How to convert a string into a List, String Array into a List or Char Array into a List?

Conversion of a String into a List, Conversion of a Char array into a List or Conversion of a String array into a List.

package com.gaurav.conversion.utility;

import java.util.ArrayList;
import java.util.List;


public class ConversionUtilityMethods {
   

   //How to convert a string into a List?

    /** This is the utility method to convert a string into a List */
    public static List<Character> string2List(String stringData) {
        List<Character> characterList = new ArrayList<Character>();     
        for(int i = 0; i<stringData.length();i++){
            characterList.add(stringData.charAt(i));
        }
        return characterList;
    }
   

    //How to convert a char array into a List?

    /** This is the utility method to convert a char array into a List */
    public static List<Character> charArray2List(char[] charArray) {
        List<Character> characterList = new ArrayList<Character>();     
        for(int i = 0; i<charArray.length;i++){
            characterList.add(charArray[i]);
        }
        return characterList;
    }
   

     //How to convert a string array into a List?

    /** This is the utility method to convert a string array into a List */
    public static List<String> StringArray2List(String[] strArray){
        List<String> stringLst = new ArrayList<String>();
        for (String s : strArray) {
            stringLst.add(s);
        }
        return stringLst;
    }
   
    public static void main(String args[]){
        String strData = "GAURAV";
        List<Character> characterList = new ArrayList<Character>(0);
        /** This is the invocation of String to List conversion method */
        characterList = string2List(strData);
        System.out.println("***********************************");
        System.out.println("character list size When String is passed to convert into List - "+characterList.size());
        for(Character character:characterList){
            System.out.println("Elements are-"+character);
        }
       
        String strCharArrayData = "ARYANGAURAV";
        char[] charArray = strCharArrayData.toCharArray();
        List<Character> charList = new ArrayList<Character>(0);
        /** This is the invocation of Char array to List conversion method */
        charList = charArray2List(charArray);
        System.out.println("***********************************");
        System.out.println("char list size is When char array is passed to convert into List - "+charList.size());
        for(Character character:charList){
            System.out.println("Elements are-"+character);
        }
       
        String[] strArray = {"K","U","M","A","R","G","A","U","R","A","V"};
        List<String> stringList = new ArrayList<String>();
        /** This is the invocation of String array to List conversion method */
        stringList = StringArray2List(strArray);
        System.out.println("***********************************");
        System.out.println("String list size When String Array is passed to convert into List - "+stringList.size());
        for(String str:stringList){
            System.out.println("String List elements are - "+str);
        }
       
       
    }
}

Result:-


***********************************
character list size When String is passed to convert into List - 6
Elements are-G
Elements are-A
Elements are-U
Elements are-R
Elements are-A
Elements are-V
***********************************
char list size is When char array is passed to convert into List - 11
Elements are-A
Elements are-R
Elements are-Y
Elements are-A
Elements are-N
Elements are-G
Elements are-A
Elements are-U
Elements are-R
Elements are-A
Elements are-V
***********************************
String list size When String Array is passed to convert into List - 11
String List elements are - K
String List elements are - U
String List elements are - M
String List elements are - A
String List elements are - R
String List elements are - G
String List elements are - A
String List elements are - U
String List elements are - R
String List elements are - A
String List elements are - V