java - how to convert Vector<Vector<String>> to Object [] []? -

i have dinamical sorter jtable problem is working object [][] data mine data in format

vector<vector<string>> data; 

and guess need cast object

object [] []  

i'm guessing need make double statement iterate , put object variable. can me issue?

with java 7 or earlier, you'd have this:

int n = data.size(); object[][] arr = new object[n][]; (int = 0; < n; i++)     arr[i] = data.get(i).toarray(); 

with java 8 can in 1 line:

object[][] arr = data.stream().map(list::toarray).toarray(object[][]::new);