How to convert 2d string array into ArrayList??
I have a 2d array of string, how can i covert it to array list???
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depends on how you want to concat them.njzk2– njzk22012-10-22 14:16:12 +00:00Commented Oct 22, 2012 at 14:16
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3 Answers
If you want a full list of elements just do this. Probably there is a simple way
ArrayList<String> list = new ArrayList<String>();
for (int i=0; i < array_limit ; i++)
for (int j=0 ; j < array_limit; j++)
list.add(your_array[i][j]);
2 Comments
Ahmad Abbasi
then how can i relate array itmes?? like how can I find array[2][1]??
maninder singh
@user1756754 if your array is xy then array[2][1]=list.get((y*2)+1)........ that is for any i and j array[i][j]=list.get((yi)+j)
public static ArrayList<String> rowsToString(String[][] data) {
ArrayList<String> list = new ArrayList<String>();
for(int i = 0; i < data.length; i++) {
String row = Arrays.toString(data[i]);
list.add( row.substring(1, row.length()-1) );
}
return list;
}
Comments
Depends on what exactly you want. Try:
for(int i=0;i<a.length;i++){
newList.add(new ArrayList<String>());
for(int j=0;j<a.length;j++){
newList.get(i).add(a[i][j]);
}
}
Then you can access elements for example by:
newList.get(1).get(2);
