Java Implementation Zip decompression

The program implements ZIP compression. Divided into 2 parts: compression (compression) and decompression (decompression)

Approximate functions include the use of polymorphic, recursive and other Java core technology, can be a single file and any Cascade folder compression and decompression. You need to customize the source input path and the target output path in your code.

1. PackageCom.han; 2. 3.ImportJava.io.*; 4.Importjava.util.zip.*; 5. 6./**7. * The program implemented ZIP compression.     Divided into 2 parts: compression (compression) and decompression (decompression) 8.     * <p> 9. * Approximate functions include the use of polymorphic, recursive and other Java core technology, can be a single file and any Cascade folder compression and decompression. You need to customize the source input path and the target output path in your code.     * <p> 11. * In this section of the code, the implementation is the compression section, the decompression section see the Decompression section of this package.     12. * 13. * @authorHAN 14.     * 15. */16. 17. Public classmyzipcompressing {18.Private intK = 1;//defining recursive number variables19. 20. Publicmyzipcompressing () {21st.//TODO auto-generated Constructor stub22. }  23. 24./***@paramargs 26. */27. Public Static voidMain (string[] args) {28.//TODO auto-generated Method Stubmyzipcompressing book =Newmyzipcompressing (); 30.Try {  Book.zip ("C:\\users\\gaowen\\desktop\\ziptestcompressing.zip",  32.NewFile ("C:\\users\\gaowen\\documents\\tencent Files")); 33.}Catch(Exception e) {34.//TODO auto-generated Catch block35.  E.printstacktrace (); 36. }  37. 38. }  39. 40.Private voidZip (String zipfilename, File inputfile)throwsException {System.out.println ("in compression ..."); Zipoutputstream out =NewZipoutputstream (NewFileOutputStream (43.  Zipfilename)); Bufferedoutputstream bo =NewBufferedoutputstream (out); 45.  Zip (out, Inputfile, Inputfile.getname (), Bo); 46.  Bo.close (); Out.close ();//output stream offSYSTEM.OUT.PRINTLN ("Compression complete"); 49. }  50. 51.Private voidZip (Zipoutputstream out, File F, String base,Bufferedoutputstream Bo)throwsException {//Method Overloading53.if(F.isdirectory ()) {File[] fl =F.listfiles (); 55.if(Fl.length = = 0) {  Out.putnextentry (NewZipEntry (base + "/"));//Create a Zip compression entry point baseSystem.out.println (base + "/"); 58. }  59. for(inti = 0; i < fl.length; i++) {  Zip (out, fl[i], base + "/" + Fl[i].getname (), Bo);//recursively traverse subfolders61. }  System.out.println ("First" + K + "sub-recursion")); k++.; 64.}Else {  Out.putnextentry (NewZipEntry (base));//Create a Zip compression entry point base66.  System.out.println (base); FileInputStream in =NewFileInputStream (f); Bufferedinputstream bi =NewBufferedinputstream (in); 69.intb; 70. while((b = Bi.read ())! =-1) {  Bo.write (b);//writes a stream of bytes to the current zip directory72. }  73.  Bi.close (); In.close ();//input stream off75. }  76. }  77.}

1. PackageCom.han; 2. 3.ImportJava.io.*; 4.Importjava.util.zip.*; 5./**6. * The program implemented ZIP compression.     Divided into 2 parts: 7.     * Compression (compression) with decompression (decompression) 8.     * <p> 9. * Approximate functions include the use of polymorphic, recursive and other Java core technology, can be a single file and any Cascade folder compression and decompression. 10. * You need to customize the source input path and the target output path in your code.     One. * <p> 12. * In this section of the code, the implementation is the decompression section, the compression section is shown in the compression section of this package. *@authorHAN 14.     * 15. */16. Public classcopyofmyzipdecompressing {17. 18. Public Static voidMain (string[] args) {19.//TODO auto-generated Method Stub20.LongStarttime=System.currenttimemillis (); 21st.Try {  Zipinputstream zin=NewZipinputstream (NewFileInputStream ("C:\\users\\han\\desktop\\stock\\spectrecompressed.zip"));//input source Zip pathBufferedinputstream bin=NewBufferedinputstream (Zin); String parent= "C:\\users\\han\\desktop";//Output Path (folder directory). File fout=NULL; 27.  ZipEntry entry; 28.Try {  29. while((Entry = Zin.getnextentry ())! =NULL&&!entry.isdirectory ()) {  fout=.NewFile (Parent,entry.getname ()); 31.if(!fout.exists ()) {  32. (NewFile (Fout.getparent ())). Mkdirs (); 33. }  FileOutputStream out=NewFileOutputStream (Fout); Bufferedoutputstream bout=NewBufferedoutputstream (out); 36.intb; 37. while((B=bin.read ())!=-1){  38.  Bout.write (b); 39. }  40.  Bout.close (); 41.  Out.close (); System.out.println (fout+ "Decompression succeeded"); 43. }  44.  Bin.close (); 45.  Zin.close (); 46.}Catch(IOException e) {47.//TODO auto-generated Catch block48.  E.printstacktrace (); 49. }  50.}Catch(FileNotFoundException e) {51.//TODO auto-generated Catch block52.  E.printstacktrace (); 53. }  54.LongEndtime=System.currenttimemillis (); SYSTEM.OUT.PRINTLN ("Time Consuming:" + (Endtime-starttime) + "MS"); 56. }  57. 58.}

Java Implementation Zip decompression