📄 hashtable简易数据库程序.mht
字号:
<BR>System.out.print("=C7=EB=CA=E4=C8=EB=D2=AA=C9=BE=B3=FD=B5=C4=CA=FD=BE=
=DD=B1=E0=BA=C5:"); =20
<BR>id=3Dgetid(count); =
<BR>key=3DString.valueOf(id); =20
<BR>htable.remove(key);//remove data =
<BR>count--; =20
<BR>num=3Dcount; =20
=
<BR>System.out.print("=D2=D1=C9=BE=B3=FD=C1=CB=CB=F9=D1=A1=D4=F1=B5=C4=CA=
=FD=BE=DD...=B0=B4=C8=CE=D2=E2=BC=FB=BC=CC=D0=F8..."); =20
=
<BR>Hashtable htable1=3Dnew Hashtable(20,0.75F);//create n=
ew htable named htable1 =20
=
<BR>elements=3Dhtable.elements();//fetch all the data =
;from htable =20
<BR>while(elements.hasMoreElements()) <BR>{ =20
<BR>key=3DString.valueOf(num);//a new value =20
=
<BR>data=3D(String)elements.nextElement();//fetch content of&nb=
sp;the data =20
=
<BR>htable1.put(key,data);//store it to htable1 =20
<BR>num--; <BR>} <BR>htable.clear(); =20
<BR>enter=3Dbufin.readLine(); =
<BR>new str14(htable1); =20
<BR>break; <BR>case 5: =20
=
<BR>String[] sortkey=3Dnew String[count];//create a n=
ew sort array =20
<BR>String[] sortdata=3Dnew String[count]; =20
<BR>num=3Dcount; =
<BR>elements=3Dhtable.elements(); =20
<BR>keys=3Dhtable.keys(); =20
<BR>while(elements.hasMoreElements()) <BR>{ =20
=
<BR>key=3D(String)keys.nextElement();//fetch value of key&=
nbsp;=20
=
<BR>data=3D(String)elements.nextElement();//fetch value of =
;data =20
=
<BR>sortkey[num-1]=3Dkey;//store the value of key&nbs=
p;to sortkey array =20
=
<BR>sortdata[num-1]=3Ddata;//store the value of data&=
nbsp;to sortdata array =20
<BR>num--; <BR>} =
<BR>System.out.println("<BR>=B1=E0=BA=C5"+"=20
"+"=C4=DA=C8=DD"); =20
=
<BR>for(int i=3D0;i<count;i++)//display all content&nbs=
p;after sorting =20
<BR>System.out.println(" "+sortkey[i]+" =
"+sortdata[i]); =20
=
<BR>System.out.print("<BR>=C4=BF=C7=B0=B9=B2=D3=D0"+count+"=B1=CA=CA=FD=BE=
=DD"); =20
=
<BR>System.out.print("<BR><BR>=B0=B4=C8=CE=D2=E2=BC=FC=BC=CC=D0=F8...");&=
nbsp;=20
<BR>enter=3Dbufin.readLine(); =
<BR>new str14(htable); =20
<BR>break; <BR>default: <BR>} <BR>} =20
=
<BR><BR>public int select() throws IOException//metho=
d of getting a function selector =20
<BR>{ <BR>String input; =
<BR>int value=3D0; =20
=
<BR>input=3Dbufin.readLine();//read a input from keyb=
oard =20
<BR>try <BR>{ =20
=
<BR>value=3DInteger.parseInt(input);//convert a string to&=
nbsp;a int value =20
=
<BR>}catch(NumberFormatException e)//can=A1=AFt vonverted =
=20
<BR>{ =
<BR>System.out.print("=C7=EB=CA=E4=C8=EB=D1=A1=CF=EE1~6:"); =20
<BR>value=3Dselect(); <BR>} =20
