JsonSyntaxException extends RuntimeException { @Override public String getMessage() { return super.getMessage() + " on row " + row + " col " + col + "."; } JsonSyntaxException();  JsonSyntaxException(String message);  JsonSyntaxException(AtomicLong row, AtomicLong col);  JsonSyntaxException(AtomicLong row, AtomicLong col, Throwable cause);  JsonSyntaxException(AtomicLong row, AtomicLong col, String message);  JsonSyntaxException(AtomicLong row, AtomicLong col, String message, Throwable cause); @Override String getMessage();  }
@Test void getMessage() { assertNotNull(new JsonSyntaxException().getMessage()); }