Question

I’m trying to compile my project but I get the following error:
“error: type argument Process is not within bounds of type-variable T”

public class Heap<T extends Comparable<T>> {
    // ...
}

public class Process {
    // ...
}

public class HeapDemo{
    public static void main(final String[] args) {      
        Heap<Process> heap = new Heap<Process>(); //error here
    }   
}

The program is a CPU scheduling simulation using heaps, if that helps any.

Answer 1

The reason that you get the error is that Process does not implement Comparable<Process>, a condition that must be met by all classes that you supply as type arguments to Heap<T> because of a type constraint that you placed on your generic type.