Constructors

AP Computer Science A· difficulty 3/5

public class Demo {
    private int x = 10;
    private int y;
    public Demo() {
        y = x + 5;
    }
    public int sum() { return x + y; }
}
// ...
Demo d = new Demo();
System.out.println(d.sum());

What is printed?

A
$15$
B
$25$
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C
$10$
D
$5$

Explanation

x is initialized to 10 before the constructor body runs; then y becomes 15; sum returns 25.

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