This might have been asked before, but I spent some time looking, so here's what I have. I have a string containing an array:
'["thing1","thing2"]'
I would like to convert it into an actual array:
["thing1","thing2"]
How would I do this?
3
-
make use of regex to parse the contents of string and then insert them into arrayRishi– Rishi2016-03-10 23:57:27 +00:00Commented Mar 10, 2016 at 23:57
-
2or you can use json deserializelibertylocked– libertylocked2016-03-10 23:58:27 +00:00Commented Mar 10, 2016 at 23:58
-
Possible duplicate: Java convert special string to array of array - Stack Overflow (I voted as too bload before searching...)MikeCAT– MikeCAT2016-03-10 23:58:59 +00:00Commented Mar 10, 2016 at 23:58
Add a comment
|
2 Answers
You could create a loop that runs through the whole string, checking for indexes of quotes, then deleting them, along with the word. I'll provide an example:
ArrayList<String> list = new ArrayList<String>();
while(theString.indexOf("\"") != -1){
theString = theString.substring(theString.indexOf("\"")+1, theString.length());
list.add(theString.substring(0, theString.indexOf("\"")));
theString = theString.substring(theString.indexOf("\"")+1, theString.length());
}
I would be worried about an out of bounds error from looking past the last quote in the String, but since you're using a String version of an array, there should always be that "]" at the end. But this creates only an ArrayList. If you want to convert the ArrayList to a normal array, you could do this afterwards:
String[] array = new String[list.size()];
for(int c = 0; c < list.size(); c++){
array[c] = list.get(c);
}
Comments
You can do it using replace and split methods of String class, e.g.:
String s = "[\"thing1\",\"thing2\"]";
String[] split = s.replace("[", "").replace("]", "").split(",");
System.out.println(Arrays.toString(split));
1 Comment
Thilo
Seems fragile. What if there are escaped special characters in the strings? Better to use a JSON parser.