I've got an Array in an ArrayList, and I want to access each element in the Array individually to use them. My code doesn't work:
ArrayList<int[]> freeSpot = new ArrayList<int[]>();
for (int x = 0; x < 3; x++) {
for (int y = 0; y < 3; y++) {
freeSpot.add(new int[]{x, y});
}
}
System.out.println(freeSpot.get(int[0]));
Hope somebody can help! Thanks.
Slightly different approach:
List<Integer[]> freeSpot = new ArrayList<>();
for (int x = 0; x < 3; x++) {
for (int y = 0; y < 3; y++) {
freeSpot.add(new Integer[]{x, y});
}
}
for(Integer[] entry : freeSpot) {
System.out.println("x: " + entry[0] + " y: " + entry[1]);
}
You should do the following:
System.out.println(freeSpot.get(x)[y]);
where x if the index of the List and y the index of the array.
For example:
to get the first element of the array of the first element of the list :
System.out.println(freeSpot.get(0)[0]);
to get the second element of the array of the first element of the list :
System.out.println(freeSpot.get(0)[1]);
freeSpot.get(0)?System.out.println(Arrays.toString(freeSpot.get(0)));System.out.println(freeSpot.get(0)[0]);