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import java.awt.BorderLayout;

public class WordProcessSystem extends JFrame{

32313133353236313431303231363533e58685e5aeb931333264663736private JFileChooser chooser;

private JTextArea textArea;

private File file;

private String string = "";

private Font font;

public WordProcessSystem(){

super();

setTitle("文字处理系统");

setBounds(100, 100,600, 500);

getContentPane().setLayout(new BorderLayout());

getContentPane().setVisible(true);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

JMenuBar menuBar = new JMenuBar();

JMenu menu = new JMenu("文件");

JMenuItem menuItem = new JMenuItem("新建");

menuItem.addActionListener(new ActionListener(){

@Override

public void actionPerformed(ActionEvent e) {

// TODO Auto-generated method stub

String str1 = JOptionPane.showInputDialog("请输入新建文件名：");

try {

file = new File("E:\\", str1 + ".txt");

if(file.exists()){

JOptionPane.showMessageDialog(null, "文件名已存在！");

}

else{

file.createNewFile();

}

} catch (Exception e1) {

// TODO: handle exception

}

}

});

chooser = new JFileChooser();

chooser.setCurrentDirectory(new File("."));

JMenuItem menuItem1 = new JMenuItem("打开");

menuItem1.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent e){

int result = chooser.showOpenDialog(null);

if(result == JFileChooser.APPROVE_OPTION){

String str = chooser.getSelectedFile().toString();

try {

file = new File(str);

readFromFile(file);

textArea.setText(string);

} catch (Exception e1) {

// TODO: handle exception

}

}

}

});

JMenuItem menuItem2 = new JMenuItem("退出");

menuItem2.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent e){

System.exit(0);

}

});

JMenuItem menuItem3 = new JMenuItem("保存");

menuItem3.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent e){

String string = textArea.getText();

try {

writeToFile(file, string);

} catch (Exception e1) {

//TODO: handle exception

}

}

});

menuItem3.addKeyListener(new KeyAdapter(){

public void keyPressed(KeyEvent e){

if(e.getKeyChar() == KeyEvent.VK_C){

//if(e.getKeyChar() == KeyEvent.VK_S){

String string = textArea.getText();

try {

writeToFile(file, string);

} catch (Exception e1) {

//TODO: handle exception

}

//}

}

}

});

JMenuItem menuItem4 = new JMenuItem("另存为");

menuItem4.addActionListener(new ActionListener(){

@Override

public void actionPerformed(ActionEvent e) {

// TODO Auto-generated method stub

String s1 = JOptionPane.showInputDialog("请输入保存文件路径和文件名：");

file = new File(s1);

System.out.println(file.getPath());

try {

writeToFile(file, string);

System.out.println("aaaa");

} catch (Exception e1) {

// TODO: handle exception

}

}

});

menu.add(menuItem);

menu.add(menuItem1);

menu.add(menuItem2);

menu.add(menuItem3);

menu.add(menuItem4);

JMenu menu2 = new JMenu("格式");

final JMenu menu3 = new JMenu("字体");

String []fontString = {"宋体","楷体","隶书"};

final JMenuItem []menu3_1 = new JMenuItem[fontString.length];

for(int i = 0;i < fontString.length;i++){

String changeString = "";

menu3_1[i] = new JMenuItem(fontString[i]);

menu3_1[i].setActionCommand(changeString + i);

menu3_1[i].addActionListener(new ActionListener(){

@Override

public void actionPerformed(ActionEvent e) {

// TODO Auto-generated method

switch (e.getActionCommand().charAt(0)) {

case '0':

font = new Font("宋体",Font.PLAIN,20);

textArea.setFont(font);

break;

case '1':

font = new Font("楷体",Font.PLAIN,18);

textArea.setFont(font);

break;

case '2':

font = new Font("隶书",Font.BOLD,18);

textArea.setFont(font);

break;

default:

break;

}

}});

menu3.add(menu3_1[i]);

}

JMenu menu4 = new JMenu("字号");

String []fontBig = {"10","15","20","25","30","35","40"};

final JMenuItem []menu4_1 = new JMenuItem[fontBig.length];

for(int i = 0;i < fontBig.length;i++){

String changeString = "";

menu4_1[i] = new JMenuItem(fontBig[i]);

menu4_1[i].setActionCommand(changeString + i);

menu4_1[i].addActionListener(new ActionListener(){

@Override

public void actionPerformed(ActionEvent e) {

// TODO Auto-generated method

switch (e.getActionCommand().charAt(0)) {

case '0':

font = new Font(menu3.getText(),Font.PLAIN,10);

textArea.setFont(font);

break;

case '1':

font = new Font(menu3.getText(),Font.PLAIN,15);

textArea.setFont(font);

break;

case '2':

font = new Font(menu3.getText(),Font.PLAIN,20);

textArea.setFont(font);

break;

case '3':

font = new Font(menu3.getText(),Font.PLAIN,25);

textArea.setFont(font);

break;

case '4':

font = new Font(menu3.getText(),Font.PLAIN,30);

textArea.setFont(font);

break;

case '5':

font = new Font(menu3.getText(),Font.PLAIN,35);

textArea.setFont(font);

break;

case '6':

font = new Font(menu3.getText(),Font.PLAIN,40);

textArea.setFont(font);

break;

default:

break;

}

}});

menu4.add(menu4_1[i]);

}

menu2.add(menu3);

menu2.add(menu4);

menuBar.add(menu);

menuBar.add(menu2);

setJMenuBar(menuBar);

textArea = new JTextArea();

textArea.setVisible(true);

//textArea.setFont(new Font("宋体",Font.BOLD,20));

add(textArea);

JScrollPane scrollPane = new JScrollPane(textArea);

scrollPane.setSize(600, 410);

scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);

scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);

add(scrollPane);

}

public void readFromFile(File f) throws IOException{

FileReader fReader = new FileReader(file);

BufferedReader bReader = new BufferedReader(fReader);

char []data = new char[10000];

int length = 0;

while((length = fReader.read(data)) > 0){

string += new String(data,0,length);

}

//string = new String("");

//while(true){

//String s1 = bReader.readLine();

//if(s1 == null){

//break;

//}

//string += (s1 + "\n");

bReader.close();

fReader.close();

}

public void writeToFile(File file,String string) throws IOException{

if(!file.exists()){

file.createNewFile();

}

FileWriter fWriter = new FileWriter(file);

fWriter.write(string);

fWriter.close();

}

public static void main(String[] args) {

WordProcessSystem wordProcessSystem = new WordProcessSystem();

wordProcessSystem.setVisible(true);

}

}

追问

额~很多错误~

追答

这个是在Eclipse中写的，出现很多错误的原因是许多用到的类相应的包没有导进去。

例如：import java.awt.BorderLayout；

你把包导进去就好了

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