Java IO.pdf - Nguyen Dang Binh

Java I/O
the files to be stored in the archive are read from the command line. An optional -d
command-line flag can be used to set the level of compression from 0 to 9.
Example 9.10. The Zipper Program
import java.util.zip.*;
import java.io.*;
import com.macfaq.io.*;
public class Zipper {
}
}
public static void main(String[] args) {
if (args.length < 2) {
System.out.println("Usage: java Zipper [-d level] name.zip"+
" file1 file2...");
return;
}
String outputFile = args[0];
// Maximum compression is our default.
int level = 9;
int start = 1;
if (args[0].equals("-d")) {
try {
level = Integer.parseInt(args[1]);
outputFile = args[2];
start = 3;
}
catch (Exception e) {
System.out.println("Usage: java Zipper [-d level] name.zip"
" file1 file2...");
return;
}
}
try {
FileOutputStream fout = new FileOutputStream(outputFile);
ZipOutputStream zout = new ZipOutputStream(fout);
zout.setLevel(level);
for (int i = start; i < args.length; i++) {
ZipEntry ze = new ZipEntry(args[i]);
try {
System.out.println("Compressing " + args[i]);
FileInputStream fin = new FileInputStream(args[i]);
zout.putNextEntry(ze);
StreamCopier.copy(fin, zout);
zout.closeEntry();
fin.close();
}
catch (IOException e) {System.err.println(e);}
}
zout.close();
}
catch (Exception e) {System.err.println(e);}
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