Не пойму куда копать теперь...
package com.javarush.task.task31.task3106;
import java.io.*;
import java.nio.file.Files;
import java.util.*;
import java.util.zip.ZipInputStream;
/*
Разархивируем файл
*/
public class Solution {
public static void main(String[] args) throws IOException {
/*args = new String[]{"c:/somedir/result.png",
"c:/somedir/archive.zip.003",
"c:/somedir/archive.zip.001",
"c:/somedir/archive.zip.002"};*/
String resultFileName = args[0];
File resultFile = new File(resultFileName);
if (!resultFile.exists()) Files.createFile(resultFile.toPath());
Set<String> zipFileSet = new TreeSet<>(Arrays.asList(args).subList(1, args.length));
List<FileInputStream> fisList = new ArrayList<>();
//zipFileSet.forEach(System.out::println);
for (String s : zipFileSet) {
fisList.add(new FileInputStream(s));
}
try (ZipInputStream zis = new ZipInputStream(new SequenceInputStream(Collections.enumeration(fisList)));
OutputStream os = new BufferedOutputStream(new FileOutputStream(resultFile))) {
while (zis.getNextEntry() != null) {
final int bufSize = 1024;
byte[] buffer = new byte[bufSize];
int count;
while ((count = zis.read(buffer)) != -1) {
os.write(buffer, 0, count);
}
os.flush();
}
}
}
}