Java regex pattern matching

Question

I want to match the following string pattern for my code. the string value is fixed as below:

630512-07-5847

Pattern p = Pattern.compile("(\\d{6,6})-(\\d{2,2})-(\\d{4,4})");

I've tried the code above, however, when it has more number such as "630512312-07-5847" , it still return true

Answer 1

Are you tried actually?

public class Test {
    public static void main(String[] args) {
        System.out.println("630512312-07-5847".matches("(\\d{6,6})-(\\d{2,2})-(\\d{4,4})"));
    }
}

the result is false, bad question

Answer 2

try

^\\d{6}-\\d{2}-\\d{4}$

This will make sure the if the match begins and end with the entire string,

so

• 630512-07-5847 - OK
• 630512-07-58472 - NOT OK
• 1630512-07-5847 - NOT OK