java文件编辑器的代码 java文件编辑器的代码有哪些

如何用java编写一个简单的文本编辑器？

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import java.io.*;

public class f1 extends Frame implements ActionListener

{

private MenuBar menubar=new MenuBar();

private Menu filemenu=new Menu("文件");

private Menu editmenu=new Menu("编辑");

private Menu formmenu=new Menu("格式");

private MenuItem[] itemf=new MenuItem[4];

private MenuItem[] iteme=new MenuItem[6];

private MenuItem[] items=new MenuItem[2];

private TextArea tf=new TextArea();

public int a=0,b=0,c=0,style=Font.PLAIN,size=15;

public String s1="red:"+a+" "+"green:"+b+" "+"blue"+c,

s2="宋体";

public String[] sz1={"10","16","24","30","32","36"},

sz2={"宋体","黑体","幼圆","隶书","行楷","Arial","Georgia"},

sz3={"粗体","倾斜","常规","粗斜"};

JDialog dialog=new JDialog(this,"字体",true);

Container cp=dialog.getContentPane();

JLabel[] lb=new JLabel[8];

JLabel lb1=new JLabel(s1,JLabel.LEFT);

JButton b1=new JButton("确定"),

b2=new JButton("取消");

JComboBox jc1=new JComboBox(),

jc2=new JComboBox(),

jc3=new JComboBox();

JScrollBar jb1=new JScrollBar(JScrollBar.HORIZONTAL,10,5,0,260);

JScrollBar jb2=new JScrollBar(JScrollBar.HORIZONTAL,10,5,0,260);

JScrollBar jb3=new JScrollBar(JScrollBar.HORIZONTAL,10,5,0,260);

相关问答

Q1: 请教大神们一个java文本编辑器中的代码问题

jmb.add(file);//添加“文件”菜单项

jmb.add(edit);//添加“编辑”菜单项

jmb.add(help);//添加“帮助”菜单项

setSize(600,400);//设置窗口默认大小为600x400

setLocation(300,200);//设置窗口默认屏幕位置(记事本左上角起点位置)在坐标点(300,200)处

setVisible(true);//设置主窗体容器可见

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//设置关闭按钮默认事件为关闭记事本窗口

Q2: java语言写一个文本编辑器的源代码

import java.awt.*;

import javax.swing.*;

import java.awt.event.*;

import javax.swing.event.*;

import java.util.*; //Date needed

import java.io.PrintWriter;

public class NotePad extends JFrame

{

JTextArea jta;

class newl implements ActionListener

{

public void actionPerformed(ActionEvent e)

{

jta.setText("");

}

}

class openl implements ActionListener

{ public void actionPerformed(ActionEvent e)

{

JFileChooser jf=new JFileChooser();

jf.showOpenDialog(NotePad.this);

}

}

//保存文件的监听

class savel implements ActionListener

{

public void actionPerformed(ActionEvent e)

{

JFileChooser jf = new JFileChooser();

jf.showSaveDialog(NotePad.this);

}

}

//打印的监听 ?

class printl implements ActionListener

{

public void actionPerformed(ActionEvent e)

{

// PrintWriter p = new PrintWriter(NotePad.this);

}

}

//退出记事本的监听

class exitl implements ActionListener

{

public void actionPerformed(ActionEvent e)

{

System.exit(0);//退出

}

}

//拷贝的监听

class copyl implements ActionListener

{

public void actionPerformed(ActionEvent e)

{

jta.copy();

}

}

//粘贴的监听

class pastel implements ActionListener

{

public void actionPerformed(ActionEvent e)

{

jta.paste();

}

}

//剪切的监听

class cutl implements ActionListener

{

public void actionPerformed(ActionEvent e)

{

jta.cut();

}

}

//查找的监听

//添加日期的监听

class datel implements ActionListener

{

public void actionPerformed(ActionEvent e)

{

Date d=new Date();

jta.append(d.toString());

}

}

//构造函数

public NotePad()

{

jta=new JTextArea("",24,40);

JScrollPane jsp=new JScrollPane(jta);

JMenuBar jmb=new JMenuBar();

