/* kH
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**SiteFileFetch.java Gz,i~XX
*/ {?:X8&Sf
package NetFox; Hl{S]]z
import java.io.*; iT2B'QI=<
import java.net.*; J4fi'
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public class SiteFileFetch extends Thread { o!kbK#k
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SiteInfoBean siteInfoBean = null; //文件信息Bean n[lJLm^(_C
long[] nStartPos; //开始位置 ^\4h<M
long[] nEndPos; //结束位置 {y=j?lD
FileSplitterFetch[] fileSplitterFetch; //子线程对象 iO|se:LY<
long nFileLength; //文件长度 iOW#>66d
boolean bFirst = true; //是否第一次取文件 Ab{ K<:l
boolean bStop = false; //停止标志 9_Be0xgJ3^
File tmpFile; //文件下载的临时信息 2AT5
DataOutputStream output; //输出到文件的输出流 < t,zaIi
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) @~^5l
public SiteFileFetch(SiteInfoBean bean) throws IOException J IUx
{ j+$rj
siteInfoBean = bean; ]:XoRyIZ1[
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); (|klSz_4LM
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 9\_eK,*B
if(tmpFile.exists ()) ;$.J3!
{ '>-gi}z7
bFirst = false; m
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read_nPos(); nn@-W]
} =8AO:
else K,+LG7ec
{ ~*z% e*EL
nStartPos = new long[bean.getNSplitter()]; RtTJ5@V(
nEndPos = new long[bean.getNSplitter()]; ME46V6[LX]
} =P't(<
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} 1w@(5 ^V
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public void run() &Sw%<N*r
{ u0|8Tgf
//获得文件长度 IzikDc10
//分割文件 )dbB=OZ
//实例FileSplitterFetch ;oW6 NJ
//启动FileSplitterFetch线程
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//等待子线程返回 >3_jWFq
try{ [ 9 {*94M
if(bFirst) $rv8K j+
{ [uC]*G]
nFileLength = getFileSize(); I&}L*Z?`
if(nFileLength == -1) e!N:,`R
5
{ ]zE;Tw.S
System.err.println("File Length is not known!"); [^Os kJ4
} x@P y>f2
else if(nFileLength == -2) $PTP/^
{ :61Tun
System.err.println("File is not access!"); EMwS1~3dD
} 3er nTD*`
else $HHs ^tW
{ :W!7mna
for(int i=0;i<nStartPos.length;i++) ]m
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{ _}lZ,L(w
nStartPos = (long)(i*(nFileLength/nStartPos.length)); qE&v ;
} ]
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for(int i=0;i<nEndPos.length-1;i++) BLfTsNzmt
{ 0^I|ut4
nEndPos = nStartPos[i+1]; C7lH]`W|/
} i2E)P x
nEndPos[nEndPos.length-1] = nFileLength; ehzM)uK
} "c3Grfoz
} ]R h#g5X
|=Eo?Q_
i
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//启动子线程 7Ri46Tkt
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; Xe6w|
for(int i=0;i<nStartPos.length;i++) ~
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{ 1O/+8yw
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), R;s?$;I
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), &]"
nStartPos,nEndPos,i); ")O%86_Q:
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); [Y|8\Ph`&
fileSplitterFetch.start(); %HGD;_bhI
} (D#B_`;-
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Oft-w)cYz,
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); -I*^-+>H
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", Y2a5bc P
nEndPos = " + nFileLength); zKw`Md
// fileSplitterFetch[nPos.length-1].start(); qaiNz S@q
&+Z,hs9%
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//等待子线程结束 ?5C!<3gM)
//int count = 0; LPZF)@|`
//是否结束while循环 *7CV^mDm
boolean breakWhile = false; :[wsKFaV+
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while(!bStop) ]NUl9t*N4
{ /1"(cQ%?
write_nPos(); {G U&a
Utility.sleep(500); |jI#"LbF
breakWhile = true; 3LAIl913
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for(int i=0;i<nStartPos.length;i++) vI:;A/&
{ jr)1(**
if(!fileSplitterFetch.bDownOver) 3.|S
{ .<jr0,i
breakWhile = false; YPU*@l>
break; }#L^! \V}
} *@Lp`thq
} iP
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if(breakWhile) d74d/l1*{
break; 8$")%_1]
9!6f-K
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//count++; zz+$=(T:M
//if(count>4) QqFR\6
// siteStop(); 0"kbrv2y
} XRcq hv
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System.err.println("文件下载结束!"); oC<.=2]
} g<l1zo`_
catch(Exception e){e.printStackTrace ();} f$+,HB
} 9{RB{<Se!
