Always get an error

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,
#1

Here is my project promtp:

Write the following method that splits a string into substrings using delimiter characters.
public static ArrayList split(String s, String delimiters);

Here are my errors:
Exception in thread “main” java.lang.Error: Unresolved compilation problem:
Type mismatch: cannot convert from List to ArrayList

    at Problem1.split(Problem1.java:19)
    at Problem1.main(Problem1.java:13)

Here is my code:

import java.util.*;
public class Problem1 {
   public static void main(String[] args){
       //make a scanner
       Scanner sc = new Scanner(System.in);
       //prompt user to enter a string
       System.out.println("Enter a string: ");
       String s = sc.nextLine();
       //prompt user to enter delimiters
       System.out.println("Enter delimeters: ");
       String delimiters = sc.nextLine();

      split(s, delimiters);

   }
   //split method
   public static ArrayList<String> split(String s, String delimiters){
        String[] array = s.split(delimiters);
        ArrayList<String> list = Arrays.asList(array);
        System.out.println(list);
        
    



   }    
}

no matter what I do I get the same error. Please help.

#2

You might try looking here: https://www.geeksforgeeks.org/conversion-of-array-to-arraylist-in-java/

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#3

So this tells me how to make an array into an arraylist, but I’m pretty sure I already did that?

String[] array = s.split(delimiters);
        ArrayList<String> list = Arrays.asList(array);

so uh, why the error?

#4

Check the link again, your code is not in the same exact format… sample run of your program (so far):
Screen Shot 2020-11-06 at 6.43.37 PM

#5

@arianna.pogact you have issue with array to ararylist conversion . Because Arrays.asList() method return List not Arraylist . I have improve your code as below . Please visit once these ways to convert array to list
How to convert array to arraylist

public static List split(String s, String delimiters){
String array = s.split(delimiters);
List list = Arrays.asList(array);
System.out.println(list);
return list;
}

1 Like