Can Make Arithmetic Progression From Sequence LeetCode solution in Java

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class Solution {
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  public boolean canMakeArithmeticProgression(int[] arr) {
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    if (arr.length < 1) return false;
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    Arrays.sort(arr);
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    int diff = arr[1] - arr[0];
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    for (int i = 1; i < arr.length - 1; i++) {
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      if (arr[i + 1] - arr[i] != diff) {
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        return false;
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      }
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    }
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    return true;
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  }
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}