// Example of using WeakHashMap in Java
import java.util.WeakHashMap;
public class WeakHashMapExample {
public static void main(String[] args) {
WeakHashMap weakMap = new WeakHashMap<>();
String key = new String("Key");
String value = "Value";
weakMap.put(key, value);
System.out.println("WeakHashMap before nullifying key: " + weakMap);
// Nullifying key reference
key = null;
// Requesting garbage collection
System.gc();
// Now the entry should be collected
System.out.println("WeakHashMap after nullifying key: " + weakMap);
}
}
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