Question

How to join a collection into a string in Java

Answer 1

import java.util.Arrays;
import java.util.Collection;
import java.util.stream.Stream;
import java.util.stream.Collectors;
  
public class MyClass {
    public static void main(String args[]) {

        Collection<String> co = Arrays.asList("java", "c", "c++", "rust");
        
        String result = co.stream().collect(Collectors.joining(", "));

        System.out.println(result);
    }
}
  
  
  
  
/*
run:
  
java, c, c++, rust
  
*/

 

70+ SQL courses for beginners and professionals