Java BufferedReader mark() Method

Example

Mark the start of a file, read a line, then go back and read the same line again:

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

public class Main {
  public static void main(String[] args) throws IOException {
    FileWriter myWriter = new FileWriter("filename.txt");
    myWriter.write("Volvo\nBMW\nFord");
    myWriter.close();
    BufferedReader br = new BufferedReader(new FileReader("filename.txt"));
    br.mark(100);
    System.out.println(br.readLine());
    br.reset();
    System.out.println(br.readLine());
    br.close();
  }
}

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