Java仿Windows记事本源代码分享
本文实例为大家分享了java仿windows记事本的具体代码，供大家参考，具体内容如下先上截图：
源代码：
import java.awt.*;
import javax.swing.*;
import javax.swing.filechooser.filenameextensionfilter;
import javax.swing.undo.undomanager;
import java.awt.event.*;
import java.io.*;
/**
*
* @author cjbi@outlook.com
* @created 2015年7月6日 上午11:22:24
*/
public class jnotepad extends jframe implements actionlistener {
jmenubar menubar = new jmenubar();
jmenu file = new jmenu("文件(f)");
jmenu edit = new jmenu("编辑(e)");
jmenu format = new jmenu("格式(o)");
jmenu help = new jmenu("帮助(h)");
jmenuitem create = new jmenuitem("新建");
jmenuitem open = new jmenuitem("打开...");
jmenuitem save = new jmenuitem("保存");
jmenuitem saveas = new jmenuitem("另存为...");
jmenuitem exit = new jmenuitem("退出");
jmenuitem undo = new jmenuitem("撤销");
jmenuitem cut = new jmenuitem("剪切");
jmenuitem copy = new jmenuitem("复制");
jmenuitem paste = new jmenuitem("粘贴");
jmenuitem findrep = new jmenuitem("查找替换");
jmenuitem selectall = new jmenuitem("全选");
jmenuitem font = new jmenuitem("字体");
jmenuitem about = new jmenuitem("关于");
jmenuitem cut2 = new jmenuitem("剪切(x)");
jmenuitem copy2 = new jmenuitem("复制(c)");
jmenuitem paste2 = new jmenuitem("粘贴(v)");
jmenuitem selectall2 = new jmenuitem("全选(a)");
public static jtextarea textarea = new jtextarea();
undomanager um = new undomanager();
jscrollpane scroll = new jscrollpane(textarea, scrollpaneconstants.vertical_scrollbar_always, scrollpaneconstants.horizontal_scrollbar_as_needed);
jpopupmenu popup = new jpopupmenu();
string pathselect;
// 获取屏幕尺寸
dimension screensize = toolkit.getdefaulttoolkit().getscreensize();
public jnotepad() {
// 此处定义键盘快捷键
// menubar
file.setmnemonic(keyevent.vk_f);
edit.setmnemonic(keyevent.vk_e);
format.setmnemonic(keyevent.vk_o);
help.setmnemonic(keyevent.vk_h);
// menuitem
create.setaccelerator(keystroke.getkeystroke(keyevent.vk_n, actionevent.ctrl_mask));
open.setaccelerator(keystroke.getkeystroke(keyevent.vk_o, actionevent.ctrl_mask));
save.setaccelerator(keystroke.getkeystroke(keyevent.vk_s, actionevent.ctrl_mask));
undo.setaccelerator(keystroke.getkeystroke(keyevent.vk_z, actionevent.ctrl_mask));
cut.setaccelerator(keystroke.getkeystroke(keyevent.vk_x, actionevent.ctrl_mask));
copy.setaccelerator(keystroke.getkeystroke(keyevent.vk_c, actionevent.ctrl_mask));
paste.setaccelerator(keystroke.getkeystroke(keyevent.vk_v, actionevent.ctrl_mask));
findrep.setaccelerator(keystroke.getkeystroke(keyevent.vk_f, actionevent.ctrl_mask));
selectall.setaccelerator(keystroke.getkeystroke(keyevent.vk_a, actionevent.ctrl_mask));
// 事件监听者
save.addactionlistener(this);
create.addactionlistener(this);
open.addactionlistener(this);
saveas.addactionlistener(this);
exit.addactionlistener(this);
undo.addactionlistener(this);
cut.addactionlistener(this);
copy.addactionlistener(this);
paste.addactionlistener(this);
selectall.addactionlistener(this);
font.addactionlistener(this);
about.addactionlistener(this);
cut2.addactionlistener(this);
copy2.addactionlistener(this);
paste2.addactionlistener(this);
selectall2.addactionlistener(this);
findrep.addactionlistener(this);
// 设置撤销文本的管理器
textarea.getdocument().addundoableeditlistener(um);
textarea.setfont(format.font);
// 文件
file.add(create);
file.add(open);
file.add(save);
file.add(saveas);
file.addseparator();
file.add(exit);
// 编辑
edit.add(undo);
edit.addseparator();
edit.add(cut);
edit.add(copy);
edit.add(paste);
edit.addseparator();
edit.add(findrep);
edit.addseparator();
edit.add(selectall);
// 格式
format.add(font);
// 帮助
help.add(about);
// 菜单栏
menubar.add(file);
menubar.add(edit);
menubar.add(format);
menubar.add(help);
// 右键菜单
popup.add(cut2);
popup.add(copy2);
popup.add(paste2);
popup.addseparator();
popup.add(selectall2);
// 添加到文本域容器
textarea.add(popup);
// 匿名内部类监听器右键动作
textarea.addmouselistener(new mouseadapter() {
