/* E 5kF^P
**SiteFileFetch.java ( tn<
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*/ \|+/0USn
package NetFox; >[3X]n,0
import java.io.*; uW[3G
import java.net.*; oX|?:MS:
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public class SiteFileFetch extends Thread { };SV!'9s?~
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SiteInfoBean siteInfoBean = null; //文件信息Bean "3y} F
long[] nStartPos; //开始位置 zl)&U=4l
long[] nEndPos; //结束位置 YN#XmX%
FileSplitterFetch[] fileSplitterFetch; //子线程对象 sv=^k(d3
long nFileLength; //文件长度 WN0c%kz=
boolean bFirst = true; //是否第一次取文件 ;QPy:x3
boolean bStop = false; //停止标志 f-+.;`H)T
File tmpFile; //文件下载的临时信息 )Qr6/c8}
DataOutputStream output; //输出到文件的输出流 h3 @s2 fK
p {C9`wi)
//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) _t.FL@3e
public SiteFileFetch(SiteInfoBean bean) throws IOException fOBN=y6x
{ %cj58zO|y
siteInfoBean = bean; |\{Nfm=:%
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); R+Lk~X^*l'
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); >l2w::l%
if(tmpFile.exists ()) 5P\N"Yjx'
{ _;G=G5r
bFirst = false; tp+=0k2i
read_nPos(); <IH*\q:7
} /co%:}ln
else j`9Nwa
{ BTs0o&}e
nStartPos = new long[bean.getNSplitter()]; "_)|8|gN
nEndPos = new long[bean.getNSplitter()]; #JS`e_3Rr
}
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} 9HKf^+';n
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public void run() \^s2W:c
{ ]wf|PU~nr
//获得文件长度 u:5IjOb2^
//分割文件 $3:X+X
//实例FileSplitterFetch )[
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//启动FileSplitterFetch线程 @LC~*_y
//等待子线程返回 UT;4U;a,m
try{ ~,Mr0
if(bFirst) xppkLoPK
{ %yhI;M^
nFileLength = getFileSize(); >;}]pI0T
if(nFileLength == -1) K P6PQgc
{ LaT8l?q q
System.err.println("File Length is not known!"); v>:=w|.HC
} ?%;B`2 nDR
else if(nFileLength == -2) L5C2ng>
{ w .l|G,%=
System.err.println("File is not access!"); o'^phlX
} Z"N(=B
else x_|>n<Z
{ qOgtGN}k
for(int i=0;i<nStartPos.length;i++) bQV("~#
{
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nStartPos = (long)(i*(nFileLength/nStartPos.length)); 1gk0l'.z
} X#7}c5^Y
for(int i=0;i<nEndPos.length-1;i++) PvuAg(?
{ *k[kV
nEndPos = nStartPos[i+1]; _Z.;u0Zp8
} c.-cpFk^L&
nEndPos[nEndPos.length-1] = nFileLength; .t:DvB
} bN!u}DnN
} \
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//启动子线程 #~*XDWvIS~
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; 6d};|#}
for(int i=0;i<nStartPos.length;i++) k%!VP=c4s
{ v*Xk WH5
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), uZ<%kV1B
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),
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nStartPos,nEndPos,i); -[<vYxX:h:
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); K+-z Y[3
fileSplitterFetch.start(); N+hedF@ZU
} *LEu=3lp%>
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), bkkSIl+Q
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); _y"a2M
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", p4y6R4kyT
nEndPos = " + nFileLength); ]p\u$VY9
// fileSplitterFetch[nPos.length-1].start(); 15JsmA*Q
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_ flgQ
//等待子线程结束 i<Q&
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//int count = 0; OMi02tSm
//是否结束while循环 p&QmIX]BZ
boolean breakWhile = false; W1;=J^<&1
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while(!bStop) pOX$4$VR<
{ eL_^: -
write_nPos(); Jxf}b}^T
Utility.sleep(500); %B0w~[!4}
breakWhile = true; 1O23"o5=
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for(int i=0;i<nStartPos.length;i++) &b!vWX1N
{ L2<+#O#
if(!fileSplitterFetch.bDownOver) Mc!2mE%47m
{ ),MU+*`
breakWhile = false; QYH."7X
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break; t z"5+uuu
} (;C$gnr.C
} 2c"/QT
if(breakWhile) '1Y<RD>x
break; T<XfZZ)l<`
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//count++; [#7D~Lx/
//if(count>4) f!mE1,eBEe
// siteStop(); ruzMag)
} "-28[a3q
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System.err.println("文件下载结束!"); $1b]xQ
} ]&' jP
catch(Exception e){e.printStackTrace ();} /i> ?i@O-
} %7iUlO}}V
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//获得文件长度 Z(l9>A7!
