java - How to merge two corresponding values of two different variables in arraylist?

Question

I want to merge two corresponding values of two different variables with comma separator in a row :

like Plate Numbers(Output) : MH 35353, AP 35989, NA 24455, DL 95405.

There is two different variables one is plate State and another is plate Number, I want to merge them together with their corresponding values like 1st values of plate State with 1st value of plate Number after that comma then so on..

I tried this code snippet but didn't work :

ArrayList<String> 
        list1 = new ArrayList<String>(); 

        list1.add("MH"); 
        list1.add("AP");
        list1.add("NA ");  
        list1.add("DL"); 

ArrayList<String> 
        list2 = new ArrayList<String>(); 

        list2.add("35353"); 
        list2.add("35989");
        list2.add("24455");
        list2.add("95405");

list1.addAll(list2); 

question from:https://stackoverflow.com/questions/65915973/how-to-merge-two-corresponding-values-of-two-different-variables-in-arraylist

Answer 1

use this :

 ArrayList<String> 
            list1 = new ArrayList<String>(); 
    
            list1.add("MH"); 
            list1.add("AP");
            list1.add("NA ");  
            list1.add("DL"); 
    
    ArrayList<String> 
            list2 = new ArrayList<String>(); 
    
            list2.add("35353"); 
            list2.add("35989");
            list2.add("24455");
            list2.add("95405");
    
     Iterator iterable = list2.iterator();
            List<String> list3 =list1.stream()
                 .map(x->{
                    x= x+" "+((String) iterable.next());
                    return x;})
                 .collect(Collectors.toList());

     String output = String.join(", ", list3);
                   System.out.println(output);