/* s0iG|vw
**SiteFileFetch.java `q36`Wn
*/ 'f<N7%eZ
package NetFox; s\;/U|P_
import java.io.*; Tgz=I4g
import java.net.*; @R5^J{T
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public class SiteFileFetch extends Thread { zGtJ@HbB
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SiteInfoBean siteInfoBean = null; //文件信息Bean =^KgNQ
long[] nStartPos; //开始位置 |6Q5bV
long[] nEndPos; //结束位置 H{Ewj_L
FileSplitterFetch[] fileSplitterFetch; //子线程对象 a?-&O$UHf\
long nFileLength; //文件长度 6k
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boolean bFirst = true; //是否第一次取文件 EX8+3>)
boolean bStop = false; //停止标志 ii?T:T@
File tmpFile; //文件下载的临时信息 ooVs8T2
DataOutputStream output; //输出到文件的输出流 I>;{BYPV
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//负责整个文件的抓取,控制内部线程(FileSplitterFetch类) JdS,s5Z>
public SiteFileFetch(SiteInfoBean bean) throws IOException 4k225~GQ:C
{ D./{f8
siteInfoBean = bean; E]'
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//tmpFile = File.createTempFile ("zhong","1111",new File(bean.getSFilePath())); S~3|1Hw*tN
tmpFile = new File(bean.getSFilePath()+File.separator + bean.getSFileName()+".info"); inaO{ny y
if(tmpFile.exists ()) :IZAdlz[@
{ S"&Gutu3o
bFirst = false; >`AK'K8{M
read_nPos(); ~2Wus8X-
} ?h[HC"V/2
else 8%K{l g"
{ $U_(e:m}f
nStartPos = new long[bean.getNSplitter()]; r-y;"h'
nEndPos = new long[bean.getNSplitter()]; /wLBmh1"
} AIg4u(j
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} q}t]lD
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public void run() 8{ZTHY-
{ !'N@ZZ
//获得文件长度 B@(d5i{h
//分割文件 #4Z e2T|
//实例FileSplitterFetch 'W(u.
//启动FileSplitterFetch线程 y^C5_w(^jZ
//等待子线程返回 h^ Cm\V
try{ hP)Zm%@0f
if(bFirst) 'V?FeWp
{ ID_4M_G
nFileLength = getFileSize(); UfX~GC;B
if(nFileLength == -1) zcP=+Y)YA
{ WAxNQfEe
System.err.println("File Length is not known!"); (vG*)a
} Dz0D ^(;V
else if(nFileLength == -2) !`e`4y*N
{ 5!?5S$>
System.err.println("File is not access!"); |#_p0yPy
} ?"Ez
else ;<M}ZL@m
{ :GIBB=D9
for(int i=0;i<nStartPos.length;i++) "%Ok3Rvv
{ zpwoK&T+
nStartPos = (long)(i*(nFileLength/nStartPos.length)); {d.z/Buu
} KVOV<uDCj
for(int i=0;i<nEndPos.length-1;i++) 4G,FJjE`p
{ 2 q4p-
nEndPos = nStartPos[i+1]; @mCe{r*`
} 6=/sEz S'
nEndPos[nEndPos.length-1] = nFileLength; f- XUto
} )7
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} HS<Jp44
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//启动子线程 7*PBJt\
fileSplitterFetch = new FileSplitterFetch[nStartPos.length]; &za
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for(int i=0;i<nStartPos.length;i++) v/ N[)<
{ Ro]Z9C>1o
fileSplitterFetch = new FileSplitterFetch(siteInfoBean.getSSiteURL(), Yk|6?e{+)
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(), sbmtx/%U
nStartPos,nEndPos,i); +bE{g@%@+
Utility.log("Thread " + i + " , nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); WJD2(el
fileSplitterFetch.start(); 1\fx57a\
} )YAa7\Od
// fileSplitterFetch[nPos.length-1] = new FileSplitterFetch(siteInfoBean.getSSiteURL(), }>6e-]MHfR
siteInfoBean.getSFilePath() + File.separator + siteInfoBean.getSFileName(),nPos[nPos.length-1],nFileLength,nPos.length-1); rC!O}(4t%$
// Utility.log("Thread " + (nPos.length-1) + " , nStartPos = " + nPos[nPos.length-1] + ", VFf;|PHS
nEndPos = " + nFileLength); M)#9Q=<
// fileSplitterFetch[nPos.length-1].start(); \}Am]Y/ w
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//等待子线程结束 >pp/4Ia!
