Returns the character content of this file object, if available. Any byte that cannot be decoded will be replaced by the default translation character. In addition, a diagnostic may be reported unless ignoreEncodingErrors is true.

Parameters:

ignoreEncodingErrors

ignore encoding errors if true

Returns:  a CharSequence if available; null otherwise

Exceptions:

IllegalStateException		if this file object was opened for writing and does not support reading
UnsupportedOperationException		if this kind of file object does not support character access
IOException		if an I/O error occurred