Illegal escape character netbeans

I have a programming assignment which requires the code to be single line(shortest code). I did it, but for some reason, I get the error "Illegal Escape Character". Some people say claim that it will not do the same in eclipse. However, I have to turn in NetBeans project.

This is my code:

public class ShortestCode {
    public static void main(String[] args) {
        System.out.println(JOptionPane.showInputDialog("Enter your email address").matches(".*@.*\..*") ? "Address Appears Valid" : "Address is Invalid");
    }
}

What can I do so it is acceptable by NetBeans IDE? All the error saying is "Illegal escape character." and does not provide with any other hints.

Jon Skeet
people
quotationmark

This, this is the problem:

matches(".*@.*\..*")

I suspect you want a regular expression with exactly this pattern:

.*@.*\..*

But you're writing it as a Java string literal, so you need to escape the backslash:

matches(".*@.*\\..*")

The compiler is complaining because \. isn't a valid escape sequence.

people

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