How to append Same File name With Date Append in Java?

Please Find Code Below :

==================Append.java=======================
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Date;

/**
 *
 * @author ananddw
 */
public class Append {

    public static void main(String[] args) throws IOException {
        /*

         Date date = new Date();
        File file1 = new File("/home/ananddw/Anand.json");
        String file2 = file1.getParent().toString();
        System.out.println("file 2 call ===>" + file2);
        boolean b = false;
        if (!(file1.exists())) {
            b = file1.createNewFile();
        }
        if (b) {
            System.out.println("Empty File successfully created");
        } else {

            String fileContent = "";
              String filename = file1.toString() + date;

            try {
                File f = new File(file1.toString());

                FileInputStream inp = new FileInputStream(f);

                byte[] bf = new byte[(int) f.length()];

                inp.read(bf);

                fileContent = new String(bf, "UTF-8");

                System.out.println("file===>" + fileContent);

            } catch (FileNotFoundException e) {

            } catch (IOException e) {
            }
            System.out.println("file name in else===>" + filename);
            FileWriter fw = new FileWriter(filename, true);
            System.out.println("FileWriter===>"+fw);
            String see = null;
            fw.write("Test");
            fw.close();
            System.out.println("Failed to create File");

        }

    }
}