- 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.DeflaterOutputStream.write() Method Example
Description
The java.util.zip.DeflaterOutputStream.write(byte[] b, int off, int len) method writes an array of bytes to the compressed output stream. This method will block until all the bytes are written.
Declaration
Following is the declaration for java.util.zip.DeflaterOutputStream.write(byte[] b, int off, int len) method.
public void write(byte[] b, int off, int len) throws IOException
Parameters
b − the data to be written.
off − the start offset of the data.
len − the length of the data.
Exceptions
IOException − if an I/O error has occurred.
Example
The following example shows the usage of java.util.zip.DeflaterOutputStream.write(byte[] b, int off, int len) method.
package com.tutorialspoint; import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.FileInputStream; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.util.Arrays; import java.util.zip.Adler32; import java.util.zip.CheckedInputStream; import java.util.zip.DataFormatException; import java.util.zip.Deflater; import java.util.zip.DeflaterInputStream; import java.util.zip.DeflaterOutputStream; import java.util.zip.Inflater; import java.util.zip.InflaterInputStream; public class DeflaterOutputStreamDemo { 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;"; String dictionary = "Welcome"; System.out.println("Original Message length : " + message.length()); byte[] input = message.getBytes("UTF-8"); // Compress the bytes ByteArrayOutputStream arrayOutputStream = new ByteArrayOutputStream(); DeflaterOutputStream outputStream = new DeflaterOutputStream(arrayOutputStream); outputStream.write(input, 0, input.length); outputStream.close(); //Read and decompress the data byte[] readBuffer = new byte[5000]; ByteArrayInputStream arrayInputStream = new ByteArrayInputStream(arrayOutputStream.toByteArray()); InflaterInputStream inputStream = new InflaterInputStream(arrayInputStream); int read = inputStream.read(readBuffer); //Should hold the original (reconstructed) data byte[] result = Arrays.copyOf(readBuffer, read); // Decode the bytes into a String message = new String(result, "UTF-8"); System.out.println("UnCompressed Message length : " + message.length()); } }
Let us compile and run the above program, this will produce the following result −
Original Message length : 300 UnCompressed Message length : 300
javazip_deflateroutputstream.htm
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