[Solved] Checking data string fits a 6 digit number format from input file [closed]

by


Yes, you can do it with a regex.

One way to do this is to check if for each row you read, you have digits only, and add a constraint for the number of digits. The digits part can be done pretty easily, using a “/d” while the number of characters to be used is constrained by “{desiredNumber}“.

To better understand regex in Java, use this link 😀

If you still cannot solve it, this is the magic line:

if (!newLine.matches("\\d{6}")) {
    return false;
}

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solved Checking data string fits a 6 digit number format from input file [closed]