public void mousereleased(mouseevent e) {
if (e.getbutton() == mouseevent.button3) {
popup.show(textarea, e.getx(), e.gety());
}
}
});
// 边界布局
this.add(menubar, borderlayout.north);
this.add(scroll, borderlayout.center);
this.settitle("记事本");
this.setsize(500, 400);
this.setlocationrelativeto(null);
this.seticonimage(new imageicon(this.getclass().getresource("/icon/notepad.png")).getimage());//图标放在源目录的icon文件夹
this.setdefaultcloseoperation(jframe.dispose_on_close);
this.setvisible(true);
}
// 重写actionperformed
@override
public void actionperformed(actionevent e) {
// event对象发生源
if (e.getsource() == open) {
jfilechooser chooser = new jfilechooser();
filenameextensionfilter filter = new filenameextensionfilter("文本文档(*.txt)", "txt");
chooser.setfilefilter(filter);
chooser.setdialogtitle("文件打开");
chooser.showopendialog(null);
chooser.setvisible(true);
try {
pathselect = chooser.getselectedfile().getpath();
filereader wjl = new filereader(pathselect);
bufferedreader hcl = new bufferedreader(wjl);
string s = "", zfc = "";
while ((s = hcl.readline()) != null) {
zfc += (s + "\n");
}
textarea.settext(zfc);
} catch (exception e1) {
}
}
if (e.getsource() == saveas) {// 另存为
jfilechooser chooser = new jfilechooser();
filenameextensionfilter filter = new filenameextensionfilter("文本文档(*.txt)", "txt");
chooser.setfilefilter(filter);
chooser.setdialogtitle("另存为");
chooser.showsavedialog(null);
chooser.setvisible(true);
printstream ps;
try {
string select = chooser.getselectedfile().getpath();
ps = new printstream(select);
system.setout(ps);
system.out.println(this.textarea.gettext());
} catch (exception e1) {
}
}
if (e.getsource() == save && (pathselect == null)) {// 保存
jfilechooser chooser = new jfilechooser();
chooser.setdialogtitle("保存");
chooser.showsavedialog(null);
chooser.setvisible(true);
printstream ps;
try {
pathselect = chooser.getselectedfile().getpath();
ps = new printstream(pathselect);
system.setout(ps);
system.out.println(this.textarea.gettext());
} catch (exception e1) {
}
} else if (e.getsource() == save && !(pathselect == null)) {
printstream ps;
try {
ps = new printstream(pathselect);
system.setout(ps);
system.out.println(this.textarea.gettext());
} catch (filenotfoundexception e1) {
}
}
if (e.getsource() == create) {
textarea.settext("");
pathselect = null;
}
if (e.getsource() == exit) {
system.exit(0);
}
if (e.getsource() == undo) {
if (um.canundo()) {
um.undo();
}
}
if (e.getsource() == cut || e.getsource() == cut2) {
textarea.cut();
} else if (e.getsource() == copy || e.getsource() == copy2) {
textarea.copy();
} else if (e.getsource() == paste || e.getsource() == paste2) {
textarea.paste();
} else if (e.getsource() == findrep) {
new findandreplace(textarea);
}
else if (e.getsource() == selectall || e.getsource() == selectall2) {
textarea.selectall();
}
if (e.getsource() == font) {
new format(textarea);
}
if (e.getsource() == about) {
new about();
}
}
public static void main(string[] args) {
new jnotepad();
}
}
class findandreplace extends jdialog implements actionlistener {// 查找和替换
jlabel findlabel = new jlabel("查找内容：");
jlabel replabel = new jlabel(" 替换为：");
jtextfield findtf = new jtextfield(8);
jtextfield reptf = new jtextfield(8);
jbutton findbtn = new jbutton("查找");
jbutton repbtn = new jbutton("替换");
jpanel findpn = new jpanel();
jpanel reppn = new jpanel();
jtextarea textarea;
string text;
boolean flg = false;
int len;
int start = 0;
int k = 0;
public findandreplace(jtextarea textarea) {
this.textarea = textarea;
findpn.add(findlabel);
findpn.add(findtf);
findpn.add(findbtn);
reppn.add(replabel);
reppn.add(reptf);
reppn.add(repbtn);
this.add(findpn);
this.add(reppn);
findbtn.addactionlistener(this);
repbtn.addactionlistener(this);
this.settitle("查找和替换");
this.setlayout(new gridlayout(2, 1));
