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Strange Integer.parseInt exception thrown

Exception in thread "Thread-2" java.lang.NumberFormatException: for input line: "3"

int test = Integer.parseInt(result[0]);

This is the error I get when I try to convert "3" to an integer. Well, I get this “3” through the RS-232 port, so maybe that is what causes the error.

If anyone knows what might be causing this, it will be appreciated.

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2 answers

What is the data type of the result [0]? If this is a line, are you sure there are no spaces or new lines around it?

Try result[0].trim()

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Take a look at the char values ​​of result[0] when this happens. Perhaps this “3” is not really an ASCII character “3”, but some weird Unicode character that looks just like 3.

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Source: https://habr.com/ru/post/1304824/

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