JAVA - Error while comparing Object items

Question

I have the following code

set1.forEach( k -> {
   for (String s : set2) {
        if(s.split(";")[0].equals(k){
            //do something
        }
    }
...

but I have this error

k cannot be resolved to a variable

Is there a way to read this variable?

Thanks

Lambda expressions were introduced in JDK 8, probably you are using an earlier version. — Adit A. Pillai
– Adit A. Pillai, Commented Dec 16, 2016 at 12:07
WFM: ideone.com/LT5MKR can you post a minimal reproducible example? — user180100
– user180100, Commented Dec 16, 2016 at 12:07

Rajashekhar · Accepted Answer · 2016-12-16 12:10:53Z

2

You missed one paranthesis after k. You should have two closed paranthesis as below near equals

    Set<String> set1 = new HashSet<>();

    Set<String> set2 = new HashSet<>();

    set1.forEach((k)-> {
        for (String string : set2) {
            if(string.split(":")[0].equals(k)){
                //do something
            }

        }
    });

edited Dec 16, 2016 at 12:10

answered Dec 16, 2016 at 12:07

Rajashekhar

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2 Comments

Fab Over a year ago

Solved. if statement was not closed. The error was about variable k, but the problem was a missing parenthesis

Rajashekhar Over a year ago

@Fab Yes, you missed paranthesis of if

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