Java program to demonstrate that NIO will delete files that are read-only

NioTest.java

import java.io.FileOutputStream;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.attribute.PosixFilePermission;
import java.util.HashSet;
import java.util.Set;

public class NioTest {
    public static void main(String[] argv) throws Exception {
        System.out.println("Hello, world");
        Path foo = Paths.get("foo");
        if (Files.exists(foo)) {
            System.out.println("Foo exists: " + Files.exists(foo));
        } else {
            // Make the test file
            new FileOutputStream("foo").close();
            Set<PosixFilePermission> perms = new HashSet<PosixFilePermission>();
            perms.add(PosixFilePermission.OWNER_READ);
            perms.add(PosixFilePermission.GROUP_READ);
            perms.add(PosixFilePermission.OTHERS_READ);
            Files.setPosixFilePermissions(foo, perms);
        }

        // Buh bye
        Files.delete(foo);
    }
}

A day when I learn something, is a good day 😊