Java convert string to list of characters

John D K -

Convert string to list of strings in Java

If you want to convert any string into a list of characters using java you can use method split() with parameter - empty quotes:

String word = "Java rulez";
System.out.println(Arrays.asList(word.split("")));

result:

[J, a, v, a, , r, u, l, e, z]

Convert list of strings to string

If you want to do the reverse operation and the convert list into string then you can use method: String.join("",)

String word = "Java rulez";
List<String> list = Arrays.asList(word.split(""));
System.out.println(list);
String wordnew = String.join("", list);
System.out.println(wordnew);

result:

[J, a, v, a, , r, u, l, e, z]
Java rulez

Example using conversion string to list

Below you can find a program which show how to use conversion from string to list and the reverse in order to check if two words are anagrams:

public static void main(String[] args) {
    System.out.println(isAnagram("face", "cafe"));
    System.out.println(isAnagram("face", "caffe"));
}

public static Boolean isAnagram(String word1, String word2){
    List<String> listWord1 = new ArrayList<>(Arrays.asList(word1.split("")));
    List<String> listWord2 = new ArrayList<>(Arrays.asList(word2.split("")));
    
    Collections.sort(listWord1);
    Collections.sort(listWord2);
    
    word1 = String.join("", listWord1);
    word2 = String.join("", listWord2);
    
    //return listWord1.equals(listWord2);
    return word1.equals(word2);
    //return word1 == word2 ; // not working because == tests for reference equality
}

References