//int count = 0; zd[k|lj
//是否结束while循环 C>Hdp_Lm
boolean breakWhile = false; i6WPf:#wr
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while(!bStop) 8r(awp
{ "Ol:ni1
write_nPos(); B{)#A?Rh.
Utility.sleep(500); 7"'RE95
breakWhile = true; >UCg3uFj
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for(int i=0;i<nStartPos.length;i++) OdFF)-K>~
{ nms[No?
if(!fileSplitterFetch.bDownOver) (B4)L%
{ j;`pAN('
breakWhile = false; 5@xR`g-
break;
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} "d)YqQ
} K@7%i|H
if(breakWhile) )zxb]Pg+
break; c[ZrQJ
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//count++; O8 .iP+
//if(count>4) =H)]HxEEM
// siteStop(); d'96$e o~
} trDw|WA
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System.err.println("文件下载结束!");
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} inU5eronuj
catch(Exception e){e.printStackTrace ();} 8e-nzc,]
} A8.noV
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//获得文件长度 sY!JB7!j
public long getFileSize() Ypzmc$Xfu
{ p(pfJ^/:(
int nFileLength = -1; 8vuTF*{yZ
try{ S%MDQTM
URL url = new URL(siteInfoBean.getSSiteURL()); c~tl0XU1
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); rhkKK_
httpConnection.setRequestProperty("User-Agent","NetFox"); |Lg2;P7\
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int responseCode=httpConnection.getResponseCode(); =W7-;&
if(responseCode>=400) I-^sJ@V;
{ oZ*?Uh *
processErrorCode(responseCode); 3*I\#Z4p1
return -2; //-2 represent access is error ^gcB+
} bdWdvd:
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String sHeader; ta{24{?M\
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for(int i=1;;i++) v'?Smd1v
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{ <5G(Y#s/?
//DataInputStream in = new DataInputStream(httpConnection.getInputStream ()); )f$4:Pq
//Utility.log(in.readLine()); L6CI9C;-b
sHeader=httpConnection.getHeaderFieldKey(i); UdrgUqq)
if(sHeader!=null) !(q@sw(
{ KyrZ&E.`
if(sHeader.equals("Content-Length")) A@>/PB6n
{ 9.(|ri
nFileLength = Integer.parseInt(httpConnection.getHeaderField(sHeader)); ,+df=>$W
break; AM=,:k$
} Y0g]-B
} oIO@#
else _OG9wi(Fpx
break; )yyH_Ax2
} 02Vfg42
} a2.6S./
catch(IOException e){e.printStackTrace ();} =l:V9u-I^
catch(Exception e){e.printStackTrace ();} ?Ojv<L-f.:
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Utility.log(nFileLength); BR|0uJ.M
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return nFileLength; JL
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} .I~:j`K6
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//保存下载信息(文件指针位置) \2;!}
private void write_nPos() N4;g"k b
{ ,j XK
try{ %P ~;>4i,
output = new DataOutputStream(new FileOutputStream(tmpFile)); |aenQA#
output.writeInt(nStartPos.length); d,?D '/
for(int i=0;i<nStartPos.length;i++) )A*53>JV
{ =7e!'cF[
// output.writeLong(nPos); Z e>R@rK
output.writeLong(fileSplitterFetch.nStartPos); P Ptmh. }e
output.writeLong(fileSplitterFetch.nEndPos); zwC ,,U
} 5{(4%
output.close(); &S
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} Zq&'a_
catch(IOException e){e.printStackTrace ();} fNi&r0/-t
catch(Exception e){e.printStackTrace ();} ,ASNa^7/>
} v76P?[
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//读取保存的下载信息(文件指针位置) 47(_5PFb#
private void read_nPos() odca?
{ Ud+,/pE>FA
try{ /1Gmga5
DataInputStream input = new DataInputStream(new FileInputStream(tmpFile)); m19\H
int nCount = input.readInt(); c/88|k
nStartPos = new long[nCount]; W#!AZ !
nEndPos = new long[nCount]; WYF8?1dt +
for(int i=0;i<nStartPos.length;i++) w/
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{ ;+C$EJw-
nStartPos = input.readLong(); d1_kw
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nEndPos = input.readLong(); (b~l.@xh
} ??aO3Vm{
input.close(); QlvP[Jtr
} I(7GVYM
catch(IOException e){e.printStackTrace ();} Pqx?0f)
catch(Exception e){e.printStackTrace ();} 4z P"h0
} mfg>69,w
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private void processErrorCode(int nErrorCode) ?,7!kTRH
{ Es#:0KH].v
System.err.println("Error Code : " + nErrorCode); ]v}W9{sY
} vfn[&WN]
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//停止文件下载 NV?x<LNWd
public void siteStop() e46`"}r
{ |pZ7k#%
bStop = true; |BM#r fQ
for(int i=0;i<nStartPos.length;i++) rAtCG1Vr
fileSplitterFetch.splitterStop(); .n+
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} p>pN?53S
} l?"^2in.
