欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页  >  IT编程

一个简单的文本编辑器

程序员文章站 2022-05-25 19:49:20
https://blog.csdn.net/asd529735325 package UserJFrame; import java.awt.BorderLayout;import java.awt.Button;import java.awt.Color;import java.awt.Dimen ......
package userjframe;
 
import java.awt.borderlayout;
import java.awt.button;
import java.awt.color;
import java.awt.dimension;
import java.awt.filedialog;
import java.awt.font;
import java.awt.graphicsenvironment;
import java.awt.gridlayout;
import java.awt.label;
import java.awt.menubar;
import java.awt.panel;
import java.awt.trayicon.messagetype;
import java.awt.event.actionevent;
import java.awt.event.actionlistener;
import java.awt.event.mouseevent;
import java.awt.event.mouselistener;
import java.awt.font.textlayout;
 
import javax.swing.buttongroup;
import javax.swing.grouplayout;
import javax.swing.grouplayout.group;
import javax.swing.jbutton;
import javax.swing.jcheckbox;
import javax.swing.jcombobox;
import javax.swing.jdialog;
import javax.swing.jfilechooser;
import javax.swing.jframe;
import javax.swing.jmenu;
import javax.swing.jmenubar;
import javax.swing.jmenuitem;
import javax.swing.joptionpane;
import javax.swing.jpanel;
import javax.swing.jpopupmenu;
import javax.swing.jradiobutton;
import javax.swing.jscrollpane;
import javax.swing.jtextarea;
import javax.swing.jtextfield;
import javax.swing.jtoolbar;
import javax.swing.layoutstyle;
import javax.swing.filechooser.filenameextensionfilter;
import javax.swing.plaf.basic.basicborders.radiobuttonborder;
import javax.swing.text.stylededitorkit.boldaction;
 
public class userjframe extends jframe implements actionlistener, mouselistener {
    private jbutton btnadd;
    private jtextarea textarea;
    private jradiobutton btnman,btnfelman;
    private jtextfield tfdnumber,tfdname;
    private jcombobox comprovince,comcitys;
    private int number=1;
    private object[][] citys;
    private jtextfield tfd1;
    private jmenuitem jmenuitemcolor[]=null;
    private jdialog jdialog1,jdialogsave;
    private font font1;
    private jpopupmenu jpopupmenu;
    private jpanel jpanel1,jpanel2;
    private jcombobox combofonename,combofonesize;
    private jcheckbox checkbold,checkitalic;
    private jradiobutton radiocolor[];
    private font font;
    public userjframe(object[] province, object[][] citys) {
        super("个人信息统计");
        this.citys=citys;
        this.setbounds(200, 200, 650, 400);
        this.getcontentpane().setbackground(color.lightgray);
        this.getcontentpane().setlayout(new borderlayout());
        this.setdefaultcloseoperation(exit_on_close);
        //设置菜单栏
        addmymenu();//调用下面声明的菜单栏相关代码
        jpanel1=new jpanel();//用来存放工具栏的面板
        jpanel2=new jpanel();//用来搞下面的文本区和信息添加区的面板
        jtoolbar jtoolbar=new jtoolbar();//给工具栏开空间
        //以下为工具栏的内容,包括字体大小设置,字体设置,字形选择框
        //获取系统字体
        graphicsenvironment ge=graphicsenvironment.getlocalgraphicsenvironment();
        string fonesname[]=ge.getavailablefontfamilynames();
        combofonename=new jcombobox(fonesname);
        combofonename.addactionlistener(this);//添加字体的监听
        jtoolbar.add(combofonename);
        //字体大小设置
        string fonessize[]={"20","30","40","50","60","70"};
        combofonesize=new jcombobox(fonessize);
        combofonesize.addactionlistener(this);
        jtoolbar.add(combofonesize);
        combofonesize.seteditable(true);
        //字体选择
        checkbold=new jcheckbox("粗体");
        checkitalic=new jcheckbox("斜体");
        jtoolbar.add(checkbold);
        jtoolbar.add(checkitalic);
        //颜色选择
        string colorstr[]={"红","绿","蓝","黑"};
        radiocolor=new jradiobutton[colorstr.length];
        buttongroup group=new buttongroup();
        for(int i=0;i<colorstr.length;i++){
            radiocolor[i]=new jradiobutton(colorstr[i]);
            jtoolbar.add(radiocolor[i]);
            group.add(radiocolor[i]);
            radiocolor[i].addactionlistener(this);
        }
        jpanel1.add(jtoolbar);//工具栏加到jpanel1中
        this.getcontentpane().add(jpanel1, borderlayout.north);//设定jpanel1的位置并添加到整个面板中
        this.getcontentpane().add(jpanel2);//jpanel2添加进去
        jpanel2.setlayout(new gridlayout(1, 2));//把界面1分2,左边为文本框眼,右边为信息添加部分栏
        textarea=new jtextarea();
        //textarea.seteditable(false);   //如果有这条代码,则文本框不可编辑
        jpanel2.add(new jscrollpane(textarea));
        jpanel jpanel=new jpanel(new gridlayout(7, 1));
        jpanel2.add(jpanel);
        //把各种元素加进右边面板
        tfdnumber=new jtextfield("1");
        tfdnumber.seteditable(false);
        jpanel.add(tfdnumber);
        
