Is there a simpler approach by which I can convert Pair to 2 dimensional array?
Here is what I have tried:
public int[][] func() {
List<Pair<Integer, Integer>> pairs = new ArrayList<>();
//this is example value
pairs.add(new Pair<>(1,2));
pairs.add(new Pair<>(2,3));
pairs.add(new Pair<>(3,4));
//I want to make array same size of pair's
int[][] arr = new int[pairs.size()][2];
for(int i =0 ; i < pairs.size(); i++) {
arr[i][0] = pairs.get(i).getKey();
arr[i][1] = pairs.get(i).getValue();
}
return arr;
}
With Streams:
int[][] arr = pairs.stream()
.map(pair -> new int[] {pair.getKey(),pair.getValue()})
.toArray(int[][]::new);
BTW, instead of using a javafx Pair class, perhaps it would be better to use the more standard java.util.AbstractMap.SimpleEntry class.
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