/* AA &>6JB{
**SiteFileFetch.java |x+g5~$
*/ L}Rsg'U
package NetFox; {Lg]chJq?
import java.io.*; x"83[0ib
import java.net.*;
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public class SiteFileFetch extends Thread { B }t529Z
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SiteInfoBean siteInfoBean = null; //文件信息Bean X"EZpJ'W
long[] nStartPos; //开始位置 IY40d^x
long[] nEndPos; //结束位置 ~m6b6Aj@6
FileSplitterFetch[] fileSplitterFetch; //子线程对象 ttd
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long nFileLength; //文件长度 aESlbH
boolean bFirst = true; //是否第一次取文件 2kkqPBc_
boolean bStop = false; //停止标志 FnWN]9
File tmpFile; //文件下载的临时信息 M;j)F
DataOutputStream output; //输出到文件的输出流 ]rS:#LK
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) $,
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public SiteFileFetch(SiteInfoBean bean) throws IOException e.Gjp{
{ (8td0zq
siteInfoBean = bean; 9NC?J@&B
//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); <X"_S'O
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); 4d63+iM+}
if(tmpFile.exists ()) ]9lR:V
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{ H#:Aby-d}
bFirst = false; e pGC
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read_nPos(); IcJQC
} =OamN7V=
else ZE:!>VXa87
{ QruclNW{Bv
nStartPos = new long[bean.getNSplitter()]; ?^gq
nEndPos = new long[bean.getNSplitter()]; >!3r7LgK
} ;)23@6{R%
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} wBI>H
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public void run() .r~M7 I
{ k@|Go)~
//获得文件长度 ESmWK;7b
//分割文件 KXT9Wt=
//实例FileSplitterFetch
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//启动FileSplitterFetch线程 C17$qdV/
//等待子线程返回 4vJg"*?
try{ C+%6N@
if(bFirst) PrhGp
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{ _^@ >I8ix
nFileLength = getFileSize(); ["WWaCcx
if(nFileLength == -1) LhCwZ1
{ o0 |T<_
System.err.println("File Length is not known!"); tLzb*U8'1w
} E RjMe'q4
else if(nFileLength == -2) k"F \4M
{ 2#Du5d
System.err.println("File is not access!"); S0w:R:q}L
} !:3X{)4
else V.}3d,Em%]
{ YB]{gm2
for(int i=0;i<nStartPos.length;i++) S+bpWA
{ c&'5r OY~
nStartPos = (long)(i*(nFileLength/nStartPos.length)); [w{x+6uX'
} #+8G`
for(int i=0;i<nEndPos.length-1;i++) i\dd
{ ']U<R=5T$
nEndPos = nStartPos[i+1]; yrG=2{I
} V/]o':
nEndPos[nEndPos.length-1] = nFileLength; &3f^]n!@
} .&2~gA
} g4^3H3Pd
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//启动子线程 uc
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fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; B &e'n<
for(int i=0;i<nStartPos.length;i++) *~kHH
{ |f3 :9(p
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), c Rv#aV
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), 7;9 Jn
nStartPos,nEndPos,i); |3G;Rh9w,
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); vg8Yc
fileSplitterFetch.start(); }"M5"?