        tfdname=new jtextfield("姓名:");
        jpanel.add(tfdname);
        
        jpanel jpanelrd=new jpanel(new gridlayout(1,2));
        btnman=new jradiobutton("男",true);
        btnfelman=new jradiobutton("女");
        jpanelrd.add(btnman);
        jpanelrd.add(btnfelman);
        jpanel.add(jpanelrd);
        buttongroup btngroup=new buttongroup();// 使其中的按键(男,女)互斥,只能选择一个,所以把他们放在同一个按键组里
        btngroup.add(btnman);
        btngroup.add(btnfelman);
        //省份组合框
        comprovince=new jcombobox(province);
        comprovince.addactionlistener(this);
        jpanel.add(comprovince);
        
        comcitys=new jcombobox(citys[0]);
        jpanel.add(comcitys);
        
        tfd1=new jtextfield("备注:");
        jpanel.add(tfd1);
            
        btnadd=new jbutton("添加");
        btnadd.addactionlistener(this);
        jpanel.add(btnadd);
        //添加鼠标右键快捷菜单
        jpopupmenu=new jpopupmenu();
        string popumenuitem[]={"粘贴","复制","剪切"};
        jmenuitem popumenuitemadd[]=new jmenuitem[popumenuitem.length];
        for(int i=0;i<popumenuitem.length;i++){
            popumenuitemadd[i]=new jmenuitem(popumenuitem[i]);
            jpopupmenu.add(popumenuitemadd[i]);
            popumenuitemadd[i].addactionlistener(this);
        }
        textarea.add(jpopupmenu);
        textarea.addmouselistener(this);
        this.setvisible(true);
    }
    private void addmymenu() {
        jmenubar jmenubar=new jmenubar();
        setjmenubar(jmenubar);
        string menustr[]={"文件","编辑","帮助"};
        jmenu menu[]=new jmenu[menustr.length];
        for(int i=0;i<menustr.length;i++){
            menu[i]=new jmenu(menustr[i]);
            jmenubar.add(menu[i]);
        }
        //"文件"菜单的子菜单
        jmenuitem open=new jmenuitem("打开");
        open.setactioncommand("open");
        open.addactionlistener(this);
        menu[0].add(open);
        jmenuitem save=new jmenuitem("保存");
        menu[0].add(save);
        
        menu[0].addseparator();
        
        jmenuitem past=new jmenuitem("粘贴");
        past.addactionlistener(this);
        menu[0].add(past);
        
        jmenuitem copy=new jmenuitem("复制");
        copy.addactionlistener(this);
        menu[0].add(copy);
        
        jmenuitem cut=new jmenuitem("剪切");
        cut.addactionlistener(this);
        menu[0].add(cut);
        
        menu[0].addseparator();
        
        jmenuitem exit=new jmenuitem("退出");
        exit.setactioncommand("exit");
        exit.addactionlistener(this);
        menu[0].add(exit);
        //"编辑 "菜单的子菜单
        jmenu wordstyle=new jmenu("字形");
        menu[1].add(wordstyle);
        jmenu colorstyle=new jmenu("颜色设置");
        menu[1].add(colorstyle);
        //设置“字形的二级菜单”
        string wordstyle1[]={"粗体","斜体"};
        jmenuitem jmenuitem[]=new jmenuitem[wordstyle1.length];
        for(int i=0;i<wordstyle1.length;i++){
            jmenuitem[i]=new jmenuitem(wordstyle1[i]);
            wordstyle.add(jmenuitem[i]);
            jmenuitem[i].addactionlistener(this);
        }
        //设置“颜色设置”二级菜单
        string colorstyle1[]={"红","绿","蓝","黑"};
        jmenuitemcolor=new jmenuitem[colorstyle1.length];
        for(int i=0;i<colorstyle1.length;i++){
            jmenuitemcolor[i]=new jmenuitem(colorstyle1[i]);
            colorstyle.add(jmenuitemcolor[i]);
            jmenuitemcolor[i].addactionlistener(this);
        }
        
        jmenuitem jmenuitemhelp=new jmenuitem("相关帮助咨询");
        jmenuitemhelp.addactionlistener(this);
        menu[2].add(jmenuitemhelp);
 