=
<BR>if(value>6||value<1)//if exceed then print =
a message and reenter =20
<BR>{ =
<BR>System.out.print("=C7=EB=CA=E4=C8=EB=D1=A1=CF=EE1~6:"); =20
<BR>value=3Dselect(); <BR>} =20
<BR>return value;//return a value =
<BR>} =20
=
<BR><BR>public int getid(int count)throws IOException=
//a method of return the number of dat=
a =20
<BR>{ <BR>String input; =
<BR>int value=3D0; =20
=
<BR>input=3Dbufin.readLine();//read a user input stri=
ng from keyboard =20
<BR>try <BR>{ =20
=
<BR>value=3DInteger.parseInt(input);//convert the string t=
o a int =20
=
<BR>}catch(NumberFormatException e)//if can=A1=AFt convert=
to a integer then reenter =20
<BR>{ =
<BR>System.out.print("=C7=EB=CA=E4=C8=EB=CA=FD=BE=DD=B1=E0=BA=C5:"); =
;=20
<BR>value=3Dgetid(count); <BR>} =20
=
<BR>if(value>count)//the input value is out o=
f bound =20
<BR>{ =
<BR>System.out.print("=CE=DE=B4=CB=B1=E0=BA=C5=B5=C4=CA=FD=BE=DD,=C7=EB=D6=
=D8=D0=C2=CA=E4=C8=EB:"); =20
<BR>getid(count); <BR>} =20
<BR>return value;//return a value =
<BR>} =20
<BR>} =20
<P><EM><FONT=20
=
size=3D2>=D4=DA=B1=A3=C1=F4http://www.javajia.com=D4=AD=B3=F6=B4=A6=B5=C4=
=C7=E9=BF=F6=CF=C2=A3=AC=BB=B6=D3=AD=D7=AA=D4=D8!</FONT></EM></P>
<P><A=20
=
href=3D"http://emailpage.activepower.net/model/send.asp?emailpage_id=3D26=
439"=20
target=3D_blank></A></P>
<P align=3Dcenter><A=20
=
href=3D"http://www.javajia.com/article.php?id=3D598#top"><IMG=20
src=3D"http://www.javajia.com/images/top.gif"=20
=
border=3D0></A></P></TD></TR></TBODY></TABLE></TD></TR></TBODY></TABLE>
<P> </P><FONT color=3D#0772b1><!--</FONT></BODY></HTML>
------=_NextPart_000_0036_01C52EE7.8AF2FAF0
Content-Type: image/gif
Content-Transfer-Encoding: base64
Content-Location: http://www.javajia.com/images/top.gif
R0lGODlhEwATAMQfAKurq+vs7Pn6+9vb22VlZYiIiNHS08TExOLk5fPz8/z9/Q9ZgpKSkllZWff3
9xthiSxskXd3d52dnfb5+kN9nTw8PCNmjZS0x7i4uGiTrDt3mvHx8f7+/glUf////+zs7CH5BAEA
AB8ALAAAAAATABMAAAXT4CeKiaBwHqc42+h+m+DNKWdz7JsotEdpPY6gJdrwZgLNYwGZ0DiBgEiG
hCw6WIvTsxkMPgmaANJ5YM0WwdCAGVDHZQFWgJ5sDIADj0NZPGRYHnQdEHcSEigIEH8zgYIPFgYG
DBEzExdHHo4eChcBBgUNKCk9m5wbBxENmaUdPQIIAAQEDj00mwoJkxUMG6OtMyuxBBUHH7VIPIEC
CQgYERUFRTIb1QkZGRsIeNAEBiMbAQOS5AcADMQExi7iGAASDAWqFdHfLyIDBxKqDQQM6yNCAAA7
------=_NextPart_000_0036_01C52EE7.8AF2FAF0
Content-Type: text/css;
charset="gb2312"
Content-Transfer-Encoding: quoted-printable
Content-Location: http://www.javajia.com/global.css
.sky {
FONT-SIZE: 12px; COLOR: #ff0000; LINE-HEIGHT: 27px; FONT-FAMILY: =
