英文:
Can a wrapper variable within a Singleton object get garbage collected while Singleton is not null?
问题
在这个 Singleton 实例中，当单例实例仍不为 null 时，这个 private Long severDate 是否会被垃圾回收？
我在一个 Android 应用中遇到了这个问题。想知道 Android 操作系统是否会以某种方式释放未使用的单个内存值。
public class DataHolder {
private static DataHolder self;
private Long severDate;
private int numb;
public static synchronized DataHolder getInstance() {
if (self == null) {
self = new DataHolder();
}
return self;
}
}
英文:
In this Singleton instance, can this private Long severDate become garbage collected when the singleton instance is still not null?
I encountered this is in an Android app. Wondering Android OS somehow freeing unused individual memory values.
public class DataHolder {
private static DataHolder self;
private Long severDate;
private int numb;
public static synchronized DataHolder getInstance() {
if (self == null) {
self = new DataHolder();
}
return self;
}
}
答案1
得分: 0
直到"Long severDate"有一个引用指向它，垃圾回收不会删除它。现在一切都取决于使用情况，您是否在某些类中创建了此单例类的实例。
附言：在安卓中，请确保在onCreate方法中创建该类的对象。
英文:
Until "Long severDate" has a references to it, GC wont be deleting it. Now it all depends on the useCase whether u have created the instance of this singleton class in some classes or not.
P.S: In android make sure that u create the obj of this class in onCreate method.
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