How can I edit the resulting String?

John Published at Dev

John

If the exception occurs I need to cut the resulting String by a value obtained in another method.

I have a resulting method :

private String generateSomeName() {
        String basicProjectName = "Sth_" + method1();
        return basicProjectName + "_" + "X" ;
    }

    private String method1() {
        try {
            Class.getNumber();  //returns String1 
        } catch (Exception e) {
            log.warn("Unable to get this Number", e);
        }
        return "";            
    }

My problem is that when everything works I will get the proper format of the String Sth_String1_X

But if there is an exception and I will get the empty String "" (without String1) my result is:

Sth__X (with double _)

And I need it to be:

Sth_X with only one _

Any tips how to handle this?

user10386912

Assuming java 8 is used, an option would be to use Optional to add the _ before the result returned by the method1 method only if the result is not null and non empty

private String generateSomeName() {
    String basicProjectName = "Sth" + Optional.ofNullable(method1())
                                              .filter(s -> s.length() > 0)
                                              .map(s -> "_" + s)
                                              .orElse("");
    return basicProjectName + "_X" ;
}

private String method1() {
    try {
        Class.getNumber();  //returns String1 
    } catch (Exception e) {
        log.warn("Unable to get this Number", e);
    }
    return "";            
}

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