"tahoma"; TEXT-DECORATION: none
}
TD {
FONT-SIZE: 12px; LINE-HEIGHT: 130%; FONT-FAMILY: "=D0=C2=CB=CE=CC=E5", =
"=CB=CE=CC=E5"
}
FORM {
FONT-SIZE: 12px; LINE-HEIGHT: 130%; FONT-FAMILY: "=D0=C2=CB=CE=CC=E5", =
"=CB=CE=CC=E5"
}
P {
FONT-SIZE: 12px; LINE-HEIGHT: 130%; FONT-FAMILY: "=D0=C2=CB=CE=CC=E5", =
"=CB=CE=CC=E5"
}
LI {
FONT-SIZE: 12px; LINE-HEIGHT: 130%; FONT-FAMILY: "=D0=C2=CB=CE=CC=E5", =
"=CB=CE=CC=E5"
}
TEXTAREA {
FONT-SIZE: 12px; LINE-HEIGHT: 130%; FONT-FAMILY: "=D0=C2=CB=CE=CC=E5", =
"=CB=CE=CC=E5"
}
INPUT {
FONT-SIZE: 12px; FONT-FAMILY: "=D0=C2=CB=CE=CC=E5", "=CB=CE=CC=E5"; =
HEIGHT: 20px
}
SELECT {
FONT-SIZE: 12px; FONT-FAMILY: "=D0=C2=CB=CE=CC=E5", "=CB=CE=CC=E5"; =
HEIGHT: 20px
}
HR {
COLOR: #0772b1; size: 1; noshade:=20
}
H1 {
FONT-WEIGHT: bold; FONT-SIZE: 18px; FONT-FAMILY: "=D0=C2=CB=CE=CC=E5", =
"=CB=CE=CC=E5"
}
CODE {
FONT-FAMILY: "Arial", "Helvetica", "sans-serif"
}
A.gray:link {
COLOR: #696969; TEXT-DECORATION: none
}
A.gray:visited {
COLOR: #696969; TEXT-DECORATION: none
}
A.gray:active {
COLOR: #696969; TEXT-DECORATION: none
}
A.gray:hover {
COLOR: #ff0000; TEXT-DECORATION: underline
}
A:visited {
COLOR: #000000; TEXT-DECORATION: underline
}
A:active {
COLOR: #000000; TEXT-DECORATION: underline
}
A.small:visited {
COLOR: #000000; TEXT-DECORATION: underline
}
A:link {
TEXT-DECORATION: underline
}
A.small:link {
TEXT-DECORATION: underline
}
A:hover {
COLOR: #ff0000; TEXT-DECORATION: underline
}
A.path:link {
COLOR: #ffffff; TEXT-DECORATION: none
}
A.path:visited {
COLOR: #ffffff; TEXT-DECORATION: none
}
A.path:active {
COLOR: #ffffff; TEXT-DECORATION: none
}
A.path:hover {
COLOR: #ffee00; TEXT-DECORATION: underline
}
A.title:link {
COLOR: #0772b1; TEXT-DECORATION: none
}
A.title:visited {
COLOR: #0772b1; TEXT-DECORATION: none
}
A.title:active {
COLOR: #0772b1; TEXT-DECORATION: none
}
A.title:hover {
COLOR: #ff0000; TEXT-DECORATION: underline
}
A.uln:link {
COLOR: #ff8800; TEXT-DECORATION: none
}
A.uln:visited {
COLOR: #ff8800; TEXT-DECORATION: none
}
A.uln:active {
COLOR: #ff8800; TEXT-DECORATION: none
}
A.uln:hover {
COLOR: #ff0000; TEXT-DECORATION: underline
}
A.b2r:link {
COLOR: #ff0000; TEXT-DECORATION: underline
}
A.b2r:visited {
COLOR: #ff0000; TEXT-DECORATION: underline
}
A.b2r:active {
COLOR: #ff0000; TEXT-DECORATION: underline
}
A.b2r:hover {
COLOR: #000000; TEXT-DECORATION: underline
}
.path_br {
BORDER-RIGHT: #0772b1 2px solid; BORDER-TOP: black 1px solid; =
BORDER-LEFT: #0772b1 2px solid; BORDER-BOTTOM: black 0px solid
