Java tutorial
package org.apache.commons.vfs.cache; import org.apache.commons.vfs.FileObject; import java.lang.ref.Reference; import java.lang.ref.ReferenceQueue; import java.lang.ref.WeakReference; /** * This implementation caches every file as long as it is strongly reachable by * the java vm. As soon as the object is no longer reachable it will be discarded. * In contrast to the SoftRefFilesCache this implementation might free resources faster * as it don't wait until a memory limitation. * * @author <a href="mailto:imario@apache.org">Mario Ivankovits</a> * @version $Revision$ $Date: 2005-09-30 09:02:41 +0200 (Fr, 30 Sep * 2005) $ * @see java.lang.ref.WeakReference */ public class WeakRefFilesCache extends SoftRefFilesCache { protected Reference createReference(FileObject file, ReferenceQueue refqueue) { return new WeakReference(file, refqueue); } }