JMenu mFile=new JMenu("File");

JMenu mEdit=new JMenu("Edit");

JMenuItem mNew=new JMenuItem("New",KeyEvent.VK_N);

mNew.addActionListener(new newl());

mFile.add(mNew);

JMenuItem mOpen=new JMenuItem("Open",KeyEvent.VK_O);

mOpen.addActionListener(new openl());

mFile.add(mOpen);

JMenuItem mSave=new JMenuItem("Save");

mSave.addActionListener(new savel());

mFile.add(mSave);

mFile.addSeparator(); //添加分割线

JMenuItem mPrint = new JMenuItem("Print");

mPrint.addActionListener(new printl());

mFile.add(mPrint);

mFile.addSeparator(); //添加分割线

JMenuItem mExit=new JMenuItem("Exit");

mExit.addActionListener(new exitl());

mFile.add(mExit);

mFile.setMnemonic(KeyEvent.VK_F);

//编辑菜单的子菜单的处理

JMenuItem jmi;

jmi=new JMenuItem("Copy");

jmi.addActionListener(new copyl());

mEdit.add(jmi);

jmi=new JMenuItem("Cut");

jmi.addActionListener(new cutl());

mEdit.add(jmi);

jmi=new JMenuItem("Paste");

jmi.addActionListener(new pastel());

mEdit.add(jmi);

mEdit.addSeparator(); //添加分割线

jmi=new JMenuItem("Find");

mEdit.add(jmi);

jmi=new JMenuItem("FindNext");

mEdit.add(jmi);

mEdit.addSeparator();

jmi=new JMenuItem("Select All");

mEdit.add(jmi);

jmi=new JMenuItem("Date/Time");

jmi.addActionListener(new datel());

mEdit.add(jmi);

jmb.add(mFile);

jmb.add(mEdit);

this.setJMenuBar(jmb);

this.getContentPane().add(jsp);

this.setSize(200,200);

this.setVisible(true);

}

//主函数，程序入口点

public static void main(String s[])

{

new NotePad();

}

}

Q3: JAVA编写好的文本编辑器代码怎么运行啊

import java.awt.BorderLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import javax.swing.JFrame;

import javax.swing.JMenu;

import javax.swing.JMenuBar;

import javax.swing.JMenuItem;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

import javax.swing.SwingUtilities;

public class MenuTester extends JFrame implements ActionListener

{

private static final long serialVersionUID = 1L;

private static final String FILE = "d:/1.txt";

JTextArea textArea;

JScrollPane scrollPane;

public MenuTester ()

{

setTitle ("MenuTester");

setLayout (new BorderLayout ());

JMenuBar menuBar = new JMenuBar ();

JMenu[] menu = new JMenu[] { new JMenu ("文件"), new JMenu ("编辑") };

JMenuItem[] menuItem1 = new JMenuItem[] { new JMenuItem ("新建"), new JMenuItem ("打开"), new JMenuItem ("保存"), new JMenuItem ("关闭") };

JMenuItem[] menuItem2 = new JMenuItem[] { new JMenuItem ("复制"), new JMenuItem ("粘贴"), new JMenuItem ("剪切") };

for ( int i = 0; i  menu.length; i++ )

{

menuBar.add (menu[i]);

}

for ( int i = 0; i  menuItem1.length; i++ )

{

menu[0].add (menuItem1[i]);

}

for ( int i = 0; i  menuItem2.length; i++ )

{

menu[1].add (menuItem2[i]);

}

menuItem1[0].addActionListener (this);

menuItem1[1].addActionListener (this);

menuItem1[2].addActionListener (this);

menuItem1[3].addActionListener (this);

setJMenuBar (menuBar);

textArea = new JTextArea ();

scrollPane = new JScrollPane (textArea);

scrollPane.setVisible (false);

add (scrollPane, BorderLayout.CENTER);

setResizable (false);

setSize (800, 600);

setLocationRelativeTo (null);

setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);

setVisible (true);

}

public static void main ( String[] args )

{

SwingUtilities.invokeLater (new Runnable ()

{

@Override

public void run ()

{

new MenuTester ();

}

});

