求一个简单地Java语言写的科研成果管理系统的源代码

以下方法实现了用户界面登陆importjava.awt.*;importjava.awt.event.*;publicclassDengLuJieMianextendsFrameimplementsActionListener{Labelusername=newLabel("用户名：");//使用文本创建一个用户名标签TextFieldt1=newTextField();//创建一个文本框对象Labelpassword=newLabel("密码：");//创建一个密码标签TextFieldt2=newTextField();Buttonb1=newButton("登陆");//创建登陆按钮Buttonb2=newButton("取消");//创建取消按钮publicDengLuJieMian(){this.setTitle("学生信息管理系统");//设置窗口标题this.setLayout(null);//设置窗口布局管理器username.setBounds(50,40,60,20);//设置姓名标签的初始位置this.add(username);//将姓名标签组件添加到容器t1.setBounds(120,40,80,20);//设置文本框的初始位置this.add(t1);//将文本框组件添加到容器password.setBounds(50,100,60,20);//密码标签的初始位置this.add(password);//将密码标签组件添加到容器t2.setBounds(120,100,80,20);//设置密码标签的初始位置this.add(t2);//将密码标签组件添加到容器b1.setBounds(50,150,60,20);//设置登陆按钮的初始位置this.add(b1);//将登陆按钮组件添加到容器b2.setBounds(120,150,60,20);//设置取消按钮的初始位置this.add(b2);//将取消按钮组件添加到容器b1.addActionListener(this);//给登陆按钮添加监听器b2.addActionListener(this);//给取消按钮添加监听器this.setVisible(true);//设置窗口的可见性this.setSize(300,200);//设置窗口的大小addWindowListener(newWindowAdapter(){publicvoidwindowClosing(WindowEvente){System.exit(0);}});//通过内部类重写关闭窗体的方法}publicvoidactionPerformed(ActionEvente){if(e.getSource()==b1)//处理登陆事件{Stringname=t1.getText();Stringpass=t2.getText();if(name!=nullpass.equals("000123"))//判断语句{newStudentJieMian();}}}publicstaticvoidmain(Stringargs[])//主函数{newDengLuJieMian();}}以下方法实现了学生界面设计importjava.awt.*;importjava.awt.event.*;classStudentJieMianextendsFrameimplementsActionListener{MenuBarm=newMenuBar();//创建菜单栏Menum1=newMenu("信息");//创建菜单“信息”MenuItemm11=newMenuItem("插入");//创建“插入”的菜单项MenuItemm12=newMenuItem("查询");Menum2=newMenu("成绩");//创建菜单“成绩”MenuItemm21=newMenuItem("查询");publicStudentJieMian(){this.setTitle("学生界面");//设置窗口标题this.setLayout(newCardLayout());//设置窗口布局管理器this.setMenuBar(m);//将菜单栏组件添加到容器m.add(m1);//将信息菜单放入菜单栏m.add(m2);m1.add(m11);//将“插入”菜单项添加到“信息”菜单m1.add(m12);//将“查询”菜单项添加到“信息”菜单m2.add(m21);//将“查询”菜单项添加到“成绩”菜单m11.addActionListener(this);//给“插入”菜单项添加监听器m12.addActionListener(this);//给“查询”菜单项添加监听器m21.addActionListener(this);//给“查询”菜单项添加监听器this.setVisible(true);//设置窗口的可见性this.setSize(300,200);//设置窗口的大小addWindowListener(newWindowAdapter(){publicvoidwindowClosing(WindowEvente){System.exit(0);//关闭窗口}});}publicvoidactionPerformed(ActionEvente){if(e.getSource()==m11)//处理“添加信息”事件{newAddStudent();}if(e.getSource()==m12)//处理“查询信息”事件{newSelectStudent();}if(e.getSource()==m21)//处理“查询成绩”事件{newChengJiStudent();}}publicstaticvoidmain(Stringargs[]){newStudentJieMian();//创建一个对象}

