标签：j2se windows记事本
基于J2SE实现的一个记事本程序。
运行程序截图：
工程目录结构：
程序代码：
package com.hblg;
import java.awt.BorderLayout;
import java.awt.FileDialog;
import java.awt.Font;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import javax.swing.ImageIcon;
import javax.swing.JCheckBoxMenuItem;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.KeyStroke;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class NotePad extends JFrame implements ActionListener, ItemListener {
static JTextArea ta;
JMenuBar mb;
FileDialog dialog_load, dialog_save;
JMenu mFile, mEdit, mForm, mCheck, mHelp;
JMenuItem open, save, exit, copy, cut, paste, search, about;
JCheckBoxMenuItem lineWrap, state;
FileReader fr;
BufferedReader br;
FileWriter fw;
BufferedWriter bw;
JLabel label = new JLabel("", JLabel.RIGHT);
String copyString;
public static void main(String[] args) {
// TODO Auto-generated method stub
// 设置界面风格
try {
UIManager
.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
// SwingUtilities.updateComponentTreeUI(this);
} 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();
}
new NotePad();
}
public NotePad() {
dialog_load = new FileDialog(this, "打开文件对话框", FileDialog.LOAD);
dialog_save = new FileDialog(this, "保存文件对话框", FileDialog.SAVE);
open = new JMenuItem("打开");
save = new JMenuItem("保存");
exit = new JMenuItem("退出");
copy = new JMenuItem("复制");
cut = new JMenuItem("剪切");
paste = new JMenuItem("粘贴");
search = new JMenuItem("查找");
about = new JMenuItem("关于");
lineWrap = new JCheckBoxMenuItem("自动换行");
state = new JCheckBoxMenuItem("状态栏");
save.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S,
ActionEvent.CTRL_MASK));
copy.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C,
ActionEvent.CTRL_MASK));
cut.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_X,
ActionEvent.CTRL_MASK));
paste.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_V,
ActionEvent.CTRL_MASK));
mFile = new JMenu("文件(F)");
mFile.setMnemonic(KeyEvent.VK_F);
mEdit = new JMenu("编辑(E)");
mForm = new JMenu("格式(O)");
mCheck = new JMenu("查找(V)", true);
mHelp = new JMenu("帮助(H)");
mb = new JMenuBar();
ta = new JTextArea();
ta.setFont(new Font("华康少女文字W5(P)", Font.PLAIN, 12));
label.setFont(new Font("楷体", Font.PLAIN, 12));
JScrollPane sp = new JScrollPane(ta,
JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
mFile.add(open);
mFile.add(save);
mFile.add(exit);
mEdit.add(copy);
mEdit.add(cut);
mEdit.add(paste);
mEdit.add(search);
mCheck.add(state);
mForm.add(lineWrap);
mHelp.add(about);
about.addActionListener(this);
open.addActionListener(this);
save.addActionListener(this);
exit.addActionListener(this);
copy.addActionListener(this);
cut.addActionListener(this);
paste.addActionListener(this);
search.addActionListener(this);
lineWrap.addItemListener(this);
state.addItemListener(this);
mb.add(mFile);
mb.add(mEdit);
mb.add(mForm);
mb.add(mCheck);
mb.add(mHelp);
this.setJMenuBar(mb);
this.add(sp);
// int w = Toolkit.getDefaultToolkit().getScreenSize().width;
// int h = Toolkit.getDefaultToolkit().getScreenSize().height;
this.setTitle("记事本");
this.setIconImage(Toolkit.getDefaultToolkit().getImage(
NotePad.class.getClassLoader().getResource("images/Word.png")));
this.setSize(700, 600);
// this.setLocation((w - 600) / 2, (h - 400) / 2);
dialog_load.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
dialog_load.setVisible(false);
}
});
dialog_save.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
dialog_save.setVisible(false);
}
});
this.setLocationRelativeTo(null);
this.setVisible(true);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// System.out.println(System.getProperty("line.separator"));
new Thread(new Check()).start();
}
public void showState() {
this.add(label, BorderLayout.SOUTH);
this.setVisible(true);
new Thread(new Show()).start();
}
public void checkEditable() {
if (lineWrap.isSelected()) {
state.setSelected(false);
state.setEnabled(false);
} else {
state.setEnabled(true);
}
}
// 用于检查状态栏是否可用的线程
class Check implements Runnable {
@Override
public void run() {
// TODO Auto-generated method stub
while (true) {
try {
Thread.sleep(100);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
checkEditable();
}
}
}
// 用于显示状态栏的线程
class Show implements Runnable {
@Override
public void run() {
// TODO Auto-generated method stub
while (true) {
try {
Thread.sleep(100);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
int rowCount = 0;
String str = ta.getText().substring(0, ta.getCaretPosition());
for (int i = 0; i < str.length(); i++) {
if (str.charAt(i) == '\n') {
rowCount++;
}
}
int columnCount = 0;
int temp = 0;
String strs[] = ta.getText()
.substring(0, ta.getCaretPosition()).split("\n");
if (strs.length > 1) {
for (int i = 0; i < strs.length - 1; i++) {