}

@Override

public void actionPerformed ( ActionEvent e )

{

String command = e.getActionCommand ();

if ("新建".equals (command))

{

scrollPane.setVisible (true);

validate ();

}

else if ("关闭".equals (command))

{

scrollPane.setVisible (false);

textArea.setText ("");

validate ();

}

else if ("打开".equals (command))

{

scrollPane.setVisible (true);

validate ();

try

{

FileReader fr = new FileReader (FILE);

char[] cs = new char[1];

while (-1 != ( fr.read (cs) ))

{

textArea.append (new String (cs));

}

fr.close ();

}

catch (Exception e1)

{

e1.printStackTrace ();

}

}

else if ("保存".equals (command))

{

try

{

FileWriter fw = new FileWriter (FILE);

fw.write (textArea.getText ());

fw.flush ();

fw.close ();

}

catch (IOException e1)

{

e1.printStackTrace();

}

}

}

}

Q4: 求一个用Java编写的文本编辑器代码

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import java.io.*;

public class MyTextEditor extends JFrame implements ActionListener,ItemListener,MouseListener

{

private File file;

private JTextArea textarea;

private JRadioButtonMenuItem rbmi_red,rbmi_blue,rbmi_green;

private JMenuItem menuitem_copy,menuitem_cut,menuitem_paste,menuitem_seek;

private JMenuItem menuitem_song,menuitem_fang,menuitem_kai;//字体变量

private JMenuItem menuitem_normal,menuitem_bold,menuitem_italic;//字形变量

private JMenuItem menuitem_20,menuitem_30,menuitem_40;//字号变量

private JMenuItem menuitem_exit,menuitem_infor;

private JPopupMenu popupmenu;

private JMenuItem menuitem_red,menuitem_green,menuitem_blue;

private JDialog dialog,dialog1;

private JButton button_seek;

private JTextField textfield_seek;

private JLabel label_seek,label_infor;

String seek;

public MyTextEditor()

{

super("文本编辑器");

this.setSize(400,300);

this.setLocation(360,300);

this.setDefaultCloseOperation(HIDE_ON_CLOSE);

Container ss=this.getContentPane();

this.textarea = new JTextArea();

JScrollPane dd=new JScrollPane(textarea);

ss.add(dd);

textarea.addMouseListener(this);

this.addMenu();

this.setVisible(true);

this.Dialog();

this.Dialog1();

this.file = null;

}

public MyTextEditor(String filename)

{

this();

if (filename!=null)

{

this.file = new File(filename);

this.setTitle(filename);

this.textarea.setText(this.readFromFile());

}

}

public MyTextEditor(File file)

{

this();

if (file!=null)

{

this.file = file;

this.setTitle(this.file.getName());

this.textarea.setText(this.readFromFile());

}

}

public void Dialog() //建立对话框java文件编辑器的代码的方法

{

dialog=new JDialog(this,"查找",true);

dialog.setLayout(new FlowLayout());

dialog.setSize(200,90);

label_seek=new JLabel("查找内容");

dialog.add(label_seek);

textfield_seek=new JTextField(10);

dialog.add(textfield_seek);

button_seek=new JButton("查找");

dialog.add(button_seek);

button_seek.addActionListener(this);

}

public void Dialog1()

{

dialog1=new JDialog(this,"专利",true);

dialog1.setLayout(new FlowLayout());

dialog1.setSize(200,100);

label_infor=new JLabel("刘同虎制作");

dialog1.add(label_infor);

}

public void addMenu()

{

JMenuBar menubar = new JMenuBar();

this.setJMenuBar(menubar);

JMenu menu_file = new JMenu("文件"); //文件菜单

menubar.add(menu_file);

JMenuItem menuitem_open = new JMenuItem("打开");

menu_file.add(menuitem_open);

menuitem_open.addActionListener(this);

JMenuItem menuitem_save = new JMenuItem("保存");

menu_file.add(menuitem_save);

menuitem_save.addActionListener(this);