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图书管理系统怎么用java代码实现？具体步骤？

1

业务需求，风险分析

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2

分析数据库关系

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3

搭项目框架

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4

书写代码

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5

测试项目

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提交项目

求图书管理系统（java）代码？

java　swing　登陆界面code

/*

* Login.java

*

* Created on __DATE__, __TIME__

*/

package com.agen.library.window;

import java.awt.Image;

import java.awt.Toolkit;

import javax.swing.JOptionPane;

import javax.swing.UIManager;

import javax.swing.UnsupportedLookAndFeelException;

import com.agen.library.factory.DAOFactory;

import com.agen.library.util.GlobalUser;

import com.agen.library.vo.User;

/**

*

* @author __USER__

*/

public class Login extends javax.swing.JFrame {

/**

*

*/

private static final long serialVersionUID = -2176093732040600809L;

/** Creates new form Login */

public Login() {

super("易云图书管理软件V1.0");

Image ime = Toolkit.getDefaultToolkit().getImage(

getClass().getResource("/images/ico.png"));

try {

UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());

} catch (ClassNotFoundException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (InstantiationException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (IllegalAccessException e) {

// TODO Auto-generated catch block

e.printStackTrace();

} catch (UnsupportedLookAndFeelException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

setIconImage(ime);

initComponents();

setLocationRelativeTo(null);

this.setResizable(false);

}

/**

* This method is called from within the constructor to initialize the form.

* WARNING: Do NOT modify this code. The content of this method is always

* regenerated by the Form Editor.

*/

// GEN-BEGIN:initComponents

// editor-fold defaultstate="collapsed" desc="Generated Code"

private void initComponents() {

jLabel2 = new javax.swing.JLabel();

jLabel3 = new javax.swing.JLabel();

jTextField1 = new javax.swing.JTextField();

jPasswordField1 = new javax.swing.JPasswordField();

jButton1 = new javax.swing.JButton();

jButton2 = new javax.swing.JButton();

jLabel1 = new javax.swing.JLabel();

jMenuBar1 = new javax.swing.JMenuBar();

jMenu1 = new javax.swing.JMenu();

jMenuItem1 = new javax.swing.JMenuItem();

jMenu2 = new javax.swing.JMenu();

jMenuItem2 = new javax.swing.JMenuItem();

setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

addKeyListener(new java.awt.event.KeyAdapter() {

public void keyPressed(java.awt.event.KeyEvent evt) {

formKeyPressed(evt);

}

public void keyTyped(java.awt.event.KeyEvent evt) {

formKeyTyped(evt);

}

});

jLabel2.setFont(new java.awt.Font("微软雅黑", 0, 14));

jLabel2.setText("\u7528\u6237\u540d\uff1a");

jLabel3.setFont(new java.awt.Font("微软雅黑", 0, 14));

jLabel3.setText("\u5bc6 \u7801\uff1a");

jTextField1.setFont(new java.awt.Font("微软雅黑", 0, 14));

jTextField1.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent evt) {

jTextField1ActionPerformed(evt);

}

});

jPasswordField1.setFont(new java.awt.Font("微软雅黑", 0, 12));

jPasswordField1.addKeyListener(new java.awt.event.KeyAdapter() {

public void keyTyped(java.awt.event.KeyEvent evt) {

jPasswordField1KeyTyped(evt);

}

});

jButton1.setBackground(new java.awt.Color(223, 216, 216));

jButton1.setFont(new java.awt.Font("微软雅黑", 0, 14));

jButton1.setText("\u767b\u9646");

jButton1.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent evt) {

jButton1ActionPerformed(evt);

}

});

jButton2.setBackground(new java.awt.Color(223, 216, 216));

jButton2.setFont(new java.awt.Font("微软雅黑", 0, 14));

jButton2.setText("\u53d6\u6d88");

jButton2.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent evt) {

jButton2ActionPerformed(evt);

