Java - Pattern.compile() doesn't work with getting a regex string from object

Question

I'm trying to use a regex to see if an url matches the criteria I have set for it. The problem I have is that I want the regex to be defined beforehand (in the frontend) and saved in aan object. I suspect that's where it goes wrong and it won't be able to compile the Pattern correctly. Let me give an example:

String url = "https://www.website-example.com/regex/80243/somemorechars"

if (Pattern.compile("regex/\\d{5}").matcher(url).find()) {
    System.out.println("Url found");
}

The above example will print "Url found" and there won't be any problems. Now for the example that gives me the problems:

// Imagine the below object that will be created at my Angular frontend, send to the backend and saved:

@Entity()
@Table(name = "REGEXOBJ")
public class RegexObj{

    @Id
    @GeneratedValue(generator = "regex_gen")
    @TableGenerator(name = "regex_gen", table = "ama_sequence", pkColumnValue = "Regex")
    @Column(name = "ID")
    private Long id;

    // some other fields I need

    @Column(name = "REGEX", nullable = false)
    private String regex;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    // getters and setters for the other fields

    public String getRegex() {
        return regex;
    }

    public void setRegex(String regex) {
        this.regex = regex;
    }
}
// =================================================== //

public boolean checkUrl(RegexObj regexObj) {
    String url = "https://www.website-example.com/regex/80243/somemorechars"

    if (Pattern.compile(regexObj.getRegex()).matcher(url).find()) {
        System.out.println("Url found");
    }
}

Now the url won't be matched to the regex, problably because the String is 'flat' and the '\\d{5}' part won't be seen as regex anymore. Is there a way around this to make it work?

EDIT - Added a simplified version of the class I use

Answer 1

I fixed the issue. The problem occured in fact while saving the object that was sent from the frontend. Where I set the string as "regex/\\d{5}" via an input field at the frontend it got saved as "regex/\\\\d{5}". Changing it to "regex/\d{5}" in my input field fixed the issue!