Source Code : Create a WeakHashMap with a single element in it

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Create a WeakHashMap with a single element in it

     


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

public class Main {
  public static void main(String args[]) {
    final Map<String, String> map = new WeakHashMap<String, String>();
    map.put(new String("A"), "B");
    Runnable runner = new Runnable() {
      public void run() {
        while (map.containsKey("A")) {
          try {
            Thread.sleep(500);
          } catch (InterruptedException ignored) {
          }
          System.gc();
        }
      }
    };

    Thread t = new Thread(runner);
    t.start();
    try {
      t.join();
    } catch (InterruptedException ignored) {
    }
  }
}

   
    
    
    
    
  

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