file reader line by line in java code example

Example 1: reading in lines from a file java

private ArrayList<String> readFileLines(String filepath) throws FileNotFoundException, IOException{
  File fp = new File(filepath);
  FileReader fr = new FileReader(fp);
  BufferedReader br = new BufferedReader(fr);

  ArrayList<String> lines = new ArrayList<>();
  String line;
  while((line = br.readLine()) != null) { lines.add(line); }

  fr.close();
  return lines;
}

Example 2: java read lines from file

Scanner sc = null;
        try {
            File file = new File("myfile.txt"); // java.io.File
            sc = new Scanner(file);     // java.util.Scanner
            String line;
            while (sc.hasNextLine()) {
              line = sc.nextLine();
              // process the line
            }
          }
          catch(FileNotFoundException e)
          {
              e.printStackTrace();
          }
          finally {
            if (sc != null) sc.close();
          }