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//获得文件长度 J2::'Hw*s
public long getFileSize() v4u5yy_;(
{ NG--6\
int nFileLength = -1; 2;zb\d
try{ hlV=qfc
URL url = new URL(siteInfoBean.getSSiteURL()); igkYX!0#8O
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); Wi*.TWz3
httpConnection.setRequestProperty("User-Agent","NetFox"); Gr7=:+0n|P
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int responseCode=httpConnection.getResponseCode(); cv?06x{
if(responseCode>=400) q1z"-~i)E
{ ZIf
processErrorCode(responseCode); 4 8:>NW
return -2; //-2 represent access is error wLi4G@jJ
} 3 jGWkby0
@LS@cCC,a
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String sHeader; kW*f.!
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for(int i=1;;i++) v'U{/ ,x
{ y`\@N"Cf
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); fa++MNf}3
//Utility.log(in.readLine()); :Pvzl1
sHeader=httpConnection.getHeaderFieldKey(i); gYNjzew'
if(sHeader!=null) ]Y%Vio
{ 9`1O"R/
if(sHeader.equals("Content-Length")) ey2S#%DF]
{ $CY~5A `l9
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 6N",-c
break; 43|XSyS
} 8D>n1b(H
} j"}*T
else u])b,9&En
break; W~zbm]
} v9:9E|,U+
} le1}0L
catch(IOException e){e.printStackTrace ();} 2[Z,J%:0
catch(Exception e){e.printStackTrace ();} N!ls j
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Utility.log(nFileLength); VXYK?Qc'
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return nFileLength; U@HK+C"M|
} v16JgycM
n2]/v{E;/
3
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//保存下载信息(文件指针位置) <QA6/Ef7
private void write_nPos() b:Wm8pp?
{ xCg52zkH#
try{ 2^y^q2(r
output = new DataOutputStream(new FileOutputStream(tmpFile)); <}E!w_yi
output.writeInt(nStartPos.length); pnjXf.g"O
for(int i=0;i<nStartPos.length;i++) 4(|cG7>9-
{ ba[1wFmcL
// output.writeLong(nPos); 5MN8D COF
output.writeLong(fileSplitterFetch.nStartPos); +?:7O=Y
output.writeLong(fileSplitterFetch.nEndPos); I,0q4
} JBi*P.79^
output.close(); J&M
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} 7[> 6i
catch(IOException e){e.printStackTrace ();} F ~^Jmp7Y
catch(Exception e){e.printStackTrace ();} 1`(tf6op
} PK{acen
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//读取保存的下载信息(文件指针位置) \MbB#
private void read_nPos() eM$s v9?
{ >+JqA7K
try{ ?\t#1"d
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); }q $5ig
int nCount = input.readInt(); eO?p*"p" F
nStartPos = new long[nCount]; oXb;w@:
nEndPos = new long[nCount]; N>XS=2tzN
for(int i=0;i<nStartPos.length;i++) $})g?Q
{ P!H_1RwXKC
nStartPos = input.readLong(); *1v[kWa?
