A DESCRIPTION OF THE PROBLEM :
Lower bound checks are not happening properly.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :

import java.util.List;

class Animal {
}

class Dog extends Animal {
}

class Cat extends Animal {
}

public class TestLower {

public static void main(String[] args) {
System.out.println("start");

//The below line is throwing error if i pass new Object()/any other object
//List<? extends Animal> lo= List.of(new Animal(), new Cat(), new Dog(), new Object());

List<? extends Animal> lo = List.of(new Animal(), new Cat(), new Dog());

// Upper bound looks fine.
Animal a = lo.get(0);
// Throws Error...Good..
// lo.add(new Dog());

//Lower bound has some issues, its accepting String,Integet,Object while adding it list.of() method.
//I think it has to throw error like in upper bound if we add not related objects.
List<? super Animal> lo2 = List.of(new Animal(), new Cat(), new Dog(), new Object(), new String(),
new Integer(0));
// lo2.add(new Dog());//Throws Error...Good..
// lo2.add(new String());//Throws Error...Good..
System.out.println("end");

}

}


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
for lower bound generics it should throw error like upper bound.
ACTUAL -
lowerbound is accepting any object from List.of method.

---------- BEGIN SOURCE ----------

import java.util.List;

class Animal {
}

class Dog extends Animal {
}

class Cat extends Animal {
}

public class TestLower {

public static void main(String[] args) {
System.out.println("start");

//The below line is throwing error if i pass new Object()/any other object
//List<? extends Animal> lo= List.of(new Animal(), new Cat(), new Dog(), new Object());

List<? extends Animal> lo = List.of(new Animal(), new Cat(), new Dog());

// Upper bound looks fine.
Animal a = lo.get(0);
// Throws Error...Good..
// lo.add(new Dog());

//Lower bound has some issues, its accepting String,Integet,Object while adding it list.of() method.
//I think it has to throw error like in upper bound if we add not related objects.
List<? super Animal> lo2 = List.of(new Animal(), new Cat(), new Dog(), new Object(), new String(),
new Integer(0));
// lo2.add(new Dog());//Throws Error...Good..
// lo2.add(new String());//Throws Error...Good..
System.out.println("end");

}

}

---------- END SOURCE ----------

FREQUENCY : always