    }
    
@override
    public void actionperformed(actionevent e) {
        if(e.getsource()==btnadd){
            string aline;
            //添加名字和编号
            aline=this.number+","+tfdname.gettext();
            //添加性别
            if(btnman.isselected()){
                aline=aline+","+btnman.gettext();
            }
            if(btnfelman.isselected()){
                aline=aline+","+btnfelman.gettext();
            }
            //添加省份
            aline=aline+","+comprovince.getselecteditem();
            
            //添加市级
            aline=aline+","+comcitys.getselecteditem();
            //添加备注
            aline=aline+","+tfd1.gettext();
            tfd1.settext("备注:");
            
            textarea.append(aline+"\n");
            this.number++;
            tfdnumber.settext(""+this.number);
            tfdname.settext("姓名:");
            
        }
        
        else if(e.getsource()==comprovince){
            int i=comprovince.getselectedindex();
            comcitys.removeallitems();
            system.out.println(citys[i].length);
            for(int j=0;j<citys[i].length;j++){
                comcitys.additem(citys[i][j]);
            }
        }
        else if(e.getsource() instanceof jmenuitem||e.getsource() instanceof jradiobutton){
            //设置颜色的监听
            color color=null;  //用传参的思维做颜色
            if(e.getactioncommand().equals("红")){
                color=new color(255,0,0);
            }
            if(e.getactioncommand().equals("绿")){
                color=new color(0,255,0);
            }
            if(e.getactioncommand().equals("蓝")){
                color=new color(0,0,255);
            }
            if(e.getactioncommand().equals("黑")){
                color=new color(0,0,0);
            }
            textarea.setforeground(color);
            //设置帮助的监听
            if(e.getactioncommand().equalsignorecase("相关帮助咨询")){
                jdialog1=new jdialog(this,true);
                jdialog1.setsize(330, 100);
                int lx=getx()+20;
                int ly=gety()+20;
                jdialog1.setlocation(lx, ly);
                jdialog1.add(new label("相关帮助请咨询电话10010,最终解释权归联通公司所有!"));
                jdialog1.setvisible(true);
            }
            //设置字形的监听
            if(e.getactioncommand().equals("粗体")){
                font1=new font(getname(),20, 20);
                textarea.setfont(font1);
            }
            if(e.getactioncommand().equals("斜体")){
                
            }
            //退出的监听
            if(e.getactioncommand().equalsignorecase("exit")){
                int option=joptionpane.showconfirmdialog(this, "你确定保存并退出么?");
                if(option==joptionpane.ok_option){
                    system.out.println("保存中...");
                    system.exit(0);
                }
                if(option==joptionpane.no_option){
                    system.exit(0);
                }
                if(option==joptionpane.cancel_option){
                    return;
                }
                
            }
            //保存的监听
            if(e.getactioncommand().equalsignorecase("复制")){
                textarea.copy();
            }
            //粘贴监听
            if(e.getactioncommand().equalsignorecase("粘贴")){
                textarea.paste();
            }
            //剪切监听
            if(e.getactioncommand().equalsignorecase("剪切")){
                textarea.cut();
            }
            //打开的监听
            if(e.getactioncommand().equals("open")){
                openfile();
            }
        
        }    //字形的监听
        /*if(e.getsource() instanceof jcombobox ){
                string fontname=(string) combofonename.getselecteditem();
                int fontsize=0;
                string strsize=(string) combofonesize.getselecteditem();
                int style = changestyle(e);
                font=new font(fontname, style, fontsize);
                textarea.setfont(font);
        }
    }
    private int changestyle(actionevent e) {
    // todo auto-generated method stub
    return 0;*/
    }
    private void openfile() {
        filedialog openfiledlg = new filedialog(this, "打开文件", filedialog.load);
        openfiledlg.setvisible(true);
}
    
