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/* Get Compression Method of Zip Entry Example This Java example shows how to get compression method used to compress the entry using getMethod method of Java ZipEntry class. */ import java.io.File; import java.io.IOException; import java.util.Enumeration; import java.util.zip.ZipEntry; import java.util.zip.ZipFile; public class GetCompressionMethod { public static void main(String args[]) { try { /* * To Open a zip file, use * * ZipFile(String fileName) * constructor of the ZipFile class. * * This constructor throws IOException for any I/O error. */ ZipFile zipFile = new ZipFile("c:/FileIO/WebFiles.zip"); /* * Get list of zip entries using entries method of * ZipFile class. */ Enumeration e = zipFile.entries(); System.out.println("File NamettttCompression Method"); System.out.println("---------------------------------"); while(e.hasMoreElements()) { ZipEntry entry = (ZipEntry)e.nextElement(); /* * To get compression method used to compress entry, use * * int getMethod() * method of ZipEntry class. * * This method returns the method of compression, or -1 * if not specified. * * Compression method can be either STORED or DEFLATED for * any zip entry. */ int method = entry.getMethod(); if(method == ZipEntry.DEFLATED) System.out.println(entry.getName() + "ttttDeflated"); else if(method == ZipEntry.STORED) System.out.println(entry.getName() + "ttttStored"); else if(method == -1) System.out.println(entry.getName() + "ttttNot Specified"); } /* * close the opened zip file using, * void close() * method. */ zipFile.close(); } catch(IOException ioe) { System.out.println("Error opening zip file" + ioe); } } } /* Output of this program would be File Name Compression Method --------------------------------- css/datagrid.css Deflated css/graph.css Deflated jsps/Masthead.jspf Deflated jsps/Welcome.jsp Deflated */ |
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