} k]rc -c-
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), [Om,Q<
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); a5?Yh<cJ
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", a=
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nEndPos = " + nFileLength); nL+y"O
// fileSplitterFetch[nPos.length-1].start(); 6z2%/P-'
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//等待子线程结束 :6J&%n
//int count = 0; R(f6uO!m
//是否结束while循环 Ch_eK^ g1
boolean breakWhile = false; RMHJI6?LB
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while(!bStop) LZDJ\"a-
{ Y)2#\ F
write_nPos(); (qzBy \\p
Utility.sleep(500); '7
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breakWhile = true; 2
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for(int i=0;i<nStartPos.length;i++) ;_#<a*f
{ M9~6ry-_
if(!fileSplitterFetch.bDownOver) 1s.>_
{ (0["|h32,
breakWhile = false; JHa\"h
break; :,V&P_
} Jwpc8MQ
} %+oqAYm+s
if(breakWhile) fR]KXfZ
break; KNjU!Z/4
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//count++; 9XhcA
//if(count>4) 3_"tds <L
// siteStop(); o,RiAtdk
} w+$~ds
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System.err.println("文件下载结束!"); 1#9PE(!2
} S$
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catch(Exception e){e.printStackTrace ();} <m~{60{
} zKT4j1h
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//获得文件长度 CA5T3J@vAQ
public long getFileSize() v.hQ9#:
{ $HCgawQ
int nFileLength = -1; (4|R}jv
try{ \h?6/@3ob
URL url = new URL(siteInfoBean.getSSiteURL()); @VQ<X4Za
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); l{*Ko~g
httpConnection.setRequestProperty("User-Agent","NetFox"); _*Ej3=u
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int responseCode=httpConnection.getResponseCode(); *fz#B/_o
if(responseCode>=400) 10xza=a
{ a(LtiO
processErrorCode(responseCode); FKUo^F?z
return -2; //-2 represent access is error BjGfUQ
} q:=jv6T#
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String sHeader; Q%524%f$
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for(int i=1;;i++) @^/aS;B$>
{ ^7yaMB!
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); hkdF
//Utility.log(in.readLine()); FY`t7_Y?GV
sHeader=httpConnection.getHeaderFieldKey(i); $%4<q0-
if(sHeader!=null) Cbpz Yv32
{ Qq'e#nI@
if(sHeader.equals("Content-Length")) GWLdz0`2_
{ =~5N/!
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); 5H1N]v+
break; _l+C0lQl=
} tEt46]{
} w OOu/Y
else P-<1vfThH
break;
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} Ow(aRWUZD_
} =zu;npM
catch(IOException e){e.printStackTrace ();} C_JO:$\rE
catch(Exception e){e.printStackTrace ();} Kv)}
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Utility.log(nFileLength); {rK]Q! yj
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return nFileLength; T+B8SZw#}!
} q|0l>DPRp
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//保存下载信息(文件指针位置) 5=I"bnIU
private void write_nPos() 62MQ+H
{ wqT9m*VK
try{ \hn$-'=4
output = new DataOutputStream(new FileOutputStream(tmpFile)); 78r0K 5=
output.writeInt(nStartPos.length); Xvoz4'Gme
for(int i=0;i<nStartPos.length;i++) 1Wiz0X/
{ wS+!>Q_]w
// output.writeLong(nPos); kKjcW` [
output.writeLong(fileSplitterFetch.nStartPos); iSUu3Yv,_m
output.writeLong(fileSplitterFetch.nEndPos); UWhJkJsX
} 'IT]VRObP
output.close(); ~ch%mI~
} ,fqM>Q
catch(IOException e){e.printStackTrace ();} &=kb>*
catch(Exception e){e.printStackTrace ();} }"SqB{5e(
} wX_~H*m?
