up vote 2 down vote favorite

I want to convert a String to Character array but I couldn't make it. I can convert it to char array with toCharArray() method but it doesn't be the same with Character array.

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5  
What do you mean by "doesn't fit with the character array"? – barsju Apr 4 '12 at 6:47
Can you re-word this or articulate a bit more, or perhaps provide a code example? – blackcompe Apr 4 '12 at 6:50
To convert char to Character, use Character.valueOf(mychar). If it is an array, loop each element and convert. – ee. Apr 4 '12 at 6:50
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6 Answers

up vote 14 down vote accepted

Use this String.toCharArray() and then use ArrayUtils.toObject(char[])

String str = "testString";
char[] charArray = str.toCharArray();
Character[] charObjectArray = ArrayUtils.toObject(charArray);
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3  
I wish ArrayUtils is standard in JVMs! – Alvin Apr 4 '12 at 6:58
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up vote 0 down vote

You have to write your own method in this case. Use a loop and get each character using charAt(i) and set it to your Character[] array using arrayname[i] = string.charAt[i].

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up vote 6 down vote

Why not write a little method yourself?

public Character[] toCharacterArray(String s) {
   if (s == null) {
     return null;
   }
   Character[] array = new Characer[s.length()];
   for (int i = 0; i < s.length(); i++) {
      array[i] = new Character(s.charAt(i));
   }

   return array;
}
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+1 for Character[] array = new Characer[s.length()]; – Ankit Oct 21 '12 at 10:33
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up vote 2 down vote

String#toCharArray returns an array of char, what you have is an array of Character. In most cases it doesn't matter if you use char or Character as there is autoboxing. The problem in your case is that arrays are not autoboxed, I suggest you use an array of char (char[]).

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up vote 0 down vote

another way to do it.

String str="I am a good boy";
    char[] chars=str.toCharArray();

    Character[] characters=new Character[chars.length];
    for (int i = 0; i < chars.length; i++) {
        characters[i]=chars[i];
        System.out.println(chars[i]);
    }
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up vote 1 down vote

I hope the code below will help you.

String s="Welcome to Java Programming";
char arr[]=s.toCharArray();
for(int i=0;i<arr.length;i++){
    System.out.println("Data at ["+i+"]="+arr[i]);
}

It's working and the output is:

Data at [0]=W
Data at [1]=e
Data at [2]=l
Data at [3]=c
Data at [4]=o
Data at [5]=m
Data at [6]=e
Data at [7]= 
Data at [8]=t
Data at [9]=o
Data at [10]= 
Data at [11]=J
Data at [12]=a
Data at [13]=v
Data at [14]=a
Data at [15]= 
Data at [16]=P
Data at [17]=r
Data at [18]=o
Data at [19]=g
Data at [20]=r
Data at [21]=a
Data at [22]=m
Data at [23]=m
Data at [24]=i
Data at [25]=n
Data at [26]=g
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