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

menu_file.add(menuitem_saveas);

menuitem_saveas.addActionListener(this);

menuitem_exit=new JMenuItem("退出" );

menu_file.add(menuitem_exit);

menuitem_exit.addActionListener(this);

menuitem_infor=new JMenuItem("信息");

menu_file.add(menuitem_infor);

menuitem_infor.addActionListener(this);

JMenu menu_editor=new JMenu("编辑");//编辑菜单

menubar.add(menu_editor);

menuitem_seek=new JMenuItem("查找");

menu_editor.add(menuitem_seek);

menuitem_seek.addActionListener(this);

menuitem_copy=new JMenuItem("复制");

menuitem_copy.addActionListener(this);

menu_editor.add(menuitem_copy);

menuitem_cut=new JMenuItem("剪切");

menu_editor.add(menuitem_cut);

menuitem_cut.addActionListener(this);

menuitem_paste=new JMenuItem("粘贴");

menu_editor.add(menuitem_paste);

menuitem_paste.addActionListener(this);

JMenuItem menu_color=new JMenu("颜色");//颜色菜单

menu_editor.add(menu_color);

ButtonGroup buttongroup=new ButtonGroup();

rbmi_red=new JRadioButtonMenuItem("红",true);

buttongroup.add(rbmi_red);

menu_color.add(rbmi_red);

rbmi_red.addItemListener(this);

rbmi_blue=new JRadioButtonMenuItem("蓝",true);

buttongroup.add(rbmi_blue);

menu_color.add(rbmi_blue);

rbmi_blue.addItemListener(this);

rbmi_green=new JRadioButtonMenuItem("绿",true);

buttongroup.add(rbmi_green);

menu_color.add(rbmi_green);

rbmi_green.addItemListener(this);

JMenu menu_font=new JMenu("设置字体");//设置字体菜单

menubar.add(menu_font);

menuitem_song=new JMenuItem("宋体");

menu_font.add(menuitem_song);

menuitem_song.addActionListener(this);

menuitem_fang=new JMenuItem("仿宋");

menu_font.add(menuitem_fang);

menuitem_fang.addActionListener(this);

menuitem_kai=new JMenuItem("楷体");

menu_font.add(menuitem_kai);

menuitem_kai.addActionListener(this);

JMenu menu_style=new JMenu("设置字形");//设置字形菜单

menubar.add(menu_style);

menuitem_bold=new JMenuItem("粗体");

menu_style.add(menuitem_bold);

menuitem_bold.addActionListener(this);

menuitem_italic=new JMenuItem("斜体");

menu_style.add(menuitem_italic);

menuitem_italic.addActionListener(this);

JMenu menu_size=new JMenu("设置字号"); //设置字号菜单

menubar.add(menu_size);

menuitem_20=new JMenuItem("20");

menu_size.add(menuitem_20);

menuitem_20.addActionListener(this);

menuitem_30=new JMenuItem("30");

menu_size.add(menuitem_30);

menuitem_30.addActionListener(this);

menuitem_40=new JMenuItem("40");

menu_size.add(menuitem_40);

menuitem_40.addActionListener(this);

popupmenu=new JPopupMenu(); //快捷菜单

JMenuItem menuitem_red=new JMenuItem("红色");

popupmenu.add(menuitem_red);

menuitem_red.addActionListener(this);

JMenuItem menuitem_green=new JMenuItem("绿色");

popupmenu.add(menuitem_green);

menuitem_green.addActionListener(this);

menuitem_blue=new JMenuItem("蓝色");

popupmenu.add(menuitem_blue);

menuitem_blue.addActionListener(this);

textarea.add(popupmenu); //向文本区内添加快捷菜单

}

public void writeToFile(String lines) //写文件

{

try

{

FileWriter fout = new FileWriter(this.file);

fout.write(lines+"\r\n");

fout.close();

}

catch (IOException ioex)

{

return;

}

}

public String readFromFile() //读文件

{

try

{

FileReader fin = new FileReader(this.file);

BufferedReader bin = new BufferedReader(fin);

String aline="", lines="";

do

{

aline = bin.readLine();

if (aline!=null)

lines += aline + "\r\n";

} while (aline!=null);

bin.close();

fin.close();

return lines;

}

catch (IOException ioex)

{

return null;

}

}

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