nEndPos = input.readLong(); Y"~gw~7OD
} ^lA=* jY(
input.close(); ~F4fFQ-yy
} E~]R2!9
catch(IOException e){e.printStackTrace ();} qAn! Rk A
catch(Exception e){e.printStackTrace ();} pi
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} OW3sS+y
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private void processErrorCode(int nErrorCode) te3}d'9&|
{ .!f$
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System.err.println("Error Code : " + nErrorCode); (-ufBYO6
} MUTj-1 H6)
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//停止文件下载 yzerOL
public void siteStop() *M:B\D
{ <kGU,@6PF
bStop = true; 3QG7C{
for(int i=0;i<nStartPos.length;i++) K_RjX>q%N
fileSplitterFetch.splitterStop(); +89*)pk
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} _H j!2 '
} QR%mj*@Wle
//负责部分文件的抓取 2w["aVr
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**FileSplitterFetch.java \.-}adKg
*/ Nv(9N-9r
package NetFox; -I&m:A$4*
)%`^xR
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import java.io.*; l|kSsP:GO
import java.net.*; FFu9&8Y
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public class FileSplitterFetch extends Thread { nEJY5Bz$
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String sURL; //File URL BW 4%l
long nStartPos; //File Snippet Start Position a-=8xs'
long nEndPos; //File Snippet End Position ^pQCNKLBY
int nThreadID; //Thread's ID @\f^0^G
boolean bDownOver = false; //Downing is over S/9DtXQ
boolean bStop = false; //Stop identical {]%0lf:
FileAccessI fileAccessI = null; //File Access interface \l9qt5rS
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException I@yCTluV$
{ K
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this.sURL = sURL; !bN*\c
this.nStartPos = nStart; X*{2[+<o
this.nEndPos = nEnd; _$
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nThreadID = id; VXR>]HUF
fileAccessI = new FileAccessI(sName,nStartPos);//定位 "#{4d),r
} CF?1R
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public void run() j)<IRD^
{ 6YGubH7%_
while(nStartPos < nEndPos && !bStop) 6]W=nAD
{ BYVY)<v/
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try{ ^eo|P~w
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URL url = new URL(sURL); P:k>aHnW
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ?zw|kl
httpConnection.setRequestProperty("User-Agent","NetFox"); C|}iCB
String sProperty = "bytes="+nStartPos+"-"; -"=U?>(
httpConnection.setRequestProperty("RANGE",sProperty); '}B+r@YCN
Utility.log(sProperty); Q9Kve3u-i
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InputStream input = httpConnection.getInputStream(); @ycDCB(D}
//logResponseHead(httpConnection); ??M"6k
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8 ~J(](QA
byte[] b = new byte[1024]; @zU6t|mhz
int nRead; .J)I | '
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) 6W]9$n\"?
{ M%2+y5
nStartPos += fileAccessI.write(b,0,nRead); i36eBjT
//if(nThreadID == 1) B0dQ@Hq*
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); a&c6.#E{y
} +l9!Fl{MK\
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Utility.log("Thread " + nThreadID + " is over!"); 4^WpS/#4
bDownOver = true; E\as@pqo\p
//nPos = fileAccessI.write (b,0,nRead); YjxF}VI~<
} 3%E }JU?MM
catch(Exception e){e.printStackTrace ();} +a^nlW9g
} }o(zj=7
} MvK !u
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//打印回应的头信息 bpH^:fyLU`
public void logResponseHead(HttpURLConnection con) 62k^KO6Y
{ x4;"!Kq\
for(int i=1;;i++) ?[g=F <r
{ "Zl5<
String header=con.getHeaderFieldKey(i); fI{&#~f4C
if(header!=null) 5,_u/5Y4
//responseHeaders.put(header,httpConnection.getHeaderField(header)); IsZHelg
Utility.log(header+" : "+con.getHeaderField(header)); . 1KhBgy^K
else d1AioQ9
break; iOU6V
} YwDbPX
} lQ" p !
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public void splitterStop() (tIo:j
{ i;/5Y'KZ
bStop = true; xJ>fm%{5
} OBOtu u.
