跪求JAVA编程高手帮忙搞个小程序

设计一个录入窗口界面，输入几个学生信息（信息中包括的内容自己设置），并把信息存放在abc.abc文件中
我自己根本不会，也没时间弄这个的·····

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相关建议 2010-05-15

题外话：楼主说的abc.abc文件不是真正的abc.abc文件吧，应该是stu.txt或之类的正常后缀的文件吧，呵呵

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我给你写了个InputInfo.java类（包括一个内部类Student），可以实现录入学生基本信息(姓名、性别、年龄和专业等)、判断信息正误（如年龄必须为整数等）和保存信息为文本等功能，代码如下：

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import java.awt.BorderLayout;

import java.awt.Dimension;

import java.awt.FlowLayout;

import java.awt.GridLayout;

import java.awt.Toolkit;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.io.File;

import java.io.FileWriter;

import java.io.IOException;

import java.util.ArrayList;

import javax.swing.BorderFactory;

import javax.swing.JButton;

import javax.swing.JFileChooser;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JTextField;

import javax.swing.UIManager;

/**

* @author Godwin

* @version 2010-05-15

*/

public class InputInfo extends JFrame implements ActionListener {

ArrayList<Student> stus = new ArrayList<Student>();

JLabel infoLabel;

JLabel nameLabel;

JTextField name;

JLabel genderLabel;

JTextField gender;

JLabel ageLabel;

JTextField age;

JLabel majorLabel;

JTextField major;

JButton addButton;

JButton resetButton;

JButton saveasButton;

public InputInfo() {

this.setTitle("录入学生信息");

// 信息提示

infoLabel = new JLabel();

setInfo();

JPanel infoPanel = new JPanel(new FlowLayout());

infoPanel.add(infoLabel);

// 录入框

// 姓名

nameLabel = new JLabel("姓名(*)：");

name = new JTextField(20);

JPanel namePanel = new JPanel(new FlowLayout());

namePanel.add(nameLabel);

namePanel.add(name);

// 性别

genderLabel = new JLabel("性别(*)：");

gender = new JTextField(20);

JPanel genderPanel = new JPanel(new FlowLayout());

genderPanel.add(genderLabel);

genderPanel.add(gender);

// 年龄

ageLabel = new JLabel("年龄(*)：");

age = new JTextField(20);

JPanel agePanel = new JPanel(new FlowLayout());

agePanel.add(ageLabel);

agePanel.add(age);

// 专业

majorLabel = new JLabel("专业(*)：");

major = new JTextField(20);

JPanel majorPanel = new JPanel(new FlowLayout());

majorPanel.add(majorLabel);

majorPanel.add(major);

// 添加录入面板

JPanel inputPanel = new JPanel(new GridLayout(4, 1, 2, 2));

inputPanel.setBorder(BorderFactory.createTitledBorder("学生基本信息"));

inputPanel.add(namePanel);

inputPanel.add(genderPanel);

inputPanel.add(agePanel);

inputPanel.add(majorPanel);

// 按钮

addButton = new JButton("添加");

resetButton = new JButton("重置");

saveasButton = new JButton("另存为");

JPanel buttonPanel = new JPanel(new FlowLayout());

buttonPanel.add(addButton);

buttonPanel.add(resetButton);

buttonPanel.add(saveasButton);

// 添加

this.add(infoPanel, BorderLayout.NORTH);

this.add(inputPanel, BorderLayout.CENTER);

this.add(buttonPanel, BorderLayout.SOUTH);

this.pack();

this.setResizable(false);

Toolkit tool = Toolkit.getDefaultToolkit();

Dimension screen = tool.getScreenSize();

this.setLocation(screen.width / 2 - this.getWidth() / 2, screen.height

/ 2 - this.getHeight() / 2);

this.setVisible(true);

this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

addButton.addActionListener(this);

resetButton.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

name.setText("");

gender.setText("");

age.setText("");

major.setText("");

name.requestFocus();

}

});

saveasButton.addActionListener(new ActionListener() {

public void actionPerformed(ActionEvent e) {

outputText();

}

});

}

// 添加学生信息监听

public void actionPerformed(ActionEvent e) {

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

JOptionPane.showMessageDialog(this, "请输入姓名！", "提示信息",

JOptionPane.WARNING_MESSAGE);

name.requestFocus();

return;

} else if (gender.getText().equals("") || gender.getText() == null) {

JOptionPane.showMessageDialog(this, "请输入性别！", "提示信息",

JOptionPane.WARNING_MESSAGE);

gender.requestFocus();

return;

} else if (age.getText().equals("") || age.getText() == null) {

JOptionPane.showMessageDialog(this, "请输入年龄！", "提示信息",

JOptionPane.WARNING_MESSAGE);

age.requestFocus();

return;

