小结

package com.frame.project;//主窗口

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.Reader;
import java.util.ArrayList;
import java.util.List;

import javax.swing.JFrame;
import javax.swing.JOptionPane;

import com.lovo.netCRM.component.LovoButton;
import com.lovo.netCRM.component.LovoTable;

public class MainFrame extends JFrame {
    private LovoTable table = new LovoTable(this, new String[] { "学号", "姓名", "性别", "学历" },
            new String[] { "code", "name", "sex", "edu" }, null);
    public static List<StudentBean> list=FilePress.read();
    public MainFrame() {
        this.setLayout(null);
        table.setSizeAndLocation(50, 50, 600, 300);
        table.updateLovoTable(list);
        LovoButton addButton=new LovoButton("添加", 50, 400, this);
        addButton.addActionListener(new ActionListener() {
            
            @Override
            public void actionPerformed(ActionEvent arg0) {
                MainFrame.this.dispose();
                new addFrame();
                
            }
        });
        LovoButton delButton=new LovoButton("删除", 150, 400, this);
        delButton.addActionListener(new ActionListener() {
            
            @Override
            public void actionPerformed(ActionEvent arg0) {
                int row=table.getSelectedRow();
                if(row==-1)
                {
                    JOptionPane.showMessageDialog(null, "请选择行");
                    return ;
                }
                list.remove(row);
                FilePress.write(list);
                table.updateLovoTable(list);
                
            }
        });
        LovoButton updateButton=new LovoButton("修改", 250, 400, this);
        updateButton.addActionListener(new ActionListener() {
            
            @Override
            public void actionPerformed(ActionEvent arg0) {
                int row=table.getSelectedRow();
                if(row==-1)
                {
                    JOptionPane.showMessageDialog(null, "请选择行");
                    return ;
                }
                //根据下标找到对象
                StudentBean student=list.get(row);
                MainFrame.this.dispose();
                UpdateFrema x=new UpdateFrema(student);
                
            }
        });
        this.setSize(800, 600);
        this.setVisible(true);
        this.setLocationRelativeTo(null);
        this.setDefaultCloseOperation(3);
    }

    public static void main(String[] args) {
        MainFrame m = new MainFrame();
        
    }

}
\添加窗口
package com.frame.project;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.List;

import javax.swing.JFrame;

import com.lovo.netCRM.component.LovoButton;
import com.lovo.netCRM.component.LovoTxt;

public class addFrame extends JFrame {
    private LovoTxt codeTxt=new LovoTxt("学号", 50, 20, this);
    private LovoTxt nameTxt=new LovoTxt("姓名", 50, 70, this);
    private LovoTxt sexTxt=new LovoTxt("性别", 50, 120, this);
    private LovoTxt    eduTxt=new LovoTxt("学历", 50, 170, this);
    public addFrame() {
        
        this.setLayout(null);
        LovoButton addButton=new LovoButton("添加", 100, 200, this);
        addButton.addActionListener(new ActionListener() {
            
            @Override
            public void actionPerformed(ActionEvent arg0) {
                // 文本款封装学生对象
                StudentBean student=new StudentBean();
                student.setCode(Integer.parseInt(codeTxt.getText()));
                student.setName(nameTxt.getText());
                student.setSex(sexTxt.getText());
                student.setEdu(eduTxt.getText());
                MainFrame.list.add(student);
                FilePress.write(MainFrame.list);
                addFrame.this.dispose();
                new MainFrame();
                
            }
        });
        
        this.setSize(400, 300);
        this.setVisible(true);
        this.setLocationRelativeTo(null);
        this.setDefaultCloseOperation(3);;
    }
}
\修改窗口
package com.frame.project;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JFrame;

import com.lovo.netCRM.component.LovoButton;
import com.lovo.netCRM.component.LovoLabel;
import com.lovo.netCRM.component.LovoTxt;

public class UpdateFrema extends JFrame {
    private LovoLabel codeLable = new LovoLabel("学号", 50, 20, this);
    private LovoLabel nameLable = new LovoLabel("姓名", 50, 60, this);
    private LovoLabel sexLable = new LovoLabel("性别", 50, 100, this);
    private LovoTxt eduTxt = new LovoTxt("学历", 50, 140, this);
    private StudentBean student;

    public UpdateFrema(StudentBean bean) {
        this.setLayout(null);
        this.student = bean;
        LovoButton updateButton = new LovoButton("修改", 100, 200, this);
        init(student);
        updateButton.addActionListener(new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent arg0) {
                
                student.setEdu(eduTxt.getText());
                FilePress.write(MainFrame.list);
                UpdateFrema.this.dispose();
                new MainFrame();

            }
        });
        this.setSize(400, 300);
        this.setVisible(true);
        this.setLocationRelativeTo(null);
        this.setDefaultCloseOperation(3);
    }

    private void init(StudentBean s) {
        codeLable.setText(student.getCode() + "");
        nameLable.setText(student.getName());
        sexLable.setText(student.getSex());

    }
}

package com.frame.project;
//学生类
public class StudentBean {
    /**学号*/
    private int code;
    /**姓名*/
    private String name;
    /**性别*/
    private String sex;
    /**学历*/
    private String edu;

    public StudentBean() {
        super();
        // TODO Auto-generated constructor stub
    }

    public StudentBean(int code, String name, String sex, String edu) {
        super();
        this.code = code;
        this.name = name;
        this.sex = sex;
        this.edu = edu;
    }

    public int getCode() {
        return code;
    }

    public void setCode(int code) {
        this.code = code;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

    public String getEdu() {
        return edu;
    }

    public void setEdu(String edu) {
        this.edu = edu;
    }

    @Override
    public String toString() {
        return "StudentBean [code=" + code + ", name=" + name + ", sex=" + sex + ", edu=" + edu + "]";
    }
    

}

package com.frame.project;
文件读写操作
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Reader;
import java.io.Writer;
import java.util.ArrayList;
import java.util.List;

public class FilePress {

    public static List<StudentBean> read() {
        List<StudentBean> list = new ArrayList<StudentBean>();
        Reader r = null;
        BufferedReader br = null;

        try {
            r = new FileReader("student.txt");
            br = new BufferedReader(r);
            String str;
            while ((str = br.readLine()) != null) {
                String[] stu = str.split("\s+");
                StudentBean s = new StudentBean();
                s.setCode(Integer.parseInt(stu[0]));
                s.setName(stu[1]);
                s.setSex(stu[2]);
                s.setEdu(stu[3]);
                list.add(s);
            }
        } catch (Exception e) {

            e.printStackTrace();
        } finally {
            try {
                br.close();
                r.close();
            } catch (IOException e) {

                e.printStackTrace();
            }
        }
        return list;
    }

    public static void write(List<StudentBean> list) {
        Writer w = null;

        try {
            w = new FileWriter("student.txt");
            for (StudentBean s : list) {
                w.write(s.getCode() + "       " + s.getName() + "       "
            + s.getSex() + "        " + s.getEdu()+"
");

            }

        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            try {
                w.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }

    }

    public static void main(String[] args) {
        // FilePress f = new FilePress();
        // List<StudentBean> list = f.read();
        // System.out.println(list);
    }

}

此工程用到了文件的读取和写入，集合和对象多种java中重要的概念，及算法，熟练地掌握并且了解此工程的每一步对今后的学习有着深刻的意义