// this.setbounds(400, 200, 300, 140);
this.pack();
this.setlocationrelativeto(null);
this.setresizable(false);
this.setvisible(true);
this.setdefaultcloseoperation(jdialog.dispose_on_close);
}
@suppresswarnings("deprecation")
public void actionperformed(actionevent e) {
string findtext = findtf.gettext();
string reptext = reptf.gettext();
text = textarea.gettext();
if (e.getsource() == findbtn) {
findbtn.setlabel("下一个");
if (findtext != null) {
len = findtext.length();
start = text.indexof(findtext, k);
k = start + len;
textarea.select(start, start + len);
flg = true;
if (start == -1) {
joptionpane.showmessagedialog(null, "已到文件尾部！", "提示", joptionpane.information_message);
start = 0;
k = 0;
flg = false;
}
}
} else if (e.getsource() == repbtn) {
if (flg) {
textarea.replacerange(reptext, start, start + len);
flg = false;
}
}
}
}
// 字体格式
class format extends jdialog implements actionlistener {
public static int style = 0; // 全局变量类型，默认值为0
public static int size = 16; // 全局变量字体大小，默认值为16
public static font font = new font("新宋体", style, size); // 全局变量字体，默认值为新宋体
jpanel pn = new jpanel();
jpanel okcelpn = new jpanel();
jpanel fontpn = new jpanel();
jpanel ptpn = new jpanel();
jlabel fontlabel = new jlabel("字体: ");
jlabel fontstylelabel = new jlabel(" 字形: ");
jlabel ptlabel = new jlabel("磅值: ");
jbutton ok = new jbutton("确定");
jbutton cancel = new jbutton("取消");
graphicsenvironment e = graphicsenvironment.getlocalgraphicsenvironment();// 获取系统中可用的字体的名字
string[] fontname = e.getavailablefontfamilynames();// 获取系统中可用的字体的名字
string[] fonttype = { "常规", "倾斜", "粗体", "粗偏斜体" };
jlist fontlist = new jlist(fontname);
jlist fonttypelist = new jlist(fonttype);
jscrollpane fontscroll = new jscrollpane(fontlist);
jscrollpane fonttypescroll = new jscrollpane(fonttypelist);
jtextarea textarea;
spinnermodel spinnermodel = new spinnernumbermodel(size, // initial value
0, // min
100, // max
2 // step
);
jspinner spinner = new jspinner(spinnermodel);
public format(jtextarea textarea) {
this.textarea = textarea;
ok.addactionlistener(this);
cancel.addactionlistener(this);
pn.setlayout(new gridlayout(2, 1));
pn.add(fontpn);
pn.add(ptpn);
fontpn.add(fontlabel);
fontpn.add(fontscroll);
fontpn.add(fontstylelabel);
fontpn.add(fonttypescroll);
ptpn.add(ptlabel);
ptpn.add(spinner);
fontlist.setvisiblerowcount(5);
fontlist.setfixedcellwidth(60);
fontlist.setselectedindex(50);
fontlist.setselectedvalue(font.getfontname(), true);
fonttypelist.setvisiblerowcount(5);
fonttypelist.setselectedindex(style);
okcelpn.add(ok);
okcelpn.add(cancel);
okcelpn.setlayout(new flowlayout(flowlayout.right));
this.add(pn, borderlayout.center);
this.add(okcelpn, borderlayout.south);
this.settitle("字体");
this.pack();
this.setlocationrelativeto(null);
this.setresizable(false);
this.setvisible(true);
this.setdefaultcloseoperation(jframe.dispose_on_close);
}
public void actionperformed(actionevent e) {
if (e.getsource() == ok) {
system.out.println(fontlist.getselectedvalue());
style = this.type();
size = integer.parseint(spinner.getvalue().tostring());
font = new font((string) fontlist.getselectedvalue(), style, size);
textarea.setfont(font);
this.dispose();
system.out.println(type());
} else if (e.getsource() == cancel) {
this.dispose();
}
}
private int type() {
if (fonttypelist.getselectedvalue().equals("倾斜")) {
return 1;
} else if (fonttypelist.getselectedvalue().equals("粗体")) {
return 2;
} else if (fonttypelist.getselectedvalue().equals("粗偏斜体")) {
return 3;
} else
return 0;
}
}
class about extends jdialog {// 关于窗口
about() {
joptionpane.showmessagedialog(null, " 作者：cjb 版本：v1.5\n\n 联系：cjbi@outlook.com", "关于",
joptionpane.plain_message);
}
}
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持CodeAE代码之家。
文档来源：http://www.zzvips.com/article/179061.html
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