//负责部分文件的抓取 sg-^ oy*^
**FileSplitterFetch.java /-!Fr:Ox>
*/ evZP*N~G
package NetFox; p #w8$Qjp
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@ NDcO,]
import java.io.*; K:-jn}i?/
import java.net.*; ~D5FnN9
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public class FileSplitterFetch extends Thread { M
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String sURL; //File URL &a'mG=(K_c
long nStartPos; //File Snippet Start Position p:b{>lM
long nEndPos; //File Snippet End Position qF^P\cD
int nThreadID; //Thread's ID +JG05h%'
boolean bDownOver = false; //Downing is over k@%5P-e}
boolean bStop = false; //Stop identical $- ]G6r
FileAccessI fileAccessI = null; //File Access interface k(tB+k!vH\
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public FileSplitterFetch(String sURL,String sName,long nStart,long nEnd,int id) throws IOException 3}g>/F~
{ 6d8)]
this.sURL = sURL; L"vk ^>E6
this.nStartPos = nStart; N/WtQSl
this.nEndPos = nEnd; }@6yROy.
nThreadID = id; Q)4[zStR#
fileAccessI = new FileAccessI(sName,nStartPos);//定位 QZ(O2!Mg
} NG3:=
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public void run() }\H. G
{ SJ22
while(nStartPos < nEndPos && !bStop) cM9>V2:P
{ %4rlB$x
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try{ uL7}JQ,
URL url = new URL(sURL); Yur}<>`(
HttpURLConnection httpConnection = (HttpURLConnection)url.openConnection (); D@sMCR
httpConnection.setRequestProperty("User-Agent","NetFox"); n%\\1
String sProperty = "bytes="+nStartPos+"-"; $#/8l58
httpConnection.setRequestProperty("RANGE",sProperty); Fv,c8f
Utility.log(sProperty); E$ 8-8[
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InputStream input = httpConnection.getInputStream(); nTsV>lQY,
//logResponseHead(httpConnection); WxD$k3U
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byte[] b = new byte[1024]; 3ONW u
int nRead; i@P=*lLD
while((nRead=input.read(b,0,1024)) > 0 && nStartPos < nEndPos && !bStop) HQ=pf >
{ ZTqt 4H
nStartPos += fileAccessI.write(b,0,nRead); xzz@Wc^_
//if(nThreadID == 1) M@q)\UQ'
// Utility.log("nStartPos = " + nStartPos + ", nEndPos = " + nEndPos); IeChz d
} ,1|=_M31
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Utility.log("Thread " + nThreadID + " is over!"); MW^FY4V1m
bDownOver = true; QHje}
//nPos = fileAccessI.write (b,0,nRead); Q ijO%)
} Qu<HeSA_
catch(Exception e){e.printStackTrace ();} t3}_mJ
} #,lbM%a
} \QSD*
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//打印回应的头信息 %NlmLWF.
public void logResponseHead(HttpURLConnection con) >~_>.R+{
{ N0D5N(kH%
for(int i=1;;i++) N{RHbSa(
{ nWYfe-zQxg
String header=con.getHeaderFieldKey(i); FB+nN5D/
if(header!=null) nf_(_O=
//responseHeaders.put(header,httpConnection.getHeaderField(header)); v(sS$2J|}
Utility.log(header+" : "+con.getHeaderField(header)); ?JRfhJ:j
else 4u|6^wu.I
break; >4>.
