Question

How to convert ArrayList to string in Java

Answer 1

import java.util.ArrayList;
 
public class MyClass {
    public static void main(String args[]) {
        ArrayList<String> al = new ArrayList<String>();
   
        al.add("java");
        al.add("c");
        al.add("php");
        al.add("python");
        al.add("c++");
         
        String str = String.join(" ", al);
         
        System.out.println(str);
    }
}
   
  
  
   
/*
run:
  
java c php python c++
  
*/

 

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Answer 2

import java.util.ArrayList;
import java.util.Arrays;
 
public class MyClass {
    public static void main(String args[]) {
        ArrayList al = new ArrayList(Arrays.asList("c#", "c++", "c", "java", "python"));
            
        String str = String.join(" ", al);
     
        System.out.println(str);
    }
}
    
    
    
    
    
/*
run:
    
c# c++ c java python
    
*/

 

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