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//读取保存的下载信息(文件指针位置) GgnR*DVP$
private void read_nPos() C| 2|OTtQ
{ &,=FPlTC=
try{ e6bh,BwgQq
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); BoST?"&}'
int nCount = input.readInt(); W-gu*iZ6&
nStartPos = new long[nCount]; DycXJ3eQ
nEndPos = new long[nCount]; HVhP |+
for(int i=0;i<nStartPos.length;i++) ?>iUz.];t
{ /h{Rf,H
nStartPos = input.readLong(); wOCAGEg
nEndPos = input.readLong(); gFrNk
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} z+{+Q9j
input.close(); }/h&`0z`
} BvH?d]%
catch(IOException e){e.printStackTrace ();} 8e^u KYR<
catch(Exception e){e.printStackTrace ();} k<MQ
} 7S^G]g!x
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private void processErrorCode(int nErrorCode) 0 q1x+
{ ,,+4d :8$
System.err.println("Error Code : " + nErrorCode); 8ICV"8(
} 6GPI
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//停止文件下载 0xO*8aKT
public void siteStop() nm& pn*1
{ MB $aN':
bStop = true; <VQ)}HW;k
for(int i=0;i<nStartPos.length;i++) 1r_V$o$
fileSplitterFetch.splitterStop(); -%gEND-AP
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} A0U9,M
} 2ZEGE+0
//负责部分文件的抓取 erbk(
**FileSplitterFetch.java \G7F/$g
*/ =6O*AJ
package NetFox; -ucgET`
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import java.io.*; -u4")V>
import java.net.*; +4Pes
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public class FileSplitterFetch extends Thread { EpyMc+.Ze'
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String sURL; //File URL KX7fgC
long nStartPos; //File Snippet Start Position B2P@9u|9
long nEndPos; //File Snippet End Position Hk@Gkx_
int nThreadID; //Thread's ID K1BBCe
boolean bDownOver = false; //Downing is over 5%e+@X;j
boolean bStop = false; //Stop identical Gyy4zK
FileAccessI fileAccessI = null; //File Access interface k4hk*
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException Ox&G
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{ D>@NYqMF
this.sURL = sURL; 5oSp/M
this.nStartPos = nStart; :$,MAQ'9
this.nEndPos = nEnd; o|xZ?#^h
nThreadID = id; dFDf/tH
fileAccessI = new FileAccessI(sName,nStartPos);//定位 VN`fZ5*d~
} rQ_@q_B.
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public void run() X<Z(,B
{ 3X1 1Gl
while(nStartPos < nEndPos && !bStop) R3l{.{3p2
{ zxCx2.7
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try{ ZV+tHgzlv5
URL url = new URL(sURL);
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HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); ~IjID
httpConnection.setRequestProperty("User-Agent","NetFox"); `&7tADFB
String sProperty = "bytes="+nStartPos+"-"; -fmJkI
httpConnection.setRequestProperty("RANGE",sProperty); 7>BfHb
Utility.log(sProperty); w4Df?)Z
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InputStream input = httpConnection.getInputStream(); la_c:#ho
//logResponseHead(httpConnection); C !Srv7
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byte[] b = new byte[1024]; megTp
int nRead; AH5;6Q
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) htR.p7&Tn
{ p/VVb%
nStartPos += fileAccessI.write(b,0,nRead); u;-fG9xs
//if(nThreadID == 1) xlu4
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); n+hL/aQ+
} 0V(}Zj>
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Utility.log("Thread " + nThreadID + " is over!"); 2~?E'
bDownOver = true; ~"#HHaBO#
//nPos = fileAccessI.write (b,0,nRead); L*[3rqER
} Yg3nT:K_Y&
catch(Exception e){e.printStackTrace ();} W_JO~P
} y^`JWs,
} Y.]$T8
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//打印回应的头信息 ?\, ^>4x?
public void logResponseHead(HttpURLConnection con) -[
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{ BDWbWA
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for(int i=1;;i++) 'u;O2$
{ _3yG<'f[Y
String header=con.getHeaderFieldKey(i); Z9+fTT
if(header!=null) H4AT>}ri
//responseHeaders.put(header,httpConnection.getHeaderField(header)); tLa%8@;'$
Utility.log(header+" : "+con.getHeaderField(header)); |oXd4
else ZDbe]9#Xh
break; z_fjmqa?
} -HQbvXAS
} {DQ%fneN4
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public void splitterStop() [%N?D#;
{ &tAYF_}
bStop = true; -R:_o1"
} cS9jGD92
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} .Lna\Bv
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/* @|vH5Pi
**FileAccess.java }\?9Prsd
*//文件访问(定位,写) -;L'Jb>s76
package NetFox; , i5 _4
import java.io.*; WJnGF3G>
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public class FileAccessI implements Serializable{ c Pf_B=
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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 A,c XN1V
RandomAccessFile oSavedFile; qGV_oa74
long nPos; V>`ANZ4
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public FileAccessI() throws IOException lt&(S)
{ SULFAf<
this("",0); daI_@k Y"
} Z%qtAPd
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public FileAccessI(String sName,long nPos) throws IOException
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{ \}?X5X>
oSavedFile = new RandomAccessFile(sName,"rw"); $0E+8xE
this.nPos = nPos; }Pg}"fb^
oSavedFile.seek(nPos); m"iA#3l*=
} :]@c%~~!&
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public synchronized int write(byte[] b,int nStart,int nLen) _Ns EeKU
{ K8sRan[4}
int n = -1; _V-K yK
try{ p/HDG
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oSavedFile.write(b,nStart,nLen); 2H)4}5H
n = nLen; 7PX`kI
} ,
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catch(IOException e) 1
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{ @a?7D;+<
e.printStackTrace (); 5dj@N3ZX7;
} a,c!#iyl3
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return n; WR"D7{>tw
} YOD.y!.zq7
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} a4__1N^Qj
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/* tTLg;YjN
**SiteInfoBean.java 05`"U#`:
*/ lb-1z]YwQ
package NetFox; l?U=s7s0?