} else if (!(age.getText().matches("[\\d]{1,2}"))) {

JOptionPane.showMessageDialog(this, "输入有误，年龄必须为1-2位整数，请重新输入！",

"错误提示", JOptionPane.WARNING_MESSAGE);

age.requestFocus();

age.selectAll();

return;

} else if (major.getText().equals("") || major.getText() == null) {

JOptionPane.showMessageDialog(this, "请输入专业！", "提示信息",

JOptionPane.WARNING_MESSAGE);

major.requestFocus();

return;

}

stus.add(new Student(name.getText(), gender.getText(), Integer

.valueOf(age.getText()), major.getText()));

setInfo();

JOptionPane.showMessageDialog(this, "成功添加一条学生信息！");

resetButton.doClick();

}

public void setInfo() {

infoLabel.setText("现有学生数为：" + stus.size());

}

// 保存文件

public void outputText() {

JFileChooser chooser = new JFileChooser();

chooser.showSaveDialog(this);

File file = chooser.getSelectedFile();

String fileName = file.getName();

if (fileName != null && fileName.trim().length() > 0) {

if (!(fileName.endsWith(".txt"))) {

fileName = fileName.concat(".txt");

}

file = new File(file.getParent().concat(File.separator)

.concat(fileName));

if (file.exists()) {

int i = JOptionPane.showConfirmDialog(this, "该文件已经存在，确定要覆盖吗？");

if (i != JOptionPane.YES_OPTION) {

return;

}

try {

file.createNewFile();

FileWriter fw = new FileWriter(file);

StringBuffer sb = new StringBuffer();

sb.append("姓名" + "\t" + "性别" + "\t" + "年龄" + "\t" + "专业\n");

for (int i = 0; i < stus.size(); i++) {

sb.append(stus.get(i) + "\n");

}

fw.write(sb.toString().trim());

fw.flush();

fw.close();

JOptionPane.showMessageDialog(this, "保存成功！", "提示信息",

JOptionPane.INFORMATION_MESSAGE);

} catch (IOException e) {

JOptionPane.showMessageDialog(this, e.getMessage(), "错误信息",

JOptionPane.WARNING_MESSAGE);

return;

}

class Student {

String name;

String gender;

Integer age;

String major;

public Student() {

}

public Student(String name, String gender, Integer age, String major) {

this.name = name;

this.gender = gender;

this.age = age;

this.major = major;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getGender() {

return gender;

}

public void setGender(String gender) {

this.gender = gender;

}

public Integer getAge() {

return age;

}

public void setAge(Integer age) {

this.age = age;

}

public String getMajor() {

return major;

}

public void setMajor(String major) {

this.major = major;

}

public String toString() {

return "" + name + "\t" + gender + "\t" + age + "\t" + major;

}

public static void main(String[] args) throws Exception {

UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());

new InputInfo();

}

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运行结果如下：

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其他看法

第1个回答 2010-05-15

import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.FileWriter;
import java.io.IOException;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JTextField;

class Login extends JFrame implements ActionListener{
JLabel accountLabel=new JLabel("账号：");
JLabel nameLabel=new JLabel("姓名：");
JTextField account=new JTextField(10);
JTextField name=new JTextField();
JButton butnSave=new JButton("保存");
JButton butnClear= new JButton("重置");;

public Login(String s) {
super(s);
setLayout(null);
add(accountLabel);
accountLabel.setBounds(45, 20, 100, 25);
add(nameLabel);
nameLabel.setBounds(45, 60, 100, 25);
add(account);
account.setBounds(105, 20, 110, 25);
add(name);
name.setBounds(105, 60, 110, 25);
add(butnSave);
butnSave.setBounds(45, 100, 80, 25);
add(butnClear);
butnClear.setBounds(135, 100, 80, 25);
butnSave.addActionListener(this);
butnClear.addActionListener(this);
setVisible(true);
setSize(300, 200);
setLocation(Toolkit.getDefaultToolkit().getScreenSize().width / 3,
Toolkit.getDefaultToolkit().getScreenSize().width / 6);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
validate();//刷新
}

public static void main(String[] args) {
Login log = new Login("信息录入");
}

public void actionPerformed(ActionEvent e) {
if (e.getSource() ==butnSave){
FileWriter fw=null;
try {
fw = new FileWriter("d:/abc.abc");
fw.write(account.getText()+" "+name.getText());
fw.flush();
JOptionPane.showMessageDialog(this, "保存成功，在d:/abc.abc文件中");
} catch (IOException e1) {
try {
fw.close();
} catch (IOException e2) {
}
e1.printStackTrace();
}

}else if(e.getSource()==butnClear){
account.setText("");
name.setText("");
}
}
}

参考资料：还有其他问题的话，给我发百度消息

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第2个回答 2010-05-15

swing 的简单界面，还是自己动手写写吧
呵呵，不会是家庭作业吧？
百度:swing 登陆窗口，下载个，改改吧

第3个回答 2010-05-15

很简单的吧