public long getFileSize() %Fs*#S
{ K?$9N}+
int nFileLength = -1; a^%8QJW
try{ i[o&z$JO
URL url = new URL(siteInfoBean.getSSiteURL()); sN"p5p
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); /4(Z`e;0
httpConnection.setRequestProperty("User-Agent","NetFox"); 'lxLnX
}!eF
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int responseCode=httpConnection.getResponseCode(); !p-'t]
if(responseCode>=400) 2;3x,<Cg
{ M\9at\$
processErrorCode(responseCode); l#tS.+B7
return -2; //-2 represent access is error ?OdV1xB
} UB5}i('L
1 d=0q?nH
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String sHeader; {bW"~_6}
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for(int i=1;;i++) 7ytm.lU
{ .L~f Fns/
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ());
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//Utility.log(in.readLine()); O)Xd3w'
sHeader=httpConnection.getHeaderFieldKey(i); k,a,h^{}j
if(sHeader!=null) Lr K9F^c
{ "1_{c *ck
if(sHeader.equals("Content-Length")) yW%&_s0
{ >oVc5}
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); czXI?]gg,
break; <+ -V5O^
} 7^n,Tig
} &*X3ch
else (PRaiE
break; z\X60T
} H?rSP0.
} cZPbD;e:
catch(IOException e){e.printStackTrace ();} cjCE3V9X
catch(Exception e){e.printStackTrace ();} zG&WWc`K
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Utility.log(nFileLength); bv .EM
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return nFileLength; ;:v]NZtc
} Q,[rrG;?@
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#N<s^KYG-
//保存下载信息(文件指针位置) }T?i%l
private void write_nPos() >:3xi{
{ e-nWD
try{ (2\l i{$e
output = new DataOutputStream(new FileOutputStream(tmpFile)); `=_7I?
output.writeInt(nStartPos.length); 0L3Bo3:k
for(int i=0;i<nStartPos.length;i++) gubb .EY
{ =YS!soO
// output.writeLong(nPos); ]hCWe0F
output.writeLong(fileSplitterFetch.nStartPos);
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output.writeLong(fileSplitterFetch.nEndPos); D<+ bzC
} E#yCcC!wMY
output.close(); [X0k{FR
} uYG #c(lc
catch(IOException e){e.printStackTrace ();} )_Z]=5Ds
catch(Exception e){e.printStackTrace ();} BsoFQw4$9
} Y2RxD\!Z
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//读取保存的下载信息(文件指针位置) 9'L1KQ
private void read_nPos() ^N*pIVLC
{ |HKHN?)
try{ 8cYuzt]..
