更新的学生类

package student;

import java.awt.event.*;
import java.util.LinkedList;
import java.awt.*;

public class  StudentClass {
	public static void main(String args[])
    {
        new StudentFrame();
    } 
}

class StudentFrame extends Frame implements ActionListener,ItemListener{

	Label prompt1, prompt2, prompt3, prompt4, prompt5, prompt6, prompt7, prompt8, prompt9,prompt10;
	TextField input1,input2,input3,input4,input5,input6,input7;
	TextArea output;
	CheckboxGroup style1,style2;
	Checkbox stu,tea,man,woman;
	Button btn,btn1,btn2,btn3,btn4,btn5,btn6;
	
	String name,identity,sex,mailbox,professions,courses,id,tel,salary;//姓名 身份 性别 邮箱 专业 课程
	//学号 电话 薪水
	Boolean stuOrtea,manOrwoman;
	
	LinkedList<Student>  students =new LinkedList<Student>();
	LinkedList<Student>  teachers =new LinkedList<Student>();
	
	StudentFrame(){
		super("学生教师application");
		prompt1 = new Label("姓           名：");
		prompt2 = new Label("学号/工号：");
		prompt3 = new Label("身           份：");
		prompt4 = new Label("性           别：");
		prompt5 = new Label("专           业：");
		prompt6 = new Label("所 修 课 程：");
		prompt7 = new Label("联 系 电 话：");
		prompt8 = new Label("邮           箱：");
		prompt9 = new Label("工           资：");
		prompt10 = new Label("信 息 输 出 文 本 框 ：");
		
		input1 = new TextField(20);
		input2 = new TextField(20);
		input3 = new TextField(20);
		input4 = new TextField(20);
		input5= new TextField(20);
		input6 = new TextField(20);
		input7 = new TextField("无",20);
		output = new TextArea("在修改信息前请先通过学号查寻到需要"+"\n"+"修改信息的个人，然后在相应的文本框"
				+"\n"+ "中修改信息，本程序只支持修改"+"\n"+"非（姓名，性别，身份，学号）"+"\n只支持通过学号或工号查找",10,30);
		style1 = new CheckboxGroup();
		style2 = new CheckboxGroup();
		
		stu = new Checkbox("学生          ", false,style1);
		tea = new Checkbox("教师          ", false,style1);
		man = new Checkbox("男               ", false,style2);
		woman = new Checkbox("女              ", false,style2);
		
		btn = new Button("加入信息");
		btn1 = new Button("修改信息");
		btn2 = new Button("学号查询");
		btn3 = new Button("输出所有");
		btn4 = new Button("删除信息");
		btn5 = new Button("专业查询");
		btn6 = new Button("姓名查询");
		
		output.setBackground(Color.lightGray);
		output.setForeground(Color.blue);
		setLayout(new FlowLayout());//少不得，否则add添加的东西会一一覆盖，最后只有最后一个add能显示
		setSize(300,550);
		setBackground(Color.lightGray);
        setVisible(true);
        add(prompt1);   add(input1);
        add(prompt2);   add(input2);
        add(prompt3);   add(stu);add(tea);
        add(prompt4);   add(man);add(woman);
        add(prompt5);   add(input3);
        add(prompt6);   add(input4);
        add(prompt7);   add(input5);
        add(prompt8);   add(input6);
        add(prompt9);   add(input7);
        add(prompt10);  add(output);    
        add(btn);
        add(btn4);
        add(btn1);
        add(btn6);
        add(btn2);
        add(btn5);
        add(btn3);
        
        addWindowListener(new windowsClose());
        btn.addActionListener(this);
        btn1.addActionListener(this);
        btn2.addActionListener(this);
        btn3.addActionListener(this);
        btn4.addActionListener(this);
        btn5.addActionListener(this);
        btn6.addActionListener(this);
        
        btn.setBackground(Color.lightGray);
        btn1.setBackground(Color.lightGray);
        btn2.setBackground(Color.lightGray);
        btn3.setBackground(Color.lightGray);
        btn4.setBackground(Color.lightGray);
        btn5.setBackground(Color.lightGray);
        btn6.setBackground(Color.lightGray);
        
        stu.addItemListener(this);
        tea.addItemListener(this);
        man.addItemListener(this);
        woman.addItemListener(this);
        
        input1.addFocusListener(new HandleFocus());
        input2.addFocusListener(new HandleFocus());
        input3.addFocusListener(new HandleFocus());
        input4.addFocusListener(new HandleFocus());
        input5.addFocusListener(new HandleFocus());
        input6.addFocusListener(new HandleFocus());
        input7.addFocusListener(new HandleFocus());
        