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} [KO\!u|?YS
} |%X_<Cpk
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public void splitterStop() b0%#=KMi
{ @$QtY(a
bStop = true; EG=U](8T
} },5LrX`L
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} 6xh-m
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/* z} VCiS0
**FileAccess.java B%[#["Ol
*//文件访问(定位,写) +C`vO5\0
package NetFox; { iLr$89
import java.io.*; RKs_k`N0
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public class FileAccessI implements Serializable{ aC'#H8e|j
CS"k0V44}
//RandomAccessFile类用于在任意一个文件的特定位置上读/写字节 1*@Q~f:Uk
RandomAccessFile oSavedFile; G
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long nPos; \=W t{
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public FileAccessI() throws IOException oFGgr2Re
{ :SD3
this("",0); eLN(NSPoS
} xdsF! Zb
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public FileAccessI(String sName,long nPos) throws IOException kA 4kQ}q
{ #DTBdBh?I
oSavedFile = new RandomAccessFile(sName,"rw"); EX3;|z@5;
this.nPos = nPos; 'aZAWY d
oSavedFile.seek(nPos); 97!VH>MX
} 5i3nz=~o
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public synchronized int write(byte[] b,int nStart,int nLen) uUpOa+t
{ ~65lDFY/
int n = -1; ]7dal [i
try{ \l;H!y[
oSavedFile.write(b,nStart,nLen); D>q?My
n = nLen; [;INVUwG^
} MES| iB
catch(IOException e) I1Gk^wO
{ 0jefV*3qpB
e.printStackTrace (); '-X913eG!
} j7&0ckN&G
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return n; V:4($
} ZZ;V5o6E
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} A832z`
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/* !}uev
**SiteInfoBean.java ;,_c1x/F
*/ ?jBh=X\]:
package NetFox; POUD*(DqNK
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public class SiteInfoBean { nxYp9,c"
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private String sSiteURL; //Site's URL kIUb`b>B
private String sFilePath; //Saved File's Path .hXdXY
private String sFileName; //Saved File's Name d5B96;3
private int nSplitter; //Count of Splited Downloading File _9zydtw
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public SiteInfoBean() )%5T*}j
{//nSplitter的缺省值为5 s*pgR=dZZ
//default value of nSplitter is 5 "Q@ZS2;A
this("","","",5); !tD,phca~
} 4mzWNr>fb
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public SiteInfoBean(String sURL,String sPath,String sName,int nSpiltter) 7^:0?Q
{ 3~!PJI1
sSiteURL= sURL; R'r^v
sFilePath = sPath; \=/^H
sFileName = sName; Me*]Bh
this.nSplitter = nSpiltter; ,
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} APksY!
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public String getSSiteURL() wMB<^zZmv
{ f)+fdc
return sSiteURL; ojH-;|f
} ~FV
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public void setSSiteURL(String value) _,4f z(
{ f[/E $r99J
sSiteURL = value; #_bSWV4
} uU]4)Hp
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public String getSFilePath() )#dP:
{ ^25[%aJI
return sFilePath; ?qQRA|n*
} Y<S,Xr;J:
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public void setSFilePath(String value) 0 .dSP$e
{ r`L$[C5I
sFilePath = value; )LwB
} Mc6?]wDB]
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public String getSFileName() ^kMgjS}R
{ F+S;u=CKx
return sFileName; i- E~ZfJ
} %!HmtpS
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public void setSFileName(String value) f&Bu_r
{ of^N4
sFileName = value; ;
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} bd2"k;H<o
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public int getNSplitter() eRa1eRgP
{ zRJopcE<
return nSplitter; :R<n{%~
} yl%F}kBR
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public void setNSplitter(int nCount) @"H+QVJ@
{ P~:W+!@5v
nSplitter = nCount; ht S5<+Y
} m(8t |~S
} @fbB3
% ;2x.
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/* {q"l|Oe
**Utility.java E#T-2^nD
*/ S3Tww]q
package NetFox; AtA}OY]D/
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public class Utility { It4J\S
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public Utility() ^=wG#!#V"1
{ ~OEP)c\k
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} $_l@k=
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//线程睡眠 Db=
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public static void sleep(int nSecond) ZSMOq4Y 9
{ %u43Pj
try{ >"S'R9t
Thread.sleep(nSecond); `{/z\
} LeY\{w
catch(Exception e) HT5G HkT
{ ])a?ri
e.printStackTrace (); ]RQQg,|D
} V2'(}k
} #T n~hnW
^c^9kK'
//日志 BRV /7ao="
public static void log(String sMsg) t}`|\*a
{ ]`y4n=L.
System.err.println(sMsg); Kig.hHj@
} HlY4%M5q/
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public static void log(int sMsg) }
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{ d"nE+pgE
System.err.println(sMsg); O.1Z3~r-N
} w-|i8%X
} aIZ@5w"7
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>
/* Om{[ <tL
**TestMethod.java ![:S~x1
*/ 3`k1
package NetFox; 5 8p_b
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public class TestMethod { yIbz\3
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