Call garbage collector in Java

public class GarbageCollector {
   /**
   * This method call garbage collector.
   */   
   public void callGC() {
       //Call garbage collector
       System.gc();
   }

   /**
   * One Example
   */
   public static void main(String args[]) throws IOException {

      GarbageCollector garbageCollector= new GarbageCollector ();
      //Example
      garbageCollector.callGC();
      //Output
      System.out.println("Garbage collector called"); //Garbage collector called
   }
}