	}//构造函数
	
	private void setBackground(String string) {
		// TODO Auto-generated method stub
		
	}

	public void actionPerformed(ActionEvent e) {
		
		name = input1.getText();
		id = input2.getText();
		professions = input3.getText();
		courses = input4.getText();
		tel = input5.getText();
		mailbox = input6.getText();
		salary = input7.getText();
		
		 
		if(e.getSource()==btn) {//如果是加入按钮触发
		try{
			if(stuOrtea) {//如果是学生
		    Student stude = new Student(name, identity, sex, mailbox, professions, courses, id, tel);	
		   if( StudentList.addStudent(students, stude))//像链表students中加入一个Student类的引用
		    output.setText(StudentList.getStudent(students, id).getsAll());//在文本框中输出刚加入的信息
		   else
			   output.setText("该学号已存在！");
		}else {//如果是教师
			Student stude = new Student(name, identity, sex, mailbox, professions, courses, id, tel,salary);
			 if(StudentList.addStudent(teachers, stude))
			output.setText(StudentList.getStudent(teachers, id).gettAll());
			 else
				 output.setText("该工号已存在！");	 
		}
		}catch(Exception e1){
			output.setText("未输入信息。。。");
		}
		}else
			if(e.getSource()==btn1) {//如果触发修改按钮
				if(StudentList.seekIdAll(students, id)) {
					Student p = StudentList.getStudent(students, id);
				p.setsall( mailbox, professions, courses, tel);
				output.setText(p.getsAll());
				}
				else if(StudentList.seekIdAll(teachers, id)){
					Student p = StudentList.getStudent(teachers, id);
					p.settall(mailbox, professions, courses, tel,salary);
					output.setText(p.gettAll());
				}
			}else
				if(e.getSource()==btn2) {//如果触发学号查询按钮                 
					if(StudentList.seekIdAll(students, id)) {
						Student p = StudentList.getStudent(students, id);
						input1.setText(p.getName());
						input3.setText(p.getProfessions());
						input4.setText(p.getCourses());
						input5.setText(p.getTel());
						input6.setText(p.getMailbox());
						
						output.setText(p.getsAll());
					}
					else 
						if(StudentList.seekIdAll(teachers, id)){
							Student p = StudentList.getStudent(teachers, id);
							input1.setText(p.getName());
							input3.setText(p.getProfessions());
							input4.setText(p.getCourses());
							input5.setText(p.getTel());
							input6.setText(p.getMailbox());
							input7.setText(p.getSalary());
							
						output.setText(p.gettAll());
					}else {
						output.setText("查无此人！");
					}
		   }else
				if(e.getSource()==btn3) {//如果触发输出所有按钮
					if(StudentList.isExit(students)){
					output.setText("以下是学生的全部信息："+"\n");
					for (Student st: students)
						output.append(st.getsAll());
					}else{
						output.setText("未查找到任何学生信息。。。"+"\n");
					}
					if(StudentList.isExit(teachers)){
					output.append("以下是教师的全部信息："+"\n");
					for (Student st: teachers) 
						output.append(st.gettAll());
					}else{
						output.append("未查找到任何教师信息。。。"+"\n");
					}
				}else
					if(e.getSource()==btn4) {//如果触发删除信息按钮
						if(StudentList.seekIdAll(students, id)) {
						StudentList.deleteStudent(students, id);
						}else
							if(StudentList.seekIdAll(teachers, id)) {
						StudentList.deleteStudent(teachers, id);
						}else {
							output.setText("查无此人！");
						}
					}else
						if(e.getSource()==btn5) {//如果触发专业查询按钮
							output.setText("");
							if(StudentList.seekProfessionsAll(students, professions)){
								for(Student st: students)
									if(st.getProfessions().equals(professions))
										output.append(st.getsAll());
								}else{
									output.append("此专业无学生信息。。。\n");
								}
								if(StudentList.seekProfessionsAll(teachers, professions)){
									for(Student st: teachers)
										if(st.getProfessions().equals(professions))
											output.append(st.gettAll());
								}else{
									output.append("此专业无教师信息。。。\n");
								}
						}else
							if(e.getSource()==btn6) {//如果触发姓名查询按钮                 
								if(StudentList.seekNameAll(students, name)) {
									Student p = StudentList.getStudentName(students, name);
									input2.setText(p.getId());
									input3.setText(p.getProfessions());
									input4.setText(p.getCourses());
									input5.setText(p.getTel());
									input6.setText(p.getMailbox());
									
									output.setText(p.getsAll());
								}
								else 
									if(StudentList.seekNameAll(teachers, name)){
										Student p = StudentList.getStudentName(teachers, name);
										input2.setText(p.getId());
										input3.setText(p.getProfessions());
										input4.setText(p.getCourses());
										input5.setText(p.getTel());
										input6.setText(p.getMailbox());
										input7.setText(p.getSalary());
										
									output.setText(p.gettAll());
								}else {
									output.setText("查无此人！");
								}
					   }
		
