import java.util.*; | |
interface Factory<T> { | |
T create(); | |
} | |
class LambdaTest { | |
public void testR() { | |
Map<String, Map<String, Counter>> map = | |
new ComputeMap<String, Map<String, Counter>>(() -> | |
new ComputeMap<>(Counter::new)); | |
} | |
public static class ComputeMap<K, V> extends HashMap<K, V> { | |
public ComputeMap(Factory<V> factory) { | |
} | |
} | |
public static class Counter { | |
public Counter() { | |
this(0); | |
} | |
public Counter(int count) { | |
} | |
} | |
} |