How we check whether zip file corrupted or valid Zip file before going to extract itmy code`\[code\]import java.io.IOException;import java.i
utputStream;import java.util.zip.ZipEntry;import java.util.zip.ZipInputStream;public void unzip() { FileInputStream fin = null; ZipInputStream zin = null; OutputStream fout = null; File outputDir = new File(_location); File tmp = null; try { fin = new FileInputStream(_zipFile); zin = new ZipInputStream(fin); ZipEntry ze = null; while ((ze = zin.getNextEntry()) != null) { Log.d("Decompress", "Unzipping " + ze.getName()); if (ze.isDirectory()) { dirChecker(ze.getName()); } else { tmp = File.createTempFile( "decomp", ".tmp", outputDir ); fout = new BufferedOutputStream(new FileOutputStream(tmp)); DownloadFile.copyStream( zin, fout, _buffer, BUFFER_SIZE ); zin.closeEntry(); fout.close(); fout = null; tmp.renameTo( new File(_location + ze.getName()) ); tmp = null; } } zin.close(); zin = null; } catch (IOException e) { throw new RuntimeException(e); } finally { if ( tmp != null ) { try { tmp.delete(); } catch (Exception ignore) {;} } if ( fout != null ) { try { fout.close(); } catch (Exception ignore) {;} } if ( zin != null ) { try { zin.closeEntry(); } catch (Exception ignore) {;} } if ( fin != null ) { try { fin.close(); } catch (Exception ignore) {;} } }}\[/code\]`this work fine with valid zipfile, but invalid zipfile it doesen't throw any exception not produce anything, but i need to confirm the validity of zip file before going to unzip it
utputStream;import java.util.zip.ZipEntry;import java.util.zip.ZipInputStream;public void unzip() { FileInputStream fin = null; ZipInputStream zin = null; OutputStream fout = null; File outputDir = new File(_location); File tmp = null; try { fin = new FileInputStream(_zipFile); zin = new ZipInputStream(fin); ZipEntry ze = null; while ((ze = zin.getNextEntry()) != null) { Log.d("Decompress", "Unzipping " + ze.getName()); if (ze.isDirectory()) { dirChecker(ze.getName()); } else { tmp = File.createTempFile( "decomp", ".tmp", outputDir ); fout = new BufferedOutputStream(new FileOutputStream(tmp)); DownloadFile.copyStream( zin, fout, _buffer, BUFFER_SIZE ); zin.closeEntry(); fout.close(); fout = null; tmp.renameTo( new File(_location + ze.getName()) ); tmp = null; } } zin.close(); zin = null; } catch (IOException e) { throw new RuntimeException(e); } finally { if ( tmp != null ) { try { tmp.delete(); } catch (Exception ignore) {;} } if ( fout != null ) { try { fout.close(); } catch (Exception ignore) {;} } if ( zin != null ) { try { zin.closeEntry(); } catch (Exception ignore) {;} } if ( fin != null ) { try { fin.close(); } catch (Exception ignore) {;} } }}\[/code\]`this work fine with valid zipfile, but invalid zipfile it doesen't throw any exception not produce anything, but i need to confirm the validity of zip file before going to unzip it