Exemple de méthode java.util.zip.Deflater.reset ()
La description
le java.util.zip.Deflater.reset()La méthode réinitialise le déflateur afin qu'un nouvel ensemble de données d'entrée puisse être traité. Conserve le niveau de compression actuel et les paramètres de stratégie.
Déclaration
Voici la déclaration pour java.util.zip.Deflater.reset() méthode.
public void reset()Exemple
L'exemple suivant montre l'utilisation de la méthode java.util.zip.Deflater.reset ().
package com.tutorialspoint;
import java.io.UnsupportedEncodingException;
import java.util.zip.DataFormatException;
import java.util.zip.Deflater;
import java.util.zip.Inflater;
public class DeflaterDemo {
public static void main(String[] args)
throws DataFormatException, UnsupportedEncodingException {
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");
// Compress the bytes
byte[] output = new byte[1024];
Deflater deflater = new Deflater();
deflater.reset();
deflater.setInput(input);
deflater.finish();
int compressedDataLength = deflater.deflate(output,0 , output.length, Deflater.NO_FLUSH);
System.out.println("Total uncompressed bytes output :" + deflater.getTotalOut());
System.out.println("Compressed Message Checksum :" + deflater.getAdler());
deflater.finished();
System.out.println("Compressed Message length : " + compressedDataLength);
// Decompress the bytes
Inflater inflater = new Inflater();
inflater.setInput(output, 0, compressedDataLength);
byte[] result = new byte[1024];
int resultLength = inflater.inflate(result);
inflater.finished();
// Decode the bytes into a String
message = new String(result, 0, resultLength, "UTF-8");
System.out.println("UnCompressed Message Checksum :" + inflater.getAdler());
System.out.println("UnCompressed Message length : " + message.length());
}
}Compilons et exécutons le programme ci-dessus, cela produira le résultat suivant -
Original Message length : 300
Total uncompressed bytes output :42
Compressed Message Checksum :368538129
Compressed Message length : 42
UnCompressed Message Checksum :368538129
UnCompressed Message length : 300