    @override
    public void mouseclicked(mouseevent e) {
        if(e.getmodifiers()==mouseevent.button3_mask){
            jpopupmenu.show(textarea,e.getx(), e.gety());
        }
    }
    public void mousepressed(mouseevent e) {
    }
    public void mousereleased(mouseevent e) {
    }
    public void mouseentered(mouseevent e) {
    }
    public void mouseexited(mouseevent e) {
    }
    public static void main(string[] args) {
        object province[]={"四川省","湖南省","江苏省"};
        object citys[][]={{"成都市","遂宁市","南充市","德阳市","绵阳市"},
                          {"益阳市","长沙市","株洲市","湘潭市","岳阳市"},
                          {"南京市","苏州市","无锡市"}
        };
        new userjframe(province,citys);
    }
}

https://blog.csdn.net/asd529735325

package userjframe; import java.awt.borderlayout;import java.awt.button;import java.awt.color;import java.awt.dimension;import java.awt.filedialog;import java.awt.font;import java.awt.graphicsenvironment;import java.awt.gridlayout;import java.awt.label;import java.awt.menubar;import java.awt.panel;import java.awt.trayicon.messagetype;import java.awt.event.actionevent;import java.awt.event.actionlistener;import java.awt.event.mouseevent;import java.awt.event.mouselistener;import java.awt.font.textlayout; import javax.swing.buttongroup;import javax.swing.grouplayout;import javax.swing.grouplayout.group;import javax.swing.jbutton;import javax.swing.jcheckbox;import javax.swing.jcombobox;import javax.swing.jdialog;import javax.swing.jfilechooser;import javax.swing.jframe;import javax.swing.jmenu;import javax.swing.jmenubar;import javax.swing.jmenuitem;import javax.swing.joptionpane;import javax.swing.jpanel;import javax.swing.jpopupmenu;import javax.swing.jradiobutton;import javax.swing.jscrollpane;import javax.swing.jtextarea;import javax.swing.jtextfield;import javax.swing.jtoolbar;import javax.swing.layoutstyle;import javax.swing.filechooser.filenameextensionfilter;import javax.swing.plaf.basic.basicborders.radiobuttonborder;import javax.swing.text.stylededitorkit.boldaction; public class userjframe extends jframe implements actionlistener, mouselistener {private jbutton btnadd;private jtextarea textarea;private jradiobutton btnman,btnfelman;private jtextfield tfdnumber,tfdname;private jcombobox comprovince,comcitys;private int number=1;private object[][] citys;private jtextfield tfd1;private jmenuitem jmenuitemcolor[]=null;private jdialog jdialog1,jdialogsave;private font font1;private jpopupmenu jpopupmenu;private jpanel jpanel1,jpanel2;private jcombobox combofonename,combofonesize;private jcheckbox checkbold,checkitalic;private jradiobutton radiocolor[];private font font;public userjframe(object[] province, object[][] citys) {super("个人信息统计");this.citys=citys;this.setbounds(200, 200, 650, 400);this.getcontentpane().setbackground(color.lightgray);this.getcontentpane().setlayout(new borderlayout());this.setdefaultcloseoperation(exit_on_close);//设置菜单栏addmymenu();//调用下面声明的菜单栏相关代码jpanel1=new jpanel();//用来存放工具栏的面板jpanel2=new jpanel();//用来搞下面的文本区和信息添加区的面板jtoolbar jtoolbar=new jtoolbar();//给工具栏开空间//以下为工具栏的内容,包括字体大小设置,字体设置,字形选择框//获取系统字体graphicsenvironment ge=graphicsenvironment.getlocalgraphicsenvironment();string fonesname[]=ge.getavailablefontfamilynames();combofonename=new jcombobox(fonesname);combofonename.addactionlistener(this);//添加字体的监听jtoolbar.add(combofonename);//字体大小设置string fonessize[]={"20","30","40","50","60","70"};combofonesize=new