Writing Methods

AP Computer Science A· difficulty 3/5

public class Coin {
    private String side;
    public Coin(String s) { side = s; }
    public String toString() { return "Coin: " + side; }
}
// ...
Coin c = new Coin("Heads");
System.out.println(c);

What is printed?

A
$Compile-time error$
B
$Coin@ <hash>$
C
$Heads$
D
$Coin: Heads$
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Explanation

println implicitly calls toString on the object, returning "Coin: Heads".

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