		
		
	}
	public void itemStateChanged(ItemEvent e) {
		
		Checkbox temp = (Checkbox)(e.getSource());
		if(temp.getLabel()=="学生          ") {
			stuOrtea = true;
			identity = "学生";
		}else 
			if(temp.getLabel()=="教师          "){
				stuOrtea = false;
				identity = "教师";
		}else 
			if(temp.getLabel()=="男               "){
				manOrwoman = true;
				sex = "男";
		}else 
			if(temp.getLabel()=="女              "){
				manOrwoman = false;
				sex = "女";
		}
		
	}
	class HandleFocus implements FocusListener{
		
		public void focusGained(FocusEvent e) {
			TextField q = (TextField )(e.getSource());//将引发文本事件的事件源强制转换为文本类型
			q.setText("");//将引发文本事件的文本设置为空
			q.setBackground(Color.blue);
		}

		@Override
		public void focusLost(FocusEvent e) {
			TextField q = (TextField )(e.getSource());//将引发文本事件的事件源强制转换为文本类型
			q.setForeground(Color.green);//将引发文本事件的文本设置为空
			q.setBackground(Color.white);
			
		}
		
	}
	
	class windowsClose extends WindowAdapter{//window监视执行函数
    	public void windowClosing(WindowEvent e)
    	{
    		dispose();
    		System.exit(0);
    		
    	}  	
    }//end of winC
	
}//end of StufentFrame

class Student{
	
	String name,identity,sex,mailbox,professions,courses,id,tel,salary;//姓名 身份 性别 邮箱 专业 课程
	//学号 电话 薪水
  
	Student(String a,String b,String c,String d,String f, String g,String h,String j,String k){
		name = a;
		identity = b;
		sex = c;
		mailbox = d;
		professions = f;
		courses = g;
		id = h;
		tel = j;
		salary = k;
     }
	
	Student(String a,String b,String c,String d,String f, String g,String h,String j){
		name = a;
		identity = b;
		sex = c;
		mailbox = d;
		professions = f;
		courses = g;
		id = h;
		tel = j;          
     }
	//用于输出全部信息
	String getsAll() {
		String s = new String("姓名："+name+"\n"+"学号："+id+"\n"+"身份："+identity+"\n"+"性别："+sex+"\n"+"专业："+professions+"\n"+"所修课程："+courses+"\n"+"联系电话："+tel+"\n"+"邮箱："+mailbox+"\n"+"\n");
		 return s;
	 }
	String gettAll() {
		String s = new String("姓名："+name+"\n"+"工号："+id+"\n"+"身份："+identity+"\n"+"性别："+sex+"\n"+"专业："+professions+"\n"+"所授课程："+courses+"\n"+"联系电话："+tel+"\n"+"邮箱："+mailbox+"\n"+"薪水："+salary+"\n"+"\n");
		 return s;
	 }
	//用于修改信息
/*	String setsAll(String a,String b,String c,String d,String f, String g,String h,String j) {
		name = a;
		identity = b;
		sex = c;
		mailbox = d;
		professions = f;
		courses = g;
		id = h;
		tel = j;   
		
		String s = new String("姓名："+name+"\n"+"学号："+id+"\n"+"身份："+identity+"\n"+"性别："+sex+"\n"+"专业："+professions+"\n"+"所修课程："+courses+"\n"+"联系电话："+tel+"\n"+"邮箱："+mailbox+"\n"+"\n");
		 return s;
	 }
	String settAll(String a,String b,String c,String d,String f, String g,String h,String j,String k) {
		name = a;
		identity = b;
		sex = c;
		mailbox = d;
		professions = f;
		courses = g;
		id = h;
		tel = j;
		salary = k;
		
		String s = new String("姓名："+name+"\n"+"工号："+id+"\n"+"身份："+identity+"\n"+"性别："+sex+"\n"+"专业："+professions+"\n"+"所授课程："+courses+"\n"+"联系电话："+tel+"\n"+"邮箱："+mailbox+"\n"+"薪水："+salary+"\n"+"\n");
		 return s;
	 }*/
	String setsall(String d,String f, String g,String j) {

		mailbox = d;
		professions = f;
		courses = g;
		tel = j;   
		
