- java.util.zip Package Classes
- java.util.zip - Home
- java.util.zip - Adler32
- java.util.zip - CheckedInputStream
- java.util.zip - CheckedOutputStream
- java.util.zip - CRC32
- java.util.zip - Deflater
- java.util.zip - DeflaterInputStream
- java.util.zip - DeflaterOutputStream
- java.util.zip - GZIPInputStream
- java.util.zip - GZIPOutputStream
- java.util.zip - Inflater
- java.util.zip - InflaterInputStream
- java.util.zip - InflaterOutputStream
- java.util.zip - ZipEntry
- java.util.zip - ZipFile
- java.util.zip - ZipInputStream
- java.util.zip - ZipOutputStream
- java.util.zip Package Extras
- java.util.zip - Exceptions
- java.util.zip - Error
- java.util.zip Useful Resources
- java.util.zip - Quick Guide
- java.util.zip - Useful Resources
- java.util.zip - Discussion
java.util.zip.DeflaterInputStream.skip() Method Example
Description
The java.util.zip.DeflaterInputStream.skip(long n) method skips over and discards data from the input stream. This method may block until the specified number of bytes are read and skipped. Note: While n is given as a long, the maximum number of bytes which can be skipped is Integer.MAX_VALUE.
Declaration
Following is the declaration for java.util.zip.DeflaterInputStream.skip(long n) method.
public long skip(long n) throws IOException
Parameters
n − number of bytes to be skipped.
Returns
the actual number of bytes skipped.
Exceptions
IOException − if an I/O error occurs or if this stream is already closed.
Example
The following example shows the usage of java.util.zip.DeflaterInputStream.skip(long n) method.
package com.tutorialspoint; import java.io.ByteArrayInputStream; import java.io.IOException; import java.util.zip.DataFormatException; import java.util.zip.Deflater; import java.util.zip.InflaterInputStream; public class DeflaterInputStreamDemo { public static void main(String[] args) throws DataFormatException, IOException { String message = "Welcome to TutorialsPoint.com;" +"Welcome to TutorialsPoint.com;" +"Welcome to TutorialsPoint.com;" +"Welcome to TutorialsPoint.com;" +"Welcome to TutorialsPoint.com;" +"Welcome to TutorialsPoint.com;" +"Welcome to TutorialsPoint.com;" +"Welcome to TutorialsPoint.com;" +"Welcome to TutorialsPoint.com;" +"Welcome to TutorialsPoint.com;"; System.out.println("Original Message length : " + message.length()); byte[] input = message.getBytes("UTF-8"); int length = message.length(); // Compress the bytes byte[] output = new byte[1024]; Deflater deflater = new Deflater(); deflater.setInput(input); deflater.finish(); int compressedDataLength = deflater.deflate(output,0 , output.length, Deflater.NO_FLUSH); System.out.println("Total uncompressed bytes input :" + deflater.getTotalIn()); System.out.println("Compressed Message Checksum :" + deflater.getAdler()); deflater.finished(); System.out.println("Compressed Message length : " + compressedDataLength); ByteArrayInputStream bin = new ByteArrayInputStream(output); InflaterInputStream inflaterInputStream = new InflaterInputStream(bin); byte[] result = new byte[1024]; System.out.println("Before Skipping, available: " + inflaterInputStream.available()); inflaterInputStream.skip(result.length); System.out.println("After Skipping, available: " + inflaterInputStream.available()); inflaterInputStream.close(); } }
Let us compile and run the above program, this will produce the following result −
Original Message length : 300 Total uncompressed bytes input :300 Compressed Message Checksum :368538129 Compressed Message length : 42 Before Skipping, available: 1 After Skipping, available: 0Print
javazip_deflaterinputstream.htm
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