jcombobox(fonessize);combofonesize.addactionlistener(this);jtoolbar.add(combofonesize);combofonesize.seteditable(true);//字体选择checkbold=new jcheckbox("粗体");checkitalic=new jcheckbox("斜体");jtoolbar.add(checkbold);jtoolbar.add(checkitalic);//颜色选择string colorstr[]={"红","绿","蓝","黑"};radiocolor=new jradiobutton[colorstr.length];buttongroup group=new buttongroup();for(int i=0;i<colorstr.length;i++){radiocolor[i]=new jradiobutton(colorstr[i]);jtoolbar.add(radiocolor[i]);group.add(radiocolor[i]);radiocolor[i].addactionlistener(this);}jpanel1.add(jtoolbar);//工具栏加到jpanel1中this.getcontentpane().add(jpanel1, borderlayout.north);//设定jpanel1的位置并添加到整个面板中this.getcontentpane().add(jpanel2);//jpanel2添加进去jpanel2.setlayout(new gridlayout(1, 2));//把界面1分2,左边为文本框眼,右边为信息添加部分栏textarea=new jtextarea();//textarea.seteditable(false);   //如果有这条代码,则文本框不可编辑jpanel2.add(new jscrollpane(textarea));jpanel jpanel=new jpanel(new gridlayout(7, 1));jpanel2.add(jpanel);//把各种元素加进右边面板tfdnumber=new jtextfield("1");tfdnumber.seteditable(false);jpanel.add(tfdnumber);tfdname=new jtextfield("姓名:");jpanel.add(tfdname);jpanel jpanelrd=new jpanel(new gridlayout(1,2));btnman=new jradiobutton("男",true);btnfelman=new jradiobutton("女");jpanelrd.add(btnman);jpanelrd.add(btnfelman);jpanel.add(jpanelrd);buttongroup btngroup=new buttongroup();// 使其中的按键(男,女)互斥,只能选择一个,所以把他们放在同一个按键组里btngroup.add(btnman);btngroup.add(btnfelman);//省份组合框comprovince=new jcombobox(province);comprovince.addactionlistener(this);jpanel.add(comprovince);comcitys=new jcombobox(citys[0]);jpanel.add(comcitys);tfd1=new jtextfield("备注:");jpanel.add(tfd1);btnadd=new jbutton("添加");btnadd.addactionlistener(this);jpanel.add(btnadd);//添加鼠标右键快捷菜单jpopupmenu=new jpopupmenu();string popumenuitem[]={"粘贴","复制","剪切"};jmenuitem popumenuitemadd[]=new jmenuitem[popumenuitem.length];for(int i=0;i<popumenuitem.length;i++){popumenuitemadd[i]=new jmenuitem(popumenuitem[i]);jpopupmenu.add(popumenuitemadd[i]);popumenuitemadd[i].addactionlistener(this);}textarea.add(jpopupmenu);textarea.addmouselistener(this);this.setvisible(true);}private void addmymenu() {jmenubar jmenubar=new jmenubar();setjmenubar(jmenubar);string menustr[]={"文件","编辑","帮助"};jmenu menu[]=new jmenu[menustr.length];for(int i=0;i<menustr.length;i++){menu[i]=new jmenu(menustr[i]);jmenubar.add(menu[i]);}//"文件"菜单的子菜单jmenuitem open=new jmenuitem("打开");open.setactioncommand("open");open.addactionlistener(this);menu[0].add(open);jmenuitem save=new jmenuitem("保存");menu[0].add(save);menu[0].addseparator();jmenuitem past=new jmenuitem("粘贴");past.addactionlistener(this);menu[0].add(past);jmenuitem copy=new jmenuitem("复制");copy.addactionlistener(this);menu[0].add(copy);jmenuitem cut=new jmenuitem("剪切");cut.addactionlistener(this);menu[0].add(cut);menu[0].addseparator();jmenuitem exit=new jmenuitem("退出");exit.setactioncommand("exit");exit.addactionlistener(this);menu[0].add(exit);//"编辑 "菜单的子菜单jmenu wordstyle=new jmenu("字形");menu[1].add(wordstyle);jmenu colorstyle=new jmenu("颜色设置");menu[1].add(colorstyle);//设置“字形的二级菜单”string wordstyle1[]={"粗体","斜体"};jmenuitem jmenuitem[]=new jmenuitem[wordstyle1.length];for(int i=0;i<wordstyle1.length;i++){jmenuitem[i]=new jmenuitem(wordstyle1[i]);wordstyle.add(jmenuitem[i]);jmenuitem[i].addactionlistener(this);}//设置“颜色设置”二级菜单string colorstyle1[]={"红","绿","蓝","黑"};jmenuitemcolor=new jmenuitem[colorstyle1.length];for(int i=0;i<colorstyle1.length;i++){jmenuitemcolor[i]=new jmenuitem(colorstyle1[i]);colorstyle.add(jmenuitemcolor[i]);jmenuitemcolor[i].addactionlistener(this);}jmenuitem jmenuitemhelp=new