ЛР3. Задание 3

src/tse/lr3/DirCopy.java

@@ -1,25 +1,111 @@
 package tse.lr3;
 
+import java.io.BufferedWriter;
 import java.io.File;
+import java.io.FileFilter;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStreamWriter;
+import java.nio.channels.FileChannel;
 
 /**
  *
  * @author aNNiMON
  */
 public class DirCopy extends AbstractDirectoryChooser {
+    
+    private static final int DAYS = 3;
 
     public static void main() {
         new DirCopy().setVisible(true);
     }
     
-    private File dirSource;
+    private File dirSource, dirDest, logFile;
+    private BufferedWriter writer;
 
     public DirCopy() {
         super("Копирование директорий");
+        createFilesAndDirs();
+    }
+
+    private void createFilesAndDirs() {
+        dirDest = new File("E:\\LR_3\\task3");
+        dirDest.mkdirs();
+        logFile = new File("E:\\LR_3\\task3_log.txt");
+        try {
+            writer = new BufferedWriter(
+                    new OutputStreamWriter(new FileOutputStream(logFile, true), "UTF-8")
+            );
+        } catch (IOException ex) {
+            ex.printStackTrace();
+        }
     }
 
     @Override
     protected void directorySelected(File directory) {
-        System.out.println(directory.getAbsolutePath());
+        dirSource = directory;
+        
+        dirDest.mkdirs();
+        File[] files = dirSource.listFiles(lastModifiedFilter);
+        if (files.length > 0) {
+            writeLog("Копируем из " + dirSource.getAbsolutePath() + " в " + dirDest.getAbsolutePath());
+            for (File file : files) {
+                try {
+                    copyFile(file, dirDest);
+                    writeLog(file.getAbsolutePath());
+                } catch (IOException ex) {
+                    ex.printStackTrace();
+                }
+            }
+        } else writeLog("Нечего копировать из " + dirSource.getAbsolutePath());
+        
+        if (writer != null) {
+            try {
+                writer.flush();
+                writer.close();
+            } catch (IOException ex) {}
+        }
     }
+    
+    private void copyFile(File sourceFile, File destDirectory) throws IOException {
+        File destFile = new File(destDirectory, sourceFile.getName());
+        if (!destFile.exists()) {
+            destFile.createNewFile();
+        }
+
+        FileChannel source = null;
+        FileChannel destination = null;
+        try {
+            source = new FileInputStream(sourceFile).getChannel();
+            destination = new FileOutputStream(destFile).getChannel();
+            destination.transferFrom(source, 0, source.size());
+        } finally {
+            if (source != null) {
+                source.close();
+            }
+            if (destination != null) {
+                destination.close();
+            }
+        }
+    }
+    
+    private void writeLog(String filename) {
+        System.out.println(filename);
+        try {
+            writer.write(filename);
+            writer.newLine();
+        } catch (IOException ex) { }
+    }
+    
+    private final FileFilter lastModifiedFilter = new FileFilter() {
+
+        @Override
+        public boolean accept(File pathname) {
+            if (pathname.isDirectory()) return false;
+            
+            long lastDays = System.currentTimeMillis() - (DAYS * 24 * 60 * 60 * 1000);
+            return (pathname.lastModified() >= lastDays);
+        }
+    };
 }