gistfile1.java

public boolean isEquals(File file1, File file2) {
  FileInputStream fis1 = null;
  FileInputStream fis2 = null;
  try {
    byte[] ba1 = new byte[(int) file1.length()];
    byte[] ba2 = new byte[(int) file2.length()];
    fis1 = new FileInputStream(file1);
    fis1.read(ba1);
    fis2 = new FileInputStream(file2);
    fis2.read(ba2);
    return Arrays.equals(ba1, ba2);
  } catch (FileNotFoundException e) {
    e.printStackTrace();
  } catch (IOException e) {
    e.printStackTrace();
  } finally {
    try {
      if (fis1 != null) {
        fis1.close();
      }
      if (fis2 != null) {
        fis2.close();
      }
    } catch (Exception e) {
      //ignore
    }
  }
}