package java.util;
import checkers.nullness.quals.*;
@checkers.quals.DefaultQualifier("checkers.nullness.quals.NonNull")
// permits null keys and values
public class WeakHashMap<K extends @Nullable Object, V extends @Nullable Object> extends AbstractMap<K, V> implements Map<K, V> {
public WeakHashMap(int a1, float a2) { throw new RuntimeException("skeleton method"); }
public WeakHashMap(int a1) { throw new RuntimeException("skeleton method"); }
public WeakHashMap() { throw new RuntimeException("skeleton method"); }
public WeakHashMap(Map<? extends K, ? extends V> a1) { throw new RuntimeException("skeleton method"); }
public int size() { throw new RuntimeException("skeleton method"); }
public boolean isEmpty() { throw new RuntimeException("skeleton method"); }
public @Pure V get(@Nullable Object a1) { throw new RuntimeException("skeleton method"); }
public @Pure boolean containsKey(@Nullable Object a1) { throw new RuntimeException("skeleton method"); }
public @Nullable V put(K a1, V a2) { throw new RuntimeException("skeleton method"); }
public void putAll(Map<? extends K, ? extends V> a1) { throw new RuntimeException("skeleton method"); }
public @Nullable V remove(@Nullable Object a1) { throw new RuntimeException("skeleton method"); }
public void clear() { throw new RuntimeException("skeleton method"); }
public boolean containsValue(@Nullable Object a1) { throw new RuntimeException("skeleton method"); }
public Set<K> keySet() { throw new RuntimeException("skeleton method"); }
public Collection<V> values() { throw new RuntimeException("skeleton method"); }
public Set<Map.Entry<K, V>> entrySet() { throw new RuntimeException("skeleton method"); }
}