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); z6GL,wo#
int nCount = input.readInt(); ~$ cm9>
nStartPos = new long[nCount]; C=xo&I7
nEndPos = new long[nCount]; A"P\4
for(int i=0;i<nStartPos.length;i++) 842Mydom
{ E9~&f^f
nStartPos = input.readLong(); ; Xnk+
nEndPos = input.readLong(); f ~n' Ki+'
} RW|UQY#
input.close(); Yke<Wy1
} {[(W4NAlH
catch(IOException e){e.printStackTrace ();} \t&n
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catch(Exception e){e.printStackTrace ();} r9p?@P\:[
} -o!saX<
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private void processErrorCode(int nErrorCode) \?5[RR
{ *g/I&'^
System.err.println("Error Code : " + nErrorCode); ND)M3qp2(
} YyX^lL_
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//停止文件下载 Rx_,J%0Fq
public void siteStop() rm7*l<v6
{ 'tq\<y
bStop = true; M8^ziZY
for(int i=0;i<nStartPos.length;i++) )[^:]}%r
fileSplitterFetch.splitterStop(); ThT.iD[
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} #=)?s
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} P~b%;*m}8
//负责部分文件的抓取 vl#V-UW$4P
**FileSplitterFetch.java DbPBgD>Q
*/ r&j+; JM5
package NetFox;
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import java.io.*; 0*]<RM
import java.net.*; qZyt>SAx
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public class FileSplitterFetch extends Thread { IAt+S-q0
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String sURL; //File URL T^f&58{ 7
long nStartPos; //File Snippet Start Position ] BP^.N=
long nEndPos; //File Snippet End Position !Cv<>_N).
int nThreadID; //Thread's ID [8om9 Z3
boolean bDownOver = false; //Downing is over BhhK| U/
boolean bStop = false; //Stop identical ;r2b@x:<_
FileAccessI fileAccessI = null; //File Access interface CM@"lV_
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException i >/@]2
{ st1M.}
this.sURL = sURL; r(/P||`l
this.nStartPos = nStart; $7k04e@]
this.nEndPos = nEnd; QVA!z##
nThreadID = id;
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fileAccessI = new FileAccessI(sName,nStartPos);//定位 }!J/ 9WKgU
} .,iw2:
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public void run() PHB\)/
{ )Sh;UW
while(nStartPos < nEndPos && !bStop) Qg8eq_m(
{ U%SNROj
O.m.]%URW
0 ^-b}
try{ iaq:5||,
URL url = new URL(sURL); ES:p^/ =*
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); *^&iw$Qx3
httpConnection.setRequestProperty("User-Agent","NetFox"); Q=9VuTE
String sProperty = "bytes="+nStartPos+"-";
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httpConnection.setRequestProperty("RANGE",sProperty); n
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Utility.log(sProperty); ;tIIEc
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InputStream input = httpConnection.getInputStream(); E`Zh\u)
//logResponseHead(httpConnection); )="g?E3
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byte[] b = new byte[1024]; }e;p8)]Wl
int nRead; 9"l%tq_
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 9ixnf=$Jp
{ Zq6ebj
nStartPos += fileAccessI.write(b,0,nRead); @rDv
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//if(nThreadID == 1) {UjIxV(J
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); N'1 [t
} ,hcBiL/
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Utility.log("Thread " + nThreadID + " is over!"); kv`3Y0R-"
bDownOver = true; R|^t~h-
//nPos = fileAccessI.write (b,0,nRead); VE+p&0
} xdSj+507
catch(Exception e){e.printStackTrace ();} iOA3x 8J
} v+,
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} {gq:sj>
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//打印回应的头信息 vN[m5)aT
public void logResponseHead(HttpURLConnection con) @x\gk5
{ (4/`@;[
for(int i=1;;i++) P24
{ [+5SEr}
String header=con.getHeaderFieldKey(i); k@X
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if(header!=null) [O =)FiY-
//responseHeaders.put(header,httpConnection.getHeaderField(header)); "q#g/T
Utility.log(header+" : "+con.getHeaderField(header)); yyYbB ]D
else s</ktPtu
break; iS^^Z ZyR
} dYttse'
} 1 bx^Pt)
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public void splitterStop() PfMOc+ q
{ NhaeAD
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bStop = true; % w/1Uo24
} r:b.>5CS)
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} E?W!.hbA
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/* LHGK!zI
**FileAccess.java XwqfWd_
*//文件访问(定位,写) (%^TTe
package NetFox; !N2 n@bo
import java.io.*; <Ucfd
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public class FileAccessI implements Serializable{ ;Z0cD*Jb
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//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 +=F);;!
