java.util.zip - GZIPOutputStream Class

Introduction

The java.util.zip.GZIPOutputStream class implements a stream filter for writing compressed data in the GZIP file format.

Class declaration

Following is the declaration for java.util.zip.GZIPOutputStream class −

public class GZIPOutputStream
   extends DeflaterOutputStream

Fields

Following are the fields for java.util.zip.GZIPOutputStream class −

  • protected CRC32 crc − CRC-32 for uncompressed data.

Constructors

Sr.No. Constructor & Description
1

GZIPOutputStream(OutputStream out)

Creates a new output stream with a default buffer size.
2

GZIPOutputStream(OutputStream out, boolean syncFlush)

Creates a new output stream with a default buffer size and the specified flush mode.
3

GZIPOutputStream(OutputStream out, int size)

Creates a new output stream with the specified buffer size.
4

GZIPOutputStream(OutputStream out, int size, boolean syncFlush)

Creates a new output stream with the specified buffer size and flush mode.

Class methods

Sr.No. Method & Description
1 void finish()

Finishes writing compressed data to the output stream without closing the underlying stream.
2 int write(byte[] buf, int off, int len)

Writes array of bytes to the compressed output stream.

Methods inherited

This class inherits methods from the following classes −

  • java.util.zip.DeflaterOutputStream
  • java.io.FilterOutputStream
  • java.lang.Object
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