Practice›Java Fundamentals›Module 6. Input, Files & Error Handling›(Optional) 6.4 Writing files

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(Optional) 6.4 Writing files — join with commas

Total: 0 / 3 pts

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Task

Fill in joinCsv so that it returns the values joined by commas — with no comma before the first one and none after the last.

The program prints a,b,c.

Your solution

public class Main {

    public static String joinCsv(String[] cols) {
        // join with commas

    }

    public static void main(String[] args) {
        String[] cols = {"a", "b", "c"};
        System.out.println(joinCsv(cols));
    }
}

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