Discussion
The program is run with java -ea Program104 - what will be the output?
public class Program104
{
interface Limits { int MAX = 10; }
public static void main(String[] args)
{
assert Limits.MAX == 10;
System.out.println(Limits.MAX);
}
}
Answer: D
A field declared in an interface is implicitly public, static and final, so Limits.MAX is a constant equal to 10. The assertion passes and 10 is printed. Interfaces may hold constants; what they cannot hold is mutable instance state.
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