RandomAccessFile oSavedFile; oA^
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long nPos; JL+[1=uE1L
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public FileAccessI() throws IOException 5+PBS)pJ]%
{ /VOST^z!
this("",0); RAJ|#I1
} Kwmo)|7uPU
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public FileAccessI(String sName,long nPos) throws IOException sjbC~Te--
{ eT
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oSavedFile = new RandomAccessFile(sName,"rw"); olW`.3f
this.nPos = nPos; #hiDZ>nr
oSavedFile.seek(nPos); %y~]3XWik
} h.0&)t\q"
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public synchronized int write(byte[] b,int nStart,int nLen) &Fr68HNmj
{ fXR_)d
int n = -1; )=y6s^}
try{ |Szr=[
oSavedFile.write(b,nStart,nLen); \d8=*Zpz7
n = nLen;
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} $XzlW=3y
catch(IOException e) Qpu2RfP
{ {@`Uf;hPAX
e.printStackTrace (); (4gQe6tA
} :re(khZq#
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return n; eyp\h8!u_
} @Pg@ltUd
#8HXR3L5=!
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} Or~6t}f
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/* b-gVRf#F
**SiteInfoBean.java Ol^EQLO
*/ fu;B ?mIn
package NetFox; -s84/E4Y*
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public class SiteInfoBean { vWga>IGM
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private String sSiteURL; //Site's URL Z1}zf(JU
private String sFilePath; //Saved File's Path ooxzM `
private String sFileName; //Saved File's Name _^A
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private int nSplitter; //Count of Splited Downloading File _Pm}]Y:_
`^Sq>R!;
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public SiteInfoBean() meWq9:z
{//nSplitter的缺省值为5 dQ"W~ig
//default value of nSplitter is 5 QAw,X Z.K^
this("","","",5); lt"*y.%@b
} [l{eJ/W
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) c3BL2>c
{ NGzqiu"J
sSiteURL= sURL; {iteC
sFilePath = sPath; 1Ac1CsK*
sFileName = sName; g0$k_
this.nSplitter = nSpiltter; f@g
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} CR=MjmH
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public String getSSiteURL() +5\\wGo<
{ ,_-*/- 7;8
return sSiteURL; d8I:F9
} ]jrxrUl
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public void setSSiteURL(String value) .`RC,R`C
{ %05a>Rf&
sSiteURL = value; _L.yt5_
} v%Xe)D
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public String getSFilePath() e@By@r&nql
{ % j; cXN
return sFilePath; G-<~I#k
} aC`
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public void setSFilePath(String value) C_)>VPD
{ iB-s*b<`~
sFilePath = value; K>eG5tt
} 1=.?KAXR
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public String getSFileName() ?8/h3xV;
{ _\[G7
return sFileName; ,oil}N(
} /L^dHI]Q
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public void setSFileName(String value) dG+xr!
{ *@^0xz{\z
sFileName = value; zBfBYhS-
} [t'"4
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//|Vj | =
public int getNSplitter() Hq$|j,&?
{ 2T9Z{v
return nSplitter; vS#]RW&j
} :P~Owz
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public void setNSplitter(int nCount) >d\I*"C+d
{ kvn6
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nSplitter = nCount; 470Pig>I8
} <i-RF-*S
} sn%fE
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/* wxxC&!
**Utility.java WTx;,TNG
*/ L8Q!6oO=<
package NetFox; Y`uCDfcQ
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public class Utility { 3}+
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public Utility() 1wt]J!hgV
{ X*Zv,Wm
$)!Z"2T
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} =B1!em|
;Lu|fQ#u*
//线程睡眠 \BW(c)Q
public static void sleep(int nSecond) QR4o j
{ M;R>]wP"V
try{ Tx_LH"8
Thread.sleep(nSecond); 7Z_iQ1
} )SuJK.IF
catch(Exception e) 3]acfCacC
{ VbjW$?
e.printStackTrace (); p
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} .anL}OA_q
} uHYI :(O
q`hg@uwA{`
//日志 wlJ1,)n^2
public static void log(String sMsg) #A!0KN;GC2
{ cf9y0
System.err.println(sMsg); {;U:0BPI3
} Nsq%b?#
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public static void log(int sMsg) ^&By