Classe di test per le API nel package NIO.2

.vscode/launch.json

@@ -1,5 +1,16 @@
 {
     "configurations": [
+        {
+            "type": "java",
+            "name": "CodeLens (Launch) - NIOTest",
+            "request": "launch",
+            "cwd": "${workspaceFolder}",
+            "console": "internalConsole",
+            "stopOnEntry": false,
+            "mainClass": "com.oracle.java8.professional.NIOTest",
+            "args": "",
+            "projectName": "OracleCertificationTest"
+        },
         {
             "type": "java",
             "name": "CodeLens (Launch) - ConsoleTest",

src/com/oracle/java8/professional/NIOTest.java

@@ -0,0 +1,115 @@
+package com.oracle.java8.professional;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.nio.file.DirectoryStream;
+import java.nio.file.FileSystem;
+import java.nio.file.FileSystems;
+import java.nio.file.FileVisitOption;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.PathMatcher;
+import java.nio.file.Paths;
+import java.nio.file.attribute.BasicFileAttributeView;
+import java.nio.file.attribute.BasicFileAttributes;
+import java.nio.file.attribute.FileTime;
+import java.nio.file.attribute.PosixFileAttributes;
+import java.nio.file.attribute.PosixFilePermission;
+import java.nio.file.attribute.PosixFilePermissions;
+import java.util.Set;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+public class NIOTest {
+
+    public static void main(String[] args) throws Exception {
+        doUsingPathTest();
+        doUsingAttributesTest();
+        doUsingPosixAttributesTest();
+        doUsingFileSystemVisitorTest();
+        doUsingPathMatcherTest();
+    }
+
+    private static void doUsingPathTest() throws IOException {
+        Path path = Paths.get("file.txt");
+        boolean exists = Files.exists(path);
+        System.out.println(exists);
+        if (exists) {
+            Files.delete(path);
+        }
+
+        Files.createFile(path);
+        System.out.println(Files.exists(path));
+
+        Path path2 = Paths.get("/home/plague/casa");
+        System.out.println("getFileName(): " + path2.getFileName());
+        System.out.println("getName(1): " + path2.getName(1));
+        System.out.println("getNameCount(): " + path2.getNameCount());
+        System.out.println("getParent(): " + path2.getParent());
+        System.out.println("getRoot(): " + path2.getRoot());
+        System.out.println("subpath(0, 2): " + path2.subpath(0, 2));
+        System.out.println("toString(): " + path2.toString());
+
+        int indentazione = 2;
+        Path myPath = Paths.get("myDir", "subdir1", "subdir2", "test.txt");
+        for (Path scendi : myPath) {
+            System.out.format("%" + indentazione + "s%s%n", "", scendi);
+            indentazione += 2;
+        }
+    }
+
+    private static void doUsingAttributesTest() throws IOException {
+        Path path = Paths.get("file.txt");
+        BasicFileAttributes bfa = Files.readAttributes(path, BasicFileAttributes.class);
+        System.out.println("Data creazione: " + bfa.creationTime());
+        System.out.println("Data ultimo accesso: " + bfa.lastAccessTime());
+        System.out.println("Data ultima modifica: " + bfa.lastModifiedTime());
+        System.out.println("E' una directory? " + bfa.isDirectory());
+
+        FileTime dataUltimaModifica = bfa.lastModifiedTime();
+        FileTime dataCreazione = bfa.creationTime();
+        FileTime ora = FileTime.fromMillis(System.currentTimeMillis());
+
+        BasicFileAttributeView bfaView = Files.getFileAttributeView(path, BasicFileAttributeView.class);
+        bfaView.setTimes(dataUltimaModifica, ora, dataCreazione);
+    }
+
+    private static void doUsingPosixAttributesTest() throws IOException {
+        Path passwd = Paths.get("/home/plague/Documenti/passwd.gpg");
+        PosixFileAttributes pfa = Files.readAttributes(passwd, PosixFileAttributes.class);
+        Set<PosixFilePermission> permessi = PosixFilePermissions.fromString("rw-r--r--");
+        Files.setPosixFilePermissions(passwd, permessi);
+        System.out.println(pfa.permissions());
+        System.out.println(pfa.group());
+    }
+
+    private static void doUsingFileSystemVisitorTest() throws IOException {
+        Path dir = Paths.get("/home/plague");
+        try (DirectoryStream<Path> directoryStream = Files.newDirectoryStream(dir, "*[aeiou]")) {
+            System.out.println("[");
+            for (Path p : directoryStream) {
+                System.out.println(p.getFileName());
+            }
+            System.out.println("]");
+        }
+
+        Path path = Paths.get("file.txt");
+        Stream<Path> stream = Files.walk(Paths.get("/home/plague/exercism"), FileVisitOption.FOLLOW_LINKS);
+        PrintWriter pw = new PrintWriter(path.toFile());
+        for (Path p : stream.collect(Collectors.toList())) {
+            pw.println(p.toString());
+        }
+    }
+
+    private static void doUsingPathMatcherTest() {
+        Path p1 = Paths.get("/home/myfile.txt");
+        Path p2 = Paths.get("myfile.txt");
+        matches(p1, "glob:*.txt");
+        matches(p2, "glob:*.txt");
+    }
+
+    private static void matches(Path path, String glob) {
+        PathMatcher matcher = FileSystems.getDefault().getPathMatcher(glob);
+        System.out.println(matcher.matches(path));
+    }
+}