Automatically Removing an Unreferenced Element from a Hash Table : Map « Collections Data Structure « Java






  1. Java
  2. Collections Data Structure
  3. Map

Automatically Removing an Unreferenced Element from a Hash Table

         

import java.util.Iterator;
import java.util.Map;
import java.util.WeakHashMap;

public class Main {
  public static void main(String[] argv) throws Exception {
    Map weakMap = new WeakHashMap();
    Object keyObject = "";
    Object valueObject = "";
    weakMap.put(keyObject, valueObject);

    Iterator it = weakMap.keySet().iterator();
    while (it.hasNext()) {
      Object key = it.next();
    }
  }
}








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