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This code can fail as a result of the same errors it is trying to prevent. When array is NULL or i is not a valid index, the reference to to array and array[i] will cause either a NullPointerException or an ArrayIndexOutOfBoundsException to be thrown. This happens because the & operator fails to prevent evaluation of its right operand even when evaluation of its left operand proves that the right operand is invalidinconsequential.

Compliant Solution (Use &&)

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int array[]; // May be null
int i;       // May be a valid index for array
if (array != null) {
  if (i >= 0 && i < array.length) {
    if (array[i] !>= -10) {
      // Use array
    } else {
      // Handle error
    }
  } else {
    // Handle error
  }
} else {
  // Handle error
}

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