GZIPInputStream(入力ストリーム) :デフォルトのバッファー サイズで新しい入力ストリームを作成します。 GZIPInputStream(int サイズの入力ストリーム):指定されたバッファ サイズで新しい入力ストリームを作成します。

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 

  //Java program demonstrating GZipInputStream methods  import java.io.FileInputStream;  import java.io.FileOutputStream;  import java.io.IOException;  import java.util.Arrays; import java.util.zip.GZIPInputStream;  class GZipInputStreamDemo  {   public static void main(String[] args) throws IOException   {   FileInputStream fis = new FileInputStream('file.txt');   GZIPInputStream gzis = new GZIPInputStream(fis);     //Uncompressed FileContents   //01234567890   byte b[]=new byte[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();   }  }  

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