java arraylist ÎÊÌâ

if (e.getSource() == btnIdSelect) {
    String number = txtIdSelect.getText();
    try {
    File file = new File("D:\\test.txt");
    FileInputStream fis = new FileInputStream(file);
    InputStreamReader isr = new InputStreamReader(fis);
    BufferedReader br = new BufferedReader(isr);

    while (br.ready()) {
      String line = br.readLine();
      ArrayList al = new ArrayList();
      if (line.contains(number)) {
      al.add(line);
      System.out.println(al);
      }
      String s3 = al.toString();
      String[] s4 = s3.split("\\;");
     
      for(int i = 0;i <s4.length;i++){
      System.out.println(s4[i]);
      }
      }

    br.close();
    isr.close();
    fis.close();

    } catch (FileNotFoundException e1) {
    e1.printStackTrace();
    } catch (IOException e2) {
    e2.printStackTrace();
    }
  }
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