Example usage for java.lang.ref ReferenceQueue remove

Introduction

In this page you can find the example usage for java.lang.ref ReferenceQueue remove.

Prototype

public Reference<? extends T> remove() throws InterruptedException 

Source Link

Document

Removes the next reference object in this queue, blocking until one becomes available.

Usage

From source file:Main.java

public static void main(String[] argv) throws Exception {
    ReferenceQueue rq = new ReferenceQueue();
    WeakReference<String> wr = new WeakReference<String>("string", rq);

    while (true) {
        Reference r = rq.remove();
        if (r == wr) {
            System.out.println("no longer referenced");
        }//  w  ww.j  av a 2 s.  c o  m
    }
}

---

From source file:Main.java

public static void main(String[] argv) throws Exception {
    ReferenceQueue rq = new ReferenceQueue();
    PhantomReference<String> pr = new PhantomReference<String>("object", rq);

    while (true) {
        Reference r = rq.remove();
        if (r == pr) {
            // about to be reclaimed.
            r.clear();/*w  w  w. ja  v a 2 s  .com*/
        }
    }
}

---