Maximum Units on a Truck LeetCode solution in Java

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class Solution {
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  public int maximumUnits(int[][] boxTypes, int truckSize) {
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    Arrays.sort(boxTypes, Comparator.comparingInt(o -> -o[1]));
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    int ans = 0, i = 0, n = boxTypes.length;
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    while (i < n && truckSize > 0) {
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      int maxi = Math.min(boxTypes[i][0], truckSize);
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      ans += maxi * boxTypes[i][1];
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      i++;
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      truckSize -= maxi;
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    }
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    return ans;
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  }
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}