}
.body_br {
BORDER-RIGHT: #0772b1 2px solid; BORDER-TOP: #0772b1 0px solid; =
BORDER-LEFT: #0772b1 2px solid; BORDER-BOTTOM: #0772b1 1px solid
}
.hborder {
BORDER-RIGHT: #0772b1 2px solid; BORDER-TOP: #0772b1 0px solid; =
BORDER-LEFT: #0772b1 2px solid; BORDER-BOTTOM: #0772b1 0px solid
}
.graybr {
BORDER-RIGHT: #cccccc 1px solid; BORDER-TOP: #cccccc 1px solid; =
BORDER-LEFT: #cccccc 1px solid; BORDER-BOTTOM: #cccccc 1px solid
}
.small {
FONT-SIZE: 12px; FONT-FAMILY: "=D0=C2=CB=CE=CC=E5", "=CB=CE=CC=E5"
}
.mid {
FONT-SIZE: 14px; LINE-HEIGHT: 20px; FONT-FAMILY: "=D0=C2=CB=CE=CC=E5", =
"=CB=CE=CC=E5"
}
.big {
FONT-SIZE: 16px; COLOR: #ffffff; LINE-HEIGHT: 18pt; FONT-FAMILY: =
"=D0=C2=CB=CE=CC=E5", "=CB=CE=CC=E5"; TEXT-DECORATION: none
}
.bigblack {
FONT-WEIGHT: bold; FONT-SIZE: 18px; COLOR: #000000; LINE-HEIGHT: 18pt; =
FONT-FAMILY: "=D0=C2=CB=CE=CC=E5", "=CB=CE=CC=E5"; TEXT-DECORATION: none
}
.articletitle {
FONT-SIZE: 24px; COLOR: #0066cc; LINE-HEIGHT: 24px
}
.br-bottem {
BORDER-RIGHT: black 0px solid; BORDER-TOP: black 0px solid; =
BORDER-LEFT: black 0px solid; BORDER-BOTTOM: #336699 2px solid
}
------=_NextPart_000_0036_01C52EE7.8AF2FAF0
Content-Type: application/octet-stream
Content-Transfer-Encoding: quoted-printable
Content-Location: http://www.javajia.com/components/mainscript.js
function scroll(seed)
{
var m1 =3D "=BB=B6=D3=AD=C4=FA=B7=C3=CE=CAJava=BC=D2!, =
www.JavaJia.com , master@javajia.com"=20
var m2 =3D =
"=D5=E2=C0=EF=B5=C4=C0=B8=C4=BF=D3=D0Frontpage=BD=CC=B3=CC=A3=ACDreamweav=
er=BD=CC=B3=CC=A3=ACFlash=BD=CC=B3=CC=A3=ACJAVASCRIPT=BD=C5=B1=BE=BE=AB=DD=
=CD=A3=AC=CF=A3=CD=FB=B6=D4=C4=FA=D3=D0=CB=F9=B0=EF=D6=FA ! "
//var msg=3Dm1+m2;=20
var msg=3Dm1;
var out =3D " ";
var c =3D 1;
if (seed > 100)
{
seed--;
var cmd=3D"scroll(" + seed + ")";
timerTwo=3Dwindow.setTimeout(cmd,70);
}
else if (seed <=3D 100 && seed > 0)=20
{
for (c=3D0 ; c < seed ; c++)=20
{
out+=3D" ";
}
out+=3Dmsg;
seed--;
var cmd=3D"scroll(" + seed + ")";
window.status=3Dout;
timerTwo=3Dwindow.setTimeout(cmd,70);
} else if (seed <=3D 0)
{
if (-seed < msg.length)=20
{
out+=3Dmsg.substring(-seed,msg.length);
seed--;
var cmd=3D"scroll(" + seed + ")";
window.status=3Dout;
timerTwo=3Dwindow.setTimeout(cmd,70);
}
else=20
{
window.status=3D" ";
timerTwo=3Dwindow.setTimeout("scroll(70)",70);
}
}
}
timerONE=3Dwindow.setTimeout('scroll(70)',70);
------=_NextPart_000_0036_01C52EE7.8AF2FAF0--
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -