The given statement is true, that attempting to extract more tokens from a string tokenizer object than there are will result in an error.
In Java, the String Tokenizer class is used to split a string into tokens. A String Tokenizer object internally keeps track of where it is in the string to be tokenized. Some procedures move this current location past the characters that have been processed.
An application can use the string tokenizer class to split a string into tokens. The tokenization method used by the Stream Tokenizer class is substantially easier. The String Tokenizer methods make no distinction between identifiers, numbers, and quoted strings, and they do not recognize or skip comments.
Therefore, it is true.
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