Overriding Methods

AP Computer Science A· difficulty 3/5

public class Point {
    private int x, y;
    public Point(int a, int b) { x = a; y = b; }
    public boolean equals(Object o) {
        if (!(o instanceof Point)) return false;
        Point p = (Point) o;
        return x == p.x && y == p.y;
    }
}
// Usage:
Point a = new Point(1, 2);
Point b = new Point(1, 2);
System.out.print(a.equals(b));

What is printed?

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

Explanation

The equals override compares fields. b is a Point with x=1 and y=2 matching a, so equals returns true.

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