}

});

jLabel1.setIcon(new javax.swing.ImageIcon(

getClass().getResource("/images/login_main.jpg"))); // NOI18N

jMenu1.setText("File");

jMenu1.setFont(new java.awt.Font("微软雅黑", 0, 14));

jMenuItem1.setAccelerator(javax.swing.KeyStroke.getKeyStroke(

java.awt.event.KeyEvent.VK_Q,

java.awt.event.InputEvent.CTRL_MASK));

jMenuItem1.setText("Exit");

jMenuItem1.addMouseListener(new java.awt.event.MouseAdapter() {

public void mouseClicked(java.awt.event.MouseEvent evt) {

jMenuItem1MouseClicked(evt);

}

});

jMenuItem1.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent evt) {

jMenuItem1ActionPerformed(evt);

}

});

jMenu1.add(jMenuItem1);

jMenuBar1.add(jMenu1);

jMenu2.setText("Help");

jMenu2.setFont(new java.awt.Font("微软雅黑", 0, 14));

jMenuItem2.setText("About");

jMenuItem2.addActionListener(new java.awt.event.ActionListener() {

public void actionPerformed(java.awt.event.ActionEvent evt) {

jMenuItem2ActionPerformed(evt);

}

});

jMenu2.add(jMenuItem2);

jMenuBar1.add(jMenu2);

setJMenuBar(jMenuBar1);

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(

getContentPane());

getContentPane().setLayout(layout);

layout.setHorizontalGroup(layout

.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

.addComponent(jLabel1)

.addGroup(

layout.createSequentialGroup()

.addContainerGap()

.addGroup(

layout.createParallelGroup(

javax.swing.GroupLayout.Alignment.TRAILING,

false)

.addComponent(

jLabel2,

javax.swing.GroupLayout.Alignment.LEADING)

.addGroup(

javax.swing.GroupLayout.Alignment.LEADING,

layout.createSequentialGroup()

.addComponent(

jLabel3)

.addPreferredGap(

javax.swing.LayoutStyle.ComponentPlacement.RELATED)

.addGroup(

layout.createParallelGroup(

javax.swing.GroupLayout.Alignment.LEADING)

.addGroup(

layout.createSequentialGroup()

.addGap(10,

10,

10)

.addComponent(

jButton1)

.addGap(47,

47,

47)

.addComponent(

jButton2))

.addComponent(

jPasswordField1)

.addComponent(

jTextField1,

javax.swing.GroupLayout.DEFAULT_SIZE,

197,

Short.MAX_VALUE))

.addContainerGap()))));

layout.setVerticalGroup(layout

.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)

.addGroup(

layout.createSequentialGroup()

.addComponent(jLabel1)

.addPreferredGap(

javax.swing.LayoutStyle.ComponentPlacement.RELATED)

.addGroup(

layout.createParallelGroup(

javax.swing.GroupLayout.Alignment.BASELINE)

.addComponent(jLabel2)

.addComponent(

jTextField1,

javax.swing.GroupLayout.PREFERRED_SIZE,

24,

javax.swing.GroupLayout.PREFERRED_SIZE))

.addPreferredGap(

javax.swing.LayoutStyle.ComponentPlacement.RELATED)

.addGroup(

layout.createParallelGroup(

javax.swing.GroupLayout.Alignment.BASELINE)

.addComponent(jLabel3)

.addComponent(

jPasswordField1,

javax.swing.GroupLayout.PREFERRED_SIZE,

23,

javax.swing.GroupLayout.PREFERRED_SIZE))

.addPreferredGap(

javax.swing.LayoutStyle.ComponentPlacement.RELATED)

.addGroup(

layout.createParallelGroup(

javax.swing.GroupLayout.Alignment.BASELINE)

.addComponent(jButton1)

.addComponent(jButton2))

.addContainerGap(

javax.swing.GroupLayout.DEFAULT_SIZE,

Short.MAX_VALUE)));

pack();

