I have the printed value of an ArrayList of Strings.
[a, b, c, d]
This will be in String format.
Eg.
String temp = "[a, b, c, d]"
How can I convert this into an ArrayList of String object?
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2What did you try? Please show your code. – BetaRide May 05 '14 at 06:31
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why you have [] ? can you tell me what it means here? – Kick Buttowski May 05 '14 at 06:33
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your question is confusing. – Kick Buttowski May 05 '14 at 06:40
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I have the printed value of an ArrayList
: If the ArrayList = {"a", "b", "c", "d"}, it gets printed as [a, b, c, d]. With this printed list, I want to convert to an ArrayList – user2324943 May 05 '14 at 06:41. So my input is a String temp = "[a, b, c, d]", how can I convert to an ArrayList? -
1Possibly related: http://stackoverflow.com/questions/7488643/java-how-to-convert-comma-separated-string-to-arraylist – vikingsteve May 05 '14 at 06:44
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because it stores the values as the **Objects** . so what do you expect here ? – Santhosh May 05 '14 at 06:44
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@BetaRide: I could hard code the conversion, by splitting with a comma, and reading each element and adding it to the list, I was wondering if a conversion method from String(That represents the sys out value of an ArrayList) to an ArrayList exists – user2324943 May 05 '14 at 06:44
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Yes you can, substring from 1 to n-2 ( remove two braces) and split by comma – coder hacker May 05 '14 at 06:47
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@TejasPatel: any in-built functions? – user2324943 May 05 '14 at 06:49
1 Answers
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Very simple code
String temp = "[a, b, c, d]";
// trim enclosing brackets and then split by comma and space
String[] array = temp.substring(1, temp.length() - 1).split(", ");
List<String> list = new ArrayList<String>();
for (String s : array) {
list.add(s);
}
Braj
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Could you also help me in one thing, similarly, if I have contents of a Stack in a String, and want to reconvert to an Object of Stack type, how could I do that? I would have to read the string in a reverse order? – user2324943 May 05 '14 at 06:52
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Where is the issue? Just code and code to make you perfect. Try to experiment on code. It's very easy. – Braj May 05 '14 at 06:56