How do I send a string to a char array in Java?

Question

String product = Integer.toString(w);

char[] original = String.toCharArray(product);

This is the code I have so far. The error says that I can't use toCharArray on String, but I looked in the documentation, and it is a listed method, so I'm kind of stuck.

it looks like you are trying to do something silly with w. can i ask why you want to get an integer to a char array? — twolfe18
– twolfe18, Commented Nov 2, 2009 at 1:44
I need to reverse the order of a number. Example: 123456 -> 654321 — Catharsis
– Catharsis, Commented Nov 2, 2009 at 1:47

James Black · Accepted Answer · 2009-11-02 01:39:50Z

8

product.toCharArray()

The toCharArray is not a static method, but is a method of a string that already exists, which is why it didn't compile for you.

Here is a longer example:

public class ToCharArrayString {
  public static void main(String args[]) {
    //method converts complete String value to char array type value  
    String str = " einstein relativity concept is still a concept of great discussion";
    char heram[] = str.toCharArray();
    // complete String str value is been converted in to char array data by
    // the method
    System.out.print("Converted value from String to char array is:  ");
    System.out.println(heram);
  }
}

answered Nov 2, 2009 at 1:39

James Black

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Comments

Kennet · Accepted Answer · 2009-11-02 08:21:50Z

1

If the original reason was to reverse a number, my sugguestion is

StringBuffer sb = new StringBuffer(Integer.toString(w)); System.out.println(sb.reverse().toString());

answered Nov 2, 2009 at 8:21

Kennet

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1 Comment

Amos M. Carpenter Over a year ago

I agree with this, given that the comment below the OP says that this is what he was trying to achieve, except I'd always use the more lightweight StringBuilder instead of StringBuffer when there is no concurrency to worry about.

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