temp += strs[i].length();
}
if (ta.getCaretPosition() == temp + rowCount) {
columnCount = 0;
}
columnCount = ta.getCaretPosition() - temp - rowCount;
} else {
columnCount = ta.getCaretPosition() + 1;
}
// label.setText(""+ta.getText().length());
label.setText("字数:" + ta.getText().length() + " "
+ "第" + (rowCount + 1) + "行，" + "第" + (columnCount)
+ "列" + " ");
// System.out.println(ta.getCaretPosition());
}
}
}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if (e.getSource() == open) {
dialog_load.setVisible(true);
String s;
if (dialog_load.getFile() != null) {
try {
ta.setText(null);
ta.setFont(new Font("宋体", Font.PLAIN, 16));
File f = new File(dialog_load.getDirectory(),
dialog_load.getFile());
fr = new FileReader(f);
br = new BufferedReader(fr);
while ((s = br.readLine()) != null) {
ta.append(s + '\n');
}
this.setTitle(dialog_load.getFile() + " - 记事本");
// System.out.println(ta.getLineCount());
fr.close();
} catch (IOException e1) {
e1.printStackTrace();
}
}
} else if (e.getActionCommand() == save.getText()) {
dialog_save.setVisible(true);
if (dialog_save.getFile() != null) {
try {
File f = new File(dialog_save.getDirectory(),
dialog_save.getFile());
fw = new FileWriter(f);
bw = new BufferedWriter(fw);
String str = ta.getText();
String lines[] = str.split("\n");
for (String line : lines) {
bw.write(line + "\r\n");
}
bw.close();
fw.close();
} catch (IOException e2) {
e2.printStackTrace();
}
}
} else if (e.getActionCommand() == exit.getText()) {
System.exit(0);
}
if (e.getSource() == copy) {
copyString = ta.getSelectedText();
}
if (e.getSource() == cut) {
copyString = ta.getSelectedText();
ta.replaceRange("", ta.getSelectionStart(), ta.getSelectionEnd());
}
if (e.getSource() == paste) {
ta.insert(copyString, ta.getCaretPosition());
}
if (e.getSource() == search) {
new SearchFrame(this, "查找/替换", false).setVisible(true);
}
if (e.getSource() == about) {
JOptionPane.showMessageDialog(
this,
"一个简单的记事本小程序，具有一些简单的编辑，查找功能",
"^(oo)^",
JOptionPane.INFORMATION_MESSAGE,
new ImageIcon(Toolkit.getDefaultToolkit().getImage(
NotePad.class.getClassLoader().getResource(
"images/0.gif"))));
}
}
@Override
public void itemStateChanged(ItemEvent e) {
// TODO Auto-generated method stub
if (lineWrap.isSelected()) {
ta.setLineWrap(true);
ta.setWrapStyleWord(true);
} else {
ta.setLineWrap(false);
}
if (state.isSelected()) {
showState();
} else {
this.remove(label);
this.setVisible(true);
}
}
}
package com.hblg;
import java.awt.Dialog;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
public class SearchFrame extends Dialog implements WindowListener,ActionListener {
JPanel p1, p2, p3;
JLabel lSearch, lReplace;
JTextField tSearch, tReplace;
JButton b;
public SearchFrame(Frame arg0, String arg1, boolean arg2) {
super(arg0, arg1, arg2);
p1 = new JPanel();
p2 = new JPanel();
p3 = new JPanel();
b = new JButton("确定");
lSearch = new JLabel("查找");
lReplace = new JLabel("替换");
tSearch = new JTextField(12);
tReplace = new JTextField(12);
p1.add(lSearch);
p1.add(tSearch);
p2.add(lReplace);
p2.add(tReplace);
p3.setLayout(new FlowLayout(FlowLayout.CENTER));
p3.add(b);
this.add(p1);
this.add(p2);
this.add(p3);
b.addActionListener(this);
this.addWindowListener(this);
this.setSize(300, 200);
this.setModal(true);
this.setLayout(new GridLayout(3, 1));
this.setLocationRelativeTo(null);
}
@Override
public void actionPerformed(ActionEvent arg0) {
// TODO Auto-generated method stub
String string = NotePad.ta.getText();
String toFind = this.tSearch.getText();
if(!toFind.equals("")) {
int index = string.indexOf(toFind);
int count = 0;
while (index != -1) {
//String str = string.substring(index, index+toFind.length());
NotePad.ta.replaceRange(this.tReplace.getText(), index, index+toFind.length());
index = string.indexOf(toFind, index+toFind.length());
count ++;
}
System.out.println(count);
} else {
JOptionPane.showMessageDialog(this, "`(*∩_∩*)′，什么都没写啊！");
}
}
@Override
public void windowClosing(WindowEvent arg0) {
// TODO Auto-generated method stub
this.setVisible(false);
}
@Override
public void windowActivated(WindowEvent arg0) {
// TODO Auto-generated method stub
}
@Override
public void windowClosed(WindowEvent arg0) {
// TODO Auto-generated method stub
}
@Override
public void windowDeactivated(WindowEvent arg0) {
// TODO Auto-generated method stub
}
@Override
public void windowDeiconified(WindowEvent arg0) {
// TODO Auto-generated method stub
}
@Override
public void windowIconified(WindowEvent arg0) {
// TODO Auto-generated method stub
}
@Override
public void windowOpened(WindowEvent arg0) {
// TODO Auto-generated method stub
}
}
【J2SE】java仿windows记事本,布布扣,bubuko.com
标签：j2se windows记事本
原文地址：http://blog.csdn.net/tracysilocean/article/details/26813211
