Author Question: Analyze the following code:public class Test1 { public Object max(Object o1, Object o2) {if ... (Read 121 times)

cherise1989 · **on:** May 6, 2020

Question 1

Suppose A is an interface, B is a concrete class with a default constructor that implements A. Which of the following is correct?
◦ B b = new B();
◦ B b = new A();
◦ A a = new A();
◦ A a = new B();

Question 2

Analyze the following code:

public class Test1 {
public Object max(Object o1, Object o2) {

if ((Comparable)o1.compareTo(o2) >= 0) {

return o1;

}

else {

return o2;

}

}
}

◦ The program would compile if ((Comparable)o1.compareTo(o2) >= 0) is replaced by (((Comparable)o1).compareTo(o2) >= 0).
◦ The program has a compile error because you cannot cast an Object instance o1 into Comparable.
◦ The program has a compile error because Test1 does not have a main method.
◦ The program has a compile error because o1 is an Object instance and it does not have the compareTo method.

billybob123 · **Reply #1 on:** May 6, 2020

A FREE account is required to view all solutions!

Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.

Answer Preview

Only 25% of students answer this correctly