}// /editor-fold

// GEN-END:initComponents

private void jMenuItem2ActionPerformed(java.awt.event.ActionEvent evt) {

// TODO add your handling code here:

About.start();

}

private void jPasswordField1KeyTyped(java.awt.event.KeyEvent evt) {

if (evt.getKeyChar() == '\n') {

String name = jTextField1.getText(); // 获取用户名

String pass = String.valueOf(jPasswordField1.getPassword());// 获取密码

User user = null;

// 未输入用户名

if (name.equals("") || name == null) {

JOptionPane.showMessageDialog(this, "用户名不允许为空！", "cuowu", 0);

return;

}

try {

user = DAOFactory.getIUserDAOInstance().findById(name);

if (user != null) {

if (user.getPass() != null user.getPass().equals(pass)) {

GlobalUser.LOGIN_USER = user; // 记录当前用户

// 进入主界面

Main.start();

this.dispose();

} else {

JOptionPane.showMessageDialog(this, "用户名或密码错误!");

return;

}

}

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

if (user == null) {

JOptionPane.showMessageDialog(this, "用户名或密码错误!", "消息", 0);

return;

}

}

}

private void formKeyTyped(java.awt.event.KeyEvent evt) {

}

private void formKeyPressed(java.awt.event.KeyEvent evt) {

}

private void jTextField1ActionPerformed(java.awt.event.ActionEvent evt) {

// TODO add your handling code here:

}

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {

// TODO add your handling code here:

jTextField1.setText("");

jPasswordField1.setText("");

jTextField1.requestFocus();

}

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {

String name = jTextField1.getText(); // 获取用户名

String pass = String.valueOf(jPasswordField1.getPassword());// 获取密码

User user = null;

// 未输入用户名

if (name.equals("")) {

JOptionPane.showMessageDialog(this, "用户名不允许为空！");

return;

}

try {

user = DAOFactory.getIUserDAOInstance().findById(name);

if (user != null) {

if (user.getPass() != null user.getPass().equals(pass)) {

GlobalUser.LOGIN_USER = user; // 记录当前用户

// 进入主界面

Main.start();

this.dispose();

} else {

JOptionPane.showMessageDialog(this, "用户名或密码错误!", "消息", 0);

return;

}

}

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

if (user == null) {

JOptionPane.showMessageDialog(this, "用户名或密码错误!", "消息", 0);

return;

}

}

private void jMenuItem1ActionPerformed(java.awt.event.ActionEvent evt) {

if (JOptionPane.showConfirmDialog(this, "你确定要退出吗？", "提示",

JOptionPane.YES_NO_OPTION) == JOptionPane.YES_OPTION) {

System.exit(0);

}

}

private void jMenuItem1MouseClicked(java.awt.event.MouseEvent evt) {

System.exit(1);

}

/**

* @param args

* the command line arguments

*/

public static void main(String args[]) {

// System.out.println(Login.class.getResource("src/images/images/login_main.jpg"));

// new javax.swing.ImageIcon(

// Login.class.getResource("../../../../images/login_main.jpg"));

// new Login().setVisible(true);

java.awt.EventQueue.invokeLater(new Runnable() {

public void run() {

new Login().setVisible(true);

}

});

}

// GEN-BEGIN:variables

// Variables declaration - do not modify

private javax.swing.JButton jButton1;

private javax.swing.JButton jButton2;

private javax.swing.JLabel jLabel1;

private javax.swing.JLabel jLabel2;

private javax.swing.JLabel jLabel3;

private javax.swing.JMenu jMenu1;

private javax.swing.JMenu jMenu2;

private javax.swing.JMenuBar jMenuBar1;

private javax.swing.JMenuItem jMenuItem1;

private javax.swing.JMenuItem jMenuItem2;

private javax.swing.JPasswordField jPasswordField1;

private javax.swing.JTextField jTextField1;

// End of variables declaration//GEN-END:variables

}