예제

protected void finalize() throws Throwable {
try {
ReferenceQueue refQueue = getQueue();
PhantomReference ref = new PhantomReference(this , refQueue);
ref.enqueue();
}
finally {
super .finalize();
}
}

private ReferenceQueue getQueue() {
return _queue;
}

private transient ReferenceQueue _queue;

솔루션

finalize() 메소드 대신 명시적으로 호출된 정리 메소드를 사용하십시오.

public void free() {
ReferenceQueue refQueue = getQueue();
PhantomReference ref = new PhantomReference(this , refQueue);
ref.enqueue();
}

private ReferenceQueue getQueue() {
return _queue;
}

private transient ReferenceQueue _queue;