java Creare un file compresso in formato ZIP

Posted 2021-05-08

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

public class Main {
  
public void createZipFile() {
  
try {
String inputFileName = “miofile.txt”;
String zipFileName = “miofilecompresso.zip”;
//Creare gli stream d’input e output
FileInputStream inStream = new FileInputStream(inputFileName);
ZipOutputStream outStream = new ZipOutputStream(new FileOutputStream(zipFileName));
// Aggiungere un oggetto ZipEntry allo stream d’output
outStream.putNextEntry(new ZipEntry(inputFileName));
byte[] buffer = new byte[1024];
int bytesRead;
//Ciascuna porzione di dati letti dallo stream di input
//viene scritta nello stream di output
while ((bytesRead = inStream.read(buffer)) > 0) {
outStream.write(buffer, 0, bytesRead);
}
outStream.closeEntry();
outStream.close();
inStream.close();
} catch (IOException ex) {
ex.printStackTrace();
 }
}
public static void main(String[] args) {
new Main().createZipFile();
 }
}