+ copy file

DemoFile.java

package lesson8.file;


import java.io.*;

public class DemoFile {


    public static void main(String[] args) {

        copyFile(new File("/Users/anna/Documents/directorytest/testtest.txt"));
//        createFile();
//        File fileTest = new File("/Users/anna/Documents/directorytest");
//        getFolderTree(fileTest);
    }

    public static void copyFile(File file) {

        String fileName = file.getName();
        System.out.println(fileName);
        FileReader fileReader;
        BufferedReader reader = null;
        FileWriter writer = null;
        String line;

        try {
            fileReader = new FileReader(file);
            reader = new BufferedReader(fileReader);
            
            writer = new FileWriter("copy" + fileName);

            while ((line = reader.readLine()) != null) {
                writer.write(line + "\n");
            }

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
        finally {

            try {
                writer.close();
                reader.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    public static void createFile() {

        File file = new File("file", "test.txt");
        file.mkdirs();
        System.out.println(file.getAbsolutePath());
    }

    public static void getFolderTree(File file) {

        for (File f : file.listFiles()) {

            if(f.isFile())
                System.out.print("\t");
            System.out.println(f.getName());

            if (f.isDirectory()) {
                System.out.print("\t");
                getFolderTree(f);
            }
        }
    }
}