException exp) {
+					JOptionPane.showMessageDialog(null,exp,"消息对话框",JOptionPane.WARNING_MESSAGE);
+				}
+			 
+			 if(m!=0&&n!=0) 
+					JOptionPane.showMessageDialog(null,"更新成功","消息对话框",JOptionPane.WARNING_MESSAGE);
+				else 
+					JOptionPane.showMessageDialog(null,"更新失败","消息对话框",JOptionPane.WARNING_MESSAGE);
+				
+		}
+	}
+}
diff --git a/src/database/Window.java b/src/database/Window.java
new file mode 100644
index 0000000000000000000000000000000000000000..476c05b4d63fdaa863a9f63ea1a1a9f2144fef08
--- /dev/null
+++ b/src/database/Window.java
@@ -0,0 +1,10 @@
+package database;
+
+public class Window {
+
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+		new SystemLogin();
+	}
+
+}
diff --git a/src/database/Zhuce.java b/src/database/Zhuce.java
new file mode 100644
index 0000000000000000000000000000000000000000..31ea2d423dadee7244e6a4280d9c57d6e06323e9
--- /dev/null
+++ b/src/database/Zhuce.java
@@ -0,0 +1,88 @@
+package database;
+import java.awt.*;
+import java.awt.event.*;
+import javax.swing.*;
+import java.sql.*;
+
+/**
+ * 注册界面
+ * @author lsj
+ *
+ */
+public class Zhuce extends JDialog implements ActionListener{
+	String account="";
+	String []head= {"学号/工号","姓名","性别","出生","籍贯","专业","班级","联系方式","技能","密码","身份"};
+	String [][]a= {{"","","","","","","","","","","",}};
+	
+	JTable table;
+	JScrollPane p;
+	JButton button;
+	JLabel label;
+	
+	public Zhuce(String account) {
+		this.account=account;
+		a[0][0]=account;
+		init();
+		setVisible(true);
+		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
+	}
+	public void init() {
+		setLayout(null);
+		setTitle("注册账号");
+		setBounds(200,200,900,200);
+		
+		table=new JTable(a,head);
+		table.setFont(new Font("宋体",Font.BOLD,16));
+		table.setRowHeight(40);
+		
+		p=new JScrollPane(table);
+		button=new JButton("注册");
+		button.addActionListener(this);
+		label=new JLabel("(若注册老师或管理员账号，则只需填写工号，出生，密码，身份四个信息)");
+		
+		add(p);
+		add(button);
+		add(label);
+		
+		p.setBounds(10,10,855,90);
+		button.setBounds(350,100,70,30);
+		label.setBounds(200, 140, 450, 20);
+	}
+	
+	public void actionPerformed(ActionEvent e) {
+		int m=0;
+		Connection con;
+		PreparedStatement sql;
+		if(a[0][10].equals("学生")||a[0][10].equals("老师")||a[0][10].equals("管理员")) {
+		
+		try {
+			 con=DriverManager.getConnection("jdbc:derby:学生信息管理系统;create=false");
+			 String SQL="insert into zhuce values(?,?,?,?,?,?,?,?,?,?,?)";
+			 sql=con.prepareStatement(SQL);
+			 sql.setString(1, a[0][0].trim());
+			 sql.setString(2, a[0][1].trim());
+			 sql.setString(3, a[0][2].trim());
+			 sql.setString(4, a[0][3].trim());
+			 sql.setString(5, a[0][4].trim());
+			 sql.setString(6, a[0][5].trim());
+			 sql.setString(7, a[0][6].trim());
+			 sql.setString(8, a[0][7].trim());
+			 sql.setString(9, a[0][8].trim());
+			 sql.setString(10, a[0][9].trim());
+			 sql.setString(11, a[0][10].trim());
+			 m=sql.executeUpdate();
+			 con.close();
+			}
+			catch(SQLException exp) {
+				JOptionPane.showMessageDialog(null,exp,"消息对话框",JOptionPane.WARNING_MESSAGE);
+			}
+		if(m!=0) {
+			JOptionPane.showMessageDialog(null,"注册成功，等待审核","消息对话框",JOptionPane.WARNING_MESSAGE);
+			this.dispose();}
+	else {
+			JOptionPane.showMessageDialog(null,"注册失败","消息对话框",JOptionPane.WARNING_MESSAGE);}
+	}
+	else
+		JOptionPane.showMessageDialog(null,"注册失败，请输入正确的身份","消息对话框",JOptionPane.WARNING_MESSAGE);
+	}
+}