How can I match a Java regex on numbers and slashes (image resolution in a file path)
java, regex
Solution
You need to use find method..
`matches` would try to match the string exactly.
`find` could match in between the string provided you don't use `^`,`$`
See pattern.matcher() vs pattern.matches() for more info
So,your code would be like
boolean isValid=Pattern.compile(yourRegex).matcher(input).find();
But if you want to extract:
String res="";
Matcher m=Pattern.compile(yourRegex).matcher(input);
if(m.find())res=m.group();
Problem
I'm just trying to create a regex to recognise image resolutions in a file path. An example input string could be something like "/path/to/file/2048x1556/file.type". And all i want to be able to match on is the "/2048x1556" bit. I should not that the numbers of the resolutions can change, but will always be either 3 or 4 characters in length. I've tried so far using: ``` Pattern.matches("/\\d+x\\d+", myFilePathString) ``` An what feels like about 100 variations on that... I'm new to regex's so I'm sure it's something simple that I'm overlooking but I just can't seem to figure it out. Thanks in advance, Matt.