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public class SiteInfoBean { V*uE83x1
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private String sSiteURL; //Site's URL 27e!KG[&
private String sFilePath; //Saved File's Path YB5"i9T2
private String sFileName; //Saved File's Name g"evnp
private int nSplitter; //Count of Splited Downloading File -)`_w^Ox
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public SiteInfoBean() L=4+rshl!_
{//nSplitter的缺省值为5 !mmMAsd,
//default value of nSplitter is 5 }'$PYAf6
this("","","",5); KhHFJo[8sf
} $')C&
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 50^ux:Uv+N
{
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sSiteURL= sURL; D(AH3`*|#
sFilePath = sPath; 6}"c4^k6
sFileName = sName; dI{DiPho
this.nSplitter = nSpiltter; Q5+1'mzAB
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} f2i:I1 p("
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public String getSSiteURL() :aesG7=O
{ E#B-JLMGl
return sSiteURL; ?l0eU@rwQ
} Hc)z:x;Sj
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public void setSSiteURL(String value) HC%Hbc~S_Q
{ .A2$C|a*
sSiteURL = value; =&WIa#!=
} 'a['lF
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public String getSFilePath() v`HER6
{ nI\6aG?`
return sFilePath; Y}:~6`-jj
} k{}> *pCU
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public void setSFilePath(String value) b2m={q(s
{ Zse&{
sFilePath = value; $9)os7H7
} jf~](TK
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public String getSFileName() Yj/afn(Jt
{ p)y5[HX
return sFileName; j/O~8o&
} i5VZ,E^E
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public void setSFileName(String value) ;CYoc4e
{ _fHC+lwN
sFileName = value; B/twak\
} bdg6B7%Q
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public int getNSplitter() $%y q[$^
{ +V3mF_s|z
return nSplitter; )^>LnQ_u
} 7' G;ijx
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public void setNSplitter(int nCount) t#k]K]
{ z*\_+u~u
nSplitter = nCount; 7oE0;'
} 2}hJe+#v
} A3jxjQ
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/* T+kV~ w{
**Utility.java fkA+:j~z_
*/ mq`/nAmt
package NetFox; 6_CP?X+T
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public class Utility { sy: xA w
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public Utility() Ez3fL&*
{ {w@qFE'b
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} d>QFmsh-
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//线程睡眠 50,'z?-_
public static void sleep(int nSecond) !nv wRQ
{ FY1iY/\Cn
try{ E }L Hp
Thread.sleep(nSecond); `|dyT6V0I_
} L)e"qC_-
catch(Exception e) H QqFrR
{ U0x
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e.printStackTrace (); YvR bM
} r/Y J, 2!
} ij"~]I
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//日志 GEBSUvM 7
public static void log(String sMsg) UcRP/LR%C
{ A_xC@$1e<
System.err.println(sMsg); #N|\7(#~u
} OF-k7g7
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public static void log(int sMsg) 7sot?gF
{ vsY?q8+P
System.err.println(sMsg); WtT;y|W
} 8=8hbdy;
} kf,
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/* afm\Iv[*
**TestMethod.java LEb$Fd
*/ s,z~qL6&
package NetFox; 19!?oeOU
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public class TestMethod { q m3\)9C
b1&