Question

Everyone, I’ve been try to solve this since yesterday.

What is the representation of pattern that contain (A-Z)* and (\\p{Punct})* and (0-9)* and (\\s), and all char of the pattern were Uppercase.

i.e,

• PATTERN {001}

• OTHERS PATTERN (002-005)

edit :
just moment ago, i got this patter for question above:

(([A-Z])*|(\\p{Punct})*|([0-9])*|(\\s)*)*

the new problem is getting the uppercase sub String from some String which separated with “|”:

then, I used code look like below :

            String theString = "";
            String theUppercase = "";
            Pattern level5Patter = Pattern.compile("(([A-Z])*|(\\p{Punct})*|([0-9])*|(\\s)*)*\\|");
            Matcher level5Matcher = level5Patter.matcher(strFileContent);
            while(level5Matcher.find()){
                String resultLevel5 = level5Matcher.group();
                if(resultLevel5.toUpperCase().equals(resultLevel5)){
                    System.out.println(resultLevel5);
                }
                else{
                    theString=theString+resultLevel5;
                }
            }

the sub string will look like below :

TITLE OF THIS DATA IS ALWAYS UPPERCASE AND SOMETIME CONTAIN NUMERIC 1.0.0.0.0 EVEN PUNCTUATION {}

The String source is look like below:

Head 1|Head 1.0|Head 1.0.0|Head 1.0.0.0|TITLE OF THIS DATA IS ALWAYS UPPERCASE AND SOMETIME CONTAIN NUMERIC 1.0.0.0.0 EVEN PUNCTUATION {}|first data description sometime contains UPPERCASE and numeric 1010 and punctuation {}|01234|Head 1|Head 1.0|Head 1.0.0|Head 1.0.0.1|TITLE OF THIS DATA IS ALWAYS UPPERCASE AND SOMETIME CONTAIN NUMERIC 1.0.0.1.0 EVEN PUNCTUATION|first data description sometime contains UPPERCASE and numeric 1010 and punctuation {}|56789|

Thanks in advance.

Answer 1

Create a character class and put everything in, that you want to allow

Pattern p = Pattern.compile("^[A-Z0-9\\p{P}\\s]+$");

[A-Z0-9\\p{P}\\s] this is a character class, that allows A-Z, 0-9, Punctuation and Whitespace.

^ is an anchor for the start of the string

$ is an anchor for the end of the string

+ is a quantifier that allows

A more unicode approach would be

^[\\p{Lu}\\p{N}\\p{P}\\s]+$

\\p{Lu} an uppercase letter that has a lowercase variant.

\\p{N} any kind of numeric character in any script.

See here on regular-expressions.info for more information