Overriding Methods

AP Computer Science A· difficulty 4/5

public class Animal {
    private String name;
    public Animal(String n) { name = n; }
    public boolean equals(Object o) {
        if (!(o instanceof Animal)) return false;
        return name.equals(((Animal) o).name);
    }
}
// Usage:
Animal a = new Animal("Rex");
Animal b = new Animal("Rex");
System.out.print(a.equals(b));

What is printed?

A
$ClassCastException$
B
$false$
C
$Compile error$
D
$true$
check_circle

Explanation

Both have name "Rex". The instanceof check passes; String.equals on the names returns true.

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