i have the following code that won’t compile because of generic problems. It comes

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Asked: May 26, 20262026-05-26T14:06:27+00:00 2026-05-26T14:06:27+00:00

i have the following code that won’t compile because of generic problems. It comes

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i have the following code that won’t compile because of generic problems. It comes from when i try to run the code. The problem is that i must fix the generic issue but i can’t spot it whether i must change something in the class StAlgo or in the method.

public class StAlgo{

//signature selection sort
public <T extends Comparable<T>> int selectionSort(T[] array) {
}

 public static <T extends Comparable<T>> T[] getRandomPermutationOfIntegers(int size) {
      T[] data = (T[])new Comparable[size]; 
      for (Integer i = 0; i < size; i++) {
          data[i] = (T)i;
      }

      // shuffle the array
      for (int i = 0; i < size; i++) {
          T temp;
          int swap = i + (int) ((size - i) * Math.random());
          temp = data[i];
          data[i] = data[swap];
          data[swap] = temp;
      }
      return data;
  }

 public <T extends Comparable<T>> void trySelectionSort(){
      int N = 100, M = 100;  

      for(int i= 0; i < N; i++){
          T[] arrayInts = (T[])new Comparable[i];
          for(int j= 0; j < M; i++){
              arrayInts = getRandomPermutationOfIntegers(i);
              //Collections.shuffle(Arrays.asList(arrayInts));
              selectionSort(arrayInts);
          }
      }
  }
}







//Main class  has the folling code:

    StAlgosa s = new StAlgosa();
    s.trySelectionSort();

I get the following error:

Exception in thread "main" java.lang.Error: Unresolved compilation problem: 
    Bound mismatch: The generic method trySelectionSort() of type StAlgosa is not applicable for the arguments (). The inferred type Comparable<Comparable<T>> is not a valid substitute for the bounded parameter <T extends Comparable<T>>

how do i fix it?

thanks