		String s = new String("联系方式："+tel+"\n"+"邮箱："+mailbox+"\n"+"专业："+professions+"\n"+"所修课程："+courses+"\n"+"\n");
		 return s;
	 }
	String settall(String d,String f, String g,String j,String k) {
		
		mailbox = d;
		professions = f;
		courses = g;
		tel = j;
		salary = k;
		
		String s = new String("联系方式："+tel+"\n"+"邮箱："+mailbox+"\n"+"专业："+professions+"\n"+"所授课程："+courses+"\n"+"薪水："+salary+"\n"+"\n");
		 return s;
	 }
	
	 String getName() {//获取名字
		 return name;
	 }
	 String setName(String a) {//修改名字
		 name = a;
		 return name;
	 }
	 
	 String getIdentity() {//获取身份
		 return identity;
	 }
	 String setIdentity(String b) {//修改身份
		 identity = b;
		 return identity;
	 }
	 
	 String getSex() {//获取性别
		 return sex;
	 }
	 String setSex(String c) {//修改性别
		 sex = c;
		 return sex;
	 }
	 
	 String getProfessions() {//获取专业
		 return professions;
	 }
	 String setProfessionsx(String f) {//修改专业
		 professions = f;
		 return professions;
	 }
	 
	 String getMailbox() {//获取邮箱
		 return mailbox;
	 }
	 String setMailbox(String d) {//修改邮箱
		 mailbox = d;
		 return mailbox;
	 } 
	 String getCourses() {//获取课程
		 return courses;
	 }
	 String setCourses(String g) {//修改课程
		 courses = g;
		 return courses;
	 } 
	 String getId() {//获取学号
		 return id;
	 }
	 String setId(String h) {//修改学号
		 id = h;
		 return id;
	 } 
	 String getTel() {//获取电话号码
		 return tel;
	 }
	 String setTel(String j) {//修改号码
		 tel = j;
		 return tel;
	 } 
	 String getSalary() {//获取薪水
		 return salary;
	 }
	 String setSalary(String k) {//修改薪水
		 salary = k;
		 return salary;
	 }
	 
}//end of 
class StudentList {
	
	public static Boolean addStudent(LinkedList<Student> stu, Student s) {
		for(Student st:stu){
			if(st.getId().equals(s.getId()))
				return false;
		}
		stu.add(s);
		return true;
		}
	
	public static void deleteStudent(LinkedList<Student> stu, String no) {
		Student student = null;
		for (Student s: stu) {    //遍历链表stu里的每个元素
		if (no != null && s.getId().equals(no)) {
		student = s;
		break;
		}
		}
		if (student != null) {
			stu.remove(student);
		}		
   }
	
	public static Student getStudent(LinkedList<Student> stu, String id) {
		Student student = null;
		for (Student st: stu) {    //遍历链表stu里的每个元素
			if(id != null && st.getId().equals(id))//通过学号查找
			{
			student = st;
			break;
			}
			}
		return student;
		}
	public static Student getStudentName(LinkedList<Student> stu, String name) {
		Student student = null;
		for (Student st: stu) {    //遍历链表stu里的每个元素
			if(name != null && st.getName().equals(name))//通过学号查找
			{
			student = st;
			break;
			}
			}
		return student;
		}
	public static Boolean seekIdAll(LinkedList<Student> stu, String id) {//查询链表中是否有id
			Boolean correct = false;
		for (Student st: stu) {    //遍历链表stu里的每个元素			
				if(id != null && st.getId().equals(id))//通过学号查找
				{
					correct = true;	
					break;
				}
		}
		return correct;
    }
	public static Boolean seekProfessionsAll(LinkedList<Student> stu, String professions) {//查询链表中是否有professions
		Boolean correct = false;
	for (Student st: stu) {    //遍历链表stu里的每个元素			
			if(professions != null && st.getProfessions().equals(professions))//通过专业查找
			{
				correct = true;	
				break;
			}
	}
	return correct;
}
	public static Boolean seekNameAll(LinkedList<Student> stu, String name) {//查询链表中是否有name
		Boolean correct = false;
	for (Student st: stu) {    //遍历链表stu里的每个元素			
			if(name != null && st.getName().equals(name))//通过专业查找
			{
				correct = true;	
				break;
			}
	}
	return correct;
}
	public static Boolean isExit(LinkedList<Student> stu){//判断链表是否为空,如果为空返回false；不为空返回true;
		if(stu.size()==0)
			return false;
		else 
			return true;		
	}
}//end of StudentList