Why is there an error in generics when sorting an array?

Question

You need to write an array sort. But there is an error "Operator '>' cannot be applied to 'T', 'T'" and "Incompatible types. Found: 'T[]', required: 'T'". What is the problem, why is it?

public class MySortArray <T extends Comparable <T>>{

    public T SortArray(T[] array) {
        int temp;
        for(int i = 0; i < array.length - 1; i++) {
            if(array[i] > array[i+1]) {

            }
        }
        return array;
    }
}

Bohemian · Accepted Answer · 2022-03-03 16:41:36Z

1

Java does not support operator overloading.

You must use the compareTo() method of Comparable:

if (array[i].compareTo(array[i+1]) > 0)

answered Mar 3, 2022 at 16:41

Bohemian♦

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