How to convert array to char array?

Question

public static void main(String[] args) throws IOException {

    String token1 = "";
    Scanner inFile = new Scanner(new File(filename));
    List<String> temps = new LinkedList<String>();

    while (inFile.hasNext()) {
      token1 = inFile.next();
      temps.add(token1);
    }

    inFile.close();

    String[] tempsArray = temps.toArray(new String[0]);

    for (String hole : tempsArray) {
        System.out.println(hole);
    }

I read my file to array, but to continue I need to convert this array to char array. Thanks in advance.

For each String in tempsArray: tempArrayString.toCharArray();. Now, why would you need to convert it to char[]? — Luiggi Mendoza
– Luiggi Mendoza, Commented Jun 4, 2014 at 20:50
I am trying to finish this : stackoverflow.com/questions/24036201/… — user3142247
– user3142247, Commented Jun 4, 2014 at 20:51
Let's say your string array is ["hello", "world"]. What would you want to transform it to? — JB Nizet
– JB Nizet, Commented Jun 4, 2014 at 20:52
So your real problem is how to read the data in a text file to create a maze structure type (or similar) in your application to evaluate it. — Luiggi Mendoza
– Luiggi Mendoza, Commented Jun 4, 2014 at 20:59

Luiggi Mendoza · Accepted Answer · 2014-06-04 21:13:47Z

2

It would be easier to start with List<char[]> variable to shorten the code:

Scanner inFile = new Scanner(new File(filename));
List<char[]> temps = new ArrayList<char[]>();
while (inFile.hasNext()) {
    temps.add(inFile.nextLine().toCharArray());
}
inFile.close();
char[][] wholeData = temps.toArray(new char[0][]);
//just to show the data
System.out.println(Arrays.deepToString(wholeData));

answered Jun 4, 2014 at 21:13

Luiggi Mendoza

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Comments

caskey · Accepted Answer · 2014-06-04 21:08:25Z

0

The toCharArray() method of string will return an array of char[] the length of the string.

answered Jun 4, 2014 at 21:08

caskey

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1 Comment

Luiggi Mendoza Over a year ago

This should be a comment rather than an answer.

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