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9 7GV2]-M
} YG3J$_?y0
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/* o4m\~as)Y
**FileAccess.java k5:G-BQ:
*//文件访问(定位,写) H*ow\
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package NetFox; 'p>Ra/4
import java.io.*; mZSD(
sf)EMh3Z
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public class FileAccessI implements Serializable{ NidIVbT.A
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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 `|{-+m
RandomAccessFile oSavedFile; oW ::hB
long nPos; s5CXwM6cx
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public FileAccessI() throws IOException U>]$a71
{ _I@9HC 4
this("",0); Fv~20G(O
} YC++&Nk
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public FileAccessI(String sName,long nPos) throws IOException &,zq%;-f
{ kD=WO4}
oSavedFile = new RandomAccessFile(sName,"rw"); ,{M^-3C
this.nPos = nPos; )'l:K.F
oSavedFile.seek(nPos); KN<S}3MN
} /N =b\-]
6 :b!F
&e @2
public synchronized int write(byte[] b,int nStart,int nLen) TE3lK(f
{ d,+Hd2o^X
int n = -1; B2>H_dmQ
try{ &e E=<x
oSavedFile.write(b,nStart,nLen); ]V^iN=(_5
n = nLen; Xe$ I7iKD
} RRmz"j>
catch(IOException e) ULs\+U
{ rDm~h~u5
e.printStackTrace (); 1oR7iD^
} Zq+v6fk_Mn
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return n; ZP@
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} >0/i[k-dk
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)
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} (SpX w,:
+"rDT1^V
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/* nV"~-On
**SiteInfoBean.java BmbyH{4
*/ t<#TJ>Le
package NetFox; th
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public class SiteInfoBean { xN5)
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private String sSiteURL; //Site's URL .YhA@8nc~l
private String sFilePath; //Saved File's Path BF\XEm?!
private String sFileName; //Saved File's Name )(bW#-
private int nSplitter; //Count of Splited Downloading File h;p>o75O
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public SiteInfoBean() 4w*Skl=F}
{//nSplitter的缺省值为5 %RTBV9LIXr
//default value of nSplitter is 5 <^&ehy:7y
this("","","",5); z06r6
} 7I&&bWB
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) CS2Bo
{ ( /=f6^}
sSiteURL= sURL; EAT"pxP
sFilePath = sPath; N-G1h?e4
sFileName = sName; fT;s-v[`k
this.nSplitter = nSpiltter; joFm]3$;
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} 1Ir21un
k
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public String getSSiteURL() F0GxH?
{ (l\1n;s*B
return sSiteURL; !\-{D$E?H
} {x|[p_?
8m-U){r!U^
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public void setSSiteURL(String value) t)~"4]{*}D
{ d(\%Os
sSiteURL = value; sZjQ3*<-r
} G? ])o5
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o)h_H;
public String getSFilePath() QX!-B
{ m,VOx7%n
return sFilePath; =i$Fl{vH
} X$HIVxyq2
( Z619w
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public void setSFilePath(String value) C].iCxn
{ Q8T]\6)m
sFilePath = value; 1#C4;3i,
} b,5~b&<h
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public String getSFileName() YJ^]
u}
{ bn#"?6Z2
return sFileName; zZ7;jyD
} b+%f+zz*h
*F+KqZ.2
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public void setSFileName(String value) uW=k K0E
{ Tl%`P_J)-S
sFileName = value; EMh7z7}Rr
} 4QH3fTv
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public int getNSplitter() .7Dtm<K#
{ lsJSYJG&
return nSplitter; LzG%Z1`
} A0/"&Ag]
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public void setNSplitter(int nCount) rx'RSo#1O
{ !`k1:@NZ
nSplitter = nCount; _Us#\+]_:
} O@tU.5*$5
} lsgh#x
],>@";9u"
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/* q['Euy
**Utility.java J28M@cn
*/ SOs:]U-T3
package NetFox; SbND
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!F*5M1Kjd
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public class Utility { $3W;=Id=+
ls_'')yp
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public Utility() X@'uy<tI-
{ (lXGmx8
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} Mz9r5
g$":D
//线程睡眠 #9B)Xx!g
public static void sleep(int nSecond) J; 3{3
{ O%Scjm-^X
try{ k|v3.< -
Thread.sleep(nSecond); p?{Xu4(
} ED2a}Tt>Z
catch(Exception e) h2)yq:87
{ zE336
e.printStackTrace (); hP=WFD&
} 1[mXd
} xj<Rp|7&
Um}
//日志 OPetj.C/a
public static void log(String sMsg) S$f9m
{ ~De"?
System.err.println(sMsg); +s"hqm
} ,QOG!T4
+cD<:"L'g
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public static void log(int sMsg) :<ka3<0%
{ <vnHz?71c
System.err.println(sMsg); b1?#81
} teOe#*
} }wWKFX
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\n" {qfn`r
/* j>*S5y.{
**TestMethod.java 3RiWZN
*/ iMt:9|yF}8
package NetFox; pe0F0Ruy
v&Ii^?CvO
f&