For example:

void unaryMinus(int i) {
    int x = - -i;
  }

The following quick fixes are suggested here:

• Remove - operators before the i variable:

  void unaryMinus(int i) {
      int x = i;
    }

• Replace - operators with the prefix decrement operator:

  void unaryMinus(int i) {
      int x = --i;
    }

Another example:

void unaryMinus(int i) {
    i += - 8;
  }

After the quick-fix is applied:

void unaryMinus(int i) {
    i -= 8;
  }