jmenuitem("相关帮助咨询");jmenuitemhelp.addactionlistener(this);menu[2].add(jmenuitemhelp); }@overridepublic void actionperformed(actionevent e) {if(e.getsource()==btnadd){string aline;//添加名字和编号aline=this.number+","+tfdname.gettext();//添加性别if(btnman.isselected()){aline=aline+","+btnman.gettext();}if(btnfelman.isselected()){aline=aline+","+btnfelman.gettext();}//添加省份aline=aline+","+comprovince.getselecteditem();//添加市级aline=aline+","+comcitys.getselecteditem();//添加备注aline=aline+","+tfd1.gettext();tfd1.settext("备注:");textarea.append(aline+"\n");this.number++;tfdnumber.settext(""+this.number);tfdname.settext("姓名:");}else if(e.getsource()==comprovince){int i=comprovince.getselectedindex();comcitys.removeallitems();system.out.println(citys[i].length);for(int j=0;j<citys[i].length;j++){comcitys.additem(citys[i][j]);}}else if(e.getsource() instanceof jmenuitem||e.getsource() instanceof jradiobutton){//设置颜色的监听color color=null;  //用传参的思维做颜色if(e.getactioncommand().equals("红")){color=new color(255,0,0);}if(e.getactioncommand().equals("绿")){color=new color(0,255,0);}if(e.getactioncommand().equals("蓝")){color=new color(0,0,255);}if(e.getactioncommand().equals("黑")){color=new color(0,0,0);}textarea.setforeground(color);//设置帮助的监听if(e.getactioncommand().equalsignorecase("相关帮助咨询")){jdialog1=new jdialog(this,true);jdialog1.setsize(330, 100);int lx=getx()+20;int ly=gety()+20;jdialog1.setlocation(lx, ly);jdialog1.add(new label("相关帮助请咨询电话10010,最终解释权归联通公司所有!"));jdialog1.setvisible(true);}//设置字形的监听if(e.getactioncommand().equals("粗体")){font1=new font(getname(),20, 20);textarea.setfont(font1);}if(e.getactioncommand().equals("斜体")){}//退出的监听if(e.getactioncommand().equalsignorecase("exit")){int option=joptionpane.showconfirmdialog(this, "你确定保存并退出么?");if(option==joptionpane.ok_option){system.out.println("保存中...");system.exit(0);}if(option==joptionpane.no_option){system.exit(0);}if(option==joptionpane.cancel_option){return;}}//保存的监听if(e.getactioncommand().equalsignorecase("复制")){textarea.copy();}//粘贴监听if(e.getactioncommand().equalsignorecase("粘贴")){textarea.paste();}//剪切监听if(e.getactioncommand().equalsignorecase("剪切")){textarea.cut();}//打开的监听if(e.getactioncommand().equals("open")){openfile();}}//字形的监听/*if(e.getsource() instanceof jcombobox ){string fontname=(string) combofonename.getselecteditem();int fontsize=0;string strsize=(string) combofonesize.getselecteditem();int style = changestyle(e);font=new font(fontname, style, fontsize);textarea.setfont(font);}}private int changestyle(actionevent e) {// todo auto-generated method stubreturn 0;*/}private void openfile() {filedialog openfiledlg = new filedialog(this, "打开文件", filedialog.load);        openfiledlg.setvisible(true);}@overridepublic void mouseclicked(mouseevent e) {if(e.getmodifiers()==mouseevent.button3_mask){jpopupmenu.show(textarea,e.getx(), e.gety());}}public void mousepressed(mouseevent e) {}public void mousereleased(mouseevent e) {}public void mouseentered(mouseevent e) {}public void mouseexited(mouseevent e) {}public static void main(string[] args) {object province[]={"四川省","湖南省","江苏省"};object citys[][]={{"成都市","遂宁市","南充市","德阳市","绵阳市"},  {"益阳市","长沙市","株洲市","湘潭市","岳阳市"},  {"南京市","苏州市","无锡市"}};new userjframe(province,citys);}}<img src="https://img-blog.csdn.net/20160306201345897?watermark/2/text/ahr0cdovl2jsb2cuy3nkbi5uzxqv/font/5a6l5l2t/fontsize/400/fill/i0jbqkfcma==/dissolve/70/gravity/center" alt="" />--------------------- 作者:0世界和平0 来源:csdn 原文:https://blog.csdn.net/asd529735325/article/details/50815019 版权声明:本文为博主原创文章,转载请附上博文链接!