other

src/UE00_Other/findDuplicateFiles.java

@@ -0,0 +1,45 @@
+package UE00_Other;
+
+import java.io.FileWriter;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Stream;
+
+public class findDuplicateFiles {
+    private static final String logfile = "src/UE00_Other/duplicateFiles.log";
+
+    public static void main(String[] args) throws IOException {
+        try (FileWriter _ = new FileWriter(logfile, false)) {
+            System.out.println("File contents cleared.");
+        }
+        writeToFile(duplicatePaths(Path.of("S:/Musik")), logfile);
+    }
+
+    public static void writeToFile(Map<Path, List<Path>> output, String logfile) throws IOException {
+        for (Map.Entry<Path, List<Path>> entry : output.entrySet())
+            if (entry.getValue().size() > 1) try (FileWriter fw = new FileWriter(logfile, true)) {
+                StringBuilder text = new StringBuilder(entry.getKey() + ":\n");
+                for (Path path : entry.getValue()) text.append("\t").append(path).append("\n");
+                fw.write(text.append("\n").toString());
+            }
+    }
+
+    public static Map<Path, List<Path>> duplicatePaths(Path path) {
+        try (Stream<Path> files = Files.walk(path)) {
+            Map<Path, List<Path>> duplicates = new HashMap<>();
+            files.filter(Files::isRegularFile).forEach(file -> {
+                List<Path> temp = duplicates.getOrDefault(file.getFileName(), new ArrayList<>());
+                temp.add(file);
+                duplicates.put(file.getFileName(), temp);
+            });
+            return duplicates;
+        } catch (IOException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}