Exemple de méthode java.util.zip.GZIPInputStream.close ()

La description

le java.util.zip.GZIPInputStream.close() La méthode ferme ce flux d'entrée et libère toutes les ressources système associées au flux.

Déclaration

Voici la déclaration pour java.util.zip.GZIPInputStream.close() méthode.

public void close()
   throws IOException

Exceptions

• IOException - si une erreur d'E / S s'est produite.

Exemple

L'exemple suivant montre l'utilisation de la méthode java.util.zip.GZIPInputStream.close ().

package com.tutorialspoint;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Arrays;
import java.util.zip.DataFormatException;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;

public class GZIPInputStreamDemo {

   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");

      // Compress the bytes
      ByteArrayOutputStream arrayOutputStream = new ByteArrayOutputStream();
      GZIPOutputStream outputStream = new GZIPOutputStream(arrayOutputStream);
      outputStream.write(input);
      outputStream.close();

      //Read and decompress the data
      byte[] readBuffer = new byte[5000];
      ByteArrayInputStream arrayInputStream = 
         new ByteArrayInputStream(arrayOutputStream.toByteArray());
      GZIPInputStream inputStream = new GZIPInputStream(arrayInputStream);
      int read = inputStream.read(readBuffer,0,readBuffer.length);
      inputStream.close();
      //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());
   }
}

Compilons et exécutons le programme ci-dessus, cela produira le résultat suivant -

Original Message length : 300
UnCompressed Message length : 300

Impression