Take a String array and split with ","

Question

I need help with splitting a String array at each , and make the result a new string array.

String [] studentName ={"Thui Bhu, 100, 90, 80, 100, 89, 99, 88"}

Convert to:

String []studentName2={"Thui Bhu", "100", "90", "80", "100" "89", "99", "88"}

`studentName[0].split(",");` – Avinash Raj Mar 21 '15 at 02:22 — Avinash Raj, Mar 21 '15 at 02:22
do you need to insert the quotes? – Michael Queue Mar 21 '15 at 02:25 — Michael Queue, Mar 21 '15 at 02:25

score 2 · Answer 1 · answered Mar 21 '15 at 02:25

2

specify the index of the array element where the splitting going to be occur.

    String [] studentName ={"Thui Bhu, 100, 90, 80, 100, 89, 99, 88"};
    System.out.println(Arrays.toString(studentName[0].split(",")));

answered Mar 21 '15 at 02:25

Avinash Raj

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Hi Avinash, I need to return an array, not a string. I think toString() returns a String. – Kelvin Chen Mar 21 '15 at 03:41
`studentName[0].split(",")` returns an array. You can't print an array directly, so that i used `Arrays.toString` – Avinash Raj Mar 21 '15 at 04:12
this is what i did: studentName[i]=studentName[i].split(",") but i get the error message: "Type mismatch: cannot convert from String[] to String" – Kelvin Chen Mar 21 '15 at 04:32
try `studentName = studentName[0].split(",");` – Avinash Raj Mar 21 '15 at 04:36

score 0 · Answer 2 · answered Mar 21 '15 at 02:30

You could use a regular expression ,\\s* to split on a comma and consume any (optional) white-space like

String[] studentNames = { "Thui Bhu, 100, 90, 80, 100, 89, 99, 88" };
for (String studentName : studentNames) {
    String[] arr = studentName.split(",\\s*");
    System.out.println(Arrays.toString(arr));
}

Junaid · Answer 3 · 2015-03-21T02:38:04.863

StringTokenizer implementation would be something like that:

StringTokenizer str = StringTokenizer(yourString, ",");

while(str.hasMoreTokens())
{
   //whatever you want to do here
}

Note: It is a legacy class and its use is discouraged.

Recommended way: Using split method of string is the recommended way.
Following is the example:

String[] result = "this,is,a,test".split(",");
     for (int x=0; x<result.length; x++)
         System.out.println(result[x]);

Output:
this
is
a
test

Take a String array and split with ","

3 Answers3