Aquesta classe implementa un filtre de flux per llegir dades comprimides en el format de fitxer GZIP. Constructors
GZIPInputStream(InputStream in):
Crea un flux d'entrada nou amb una mida de memòria intermèdia predeterminada.
GZIPInputStream(InputStream en mida int):
Crea un flux d'entrada nou amb la mida de memòria intermèdia especificada. Mètodes:
void close():
Closes this input stream and releases any system resources associated with the stream.
Syntax : public void close() throws IOException Specified by: close in interface Closeable Specified by: close in interface AutoCloseable Overrides: close in class InflaterInputStream Throws: IOException
int read(byte[] buf int off int len):
Reads uncompressed data into an array of bytes. If len is not zero the method will block until some input can be decompressed; otherwise no bytes are read and 0 is returned.
Syntax : public int read(byte[] buf int off int len) throws IOException Overrides: read in class InflaterInputStream Parameters: buf - the buffer into which the data is read off - the start offset in the destination array b len - the maximum number of bytes read Returns: the actual number of bytes read or -1 if the end of the compressed input stream is reached Throws: NullPointerException IndexOutOfBoundsException ZipException IOException
Mètodes heretats de la classe java.util.zip.InflaterInputStream Marca de marca d'emplenament disponible. Omet de restabliment de lectura admesa Mètodes heretats de la classe java.io.FilterInputStream llegir Mètodes heretats de la classe java.lang.Object clonar és igual a finalize getClass hashCode notify notifyAll toString wait wait wait Programa: Java
//Java program demonstrating GZipInputStream methods importjava.io.FileInputStream;importjava.io.FileOutputStream;importjava.io.IOException;importjava.util.Arrays;importjava.util.zip.GZIPInputStream;classGZipInputStreamDemo{publicstaticvoidmain(String[]args)throwsIOException{FileInputStreamfis=newFileInputStream('file.txt');GZIPInputStreamgzis=newGZIPInputStream(fis);//Uncompressed FileContents //01234567890 byteb[]=newbyte[10];//skipping 1 byte gzis.skip(1);//illustrating available() and //read(byte b[]int offint len) if(gzis.available()!=-1)gzis.read(b);System.out.println(Arrays.toString(b));//closing the stream gzis.close();}}