Urgent: Phone Number Regular Expression Validation

String pattern = "[\\d-0+]{,15}";

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I try to test it on my Java application with the code below:-

private static final Pattern phonePattern = Pattern.compile("[\\d-()+]\\{,15\\}");


However, the input (listed below) failed to pass the pattern.

56100
07-5767880
713-434-7798
+6423412555

Please advise.

Remove the backslashes before each curly brace. I didn't not put those in my pattern for a reason  ; )

If I remove the backslashes before each curly brace, the following runtime error will be appeared:-


java.util.regex.PatternSyntaxException: Illegal repetition near index 10
[\d-()+\s]*{,15}

Any thoughts?
Thanks.

Take the star out. Also, I need to ammend the pattern slightly:

String pattern = "[\\d()+-]{,15}";

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Still having the same error returned:-

java.util.regex.PatternSyntaxException: Illegal repetition near index 7
[\d()+-]{,15}
       ^
      at java.util.regex.Pattern.error(Pattern.java:1924)
      at java.util.regex.Pattern.closure(Pattern.java:3104)
      at java.util.regex.Pattern.sequence(Pattern.java:2101)
      at java.util.regex.Pattern.expr(Pattern.java:1964)
      at java.util.regex.Pattern.compile(Pattern.java:1665)
      at java.util.regex.Pattern.<init>(Pattern.java:1337)
      at java.util.regex.Pattern.compile(Pattern.java:1022)

What do you think?

private static final Pattern phonePattern = Pattern.compile("[\\d-()+\\s]{6,15}");

Above is working in my case after testing.

Thanks.