Java IO - BufferedReader & BufferedWriter

import static java.lang.System.out;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;

public class FileReaderExample {

public final static String PATH_IN = "src/resources/data_input.txt";
public final static String PATH_OUT = "src/resources/data_output.txt";

/**
* example of BufferedReader and BufferedWriter
*
* @throws Exception
*/
public void BufferedReader_Writer() throws Exception {

FileReader fr = new FileReader(PATH_IN);
BufferedReader br = new BufferedReader(fr);

FileWriter fw = new FileWriter(PATH_OUT);
BufferedWriter bw = new BufferedWriter(fw);

String line;
while ((line = br.readLine()) != null) {
out.println(line);
bw.write(line + "\n");
}

String endStr = " - End of BufferedReader ";
out.print(endStr);
bw.write(endStr + "\n");

br.close();
bw.close();
}
}