Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.nio.file.attribute.PosixFilePermission;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.attribute.PosixFileAttributeView;
import java.nio.file.attribute.PosixFileAttributes;
import java.nio.file.attribute.PosixFilePermission;
import java.nio.file.attribute.PosixFilePermissions;
import java.util.EnumSet;
import java.util.Set;

public class Main {
    public static void main(String[] args) throws Exception {
        Path path = Paths.get("test");
        PosixFileAttributeView posixView = Files.getFileAttributeView(path, PosixFileAttributeView.class);
        if (posixView == null) {
            System.out.format("POSIX attribute view  is not  supported%n.");
            return;
        }
        readPermissions(posixView);
        updatePermissions(posixView);
    }

    public static void readPermissions(PosixFileAttributeView posixView) throws Exception {
        PosixFileAttributes attribs;
        attribs = posixView.readAttributes();
        Set<PosixFilePermission> permissions = attribs.permissions();
        // Convert the set of posix file permissions into rwxrwxrwx form
        String rwxFormPermissions = PosixFilePermissions.toString(permissions);
        System.out.println(rwxFormPermissions);
    }

    public static void updatePermissions(PosixFileAttributeView posixView) throws Exception {
        Set<PosixFilePermission> permissions = EnumSet.of(PosixFilePermission.OWNER_READ,
                PosixFilePermission.OWNER_WRITE, PosixFilePermission.GROUP_READ);
        posixView.setPermissions(permissions);
        System.out.println("Permissions set successfully.");
    }
}