I have method that accept argument of Object type. But inside of method checked if is e.g. List type.
If I created inside method some kind of collection - list, array or map, after exiting from method if this collection contains references also for externa开发者_如何学运维l objects GC free the memory?
We have a collection of objects, each object has an integer ID and a timestamp.We want to be able to search for duplicates and update the collection based on the I开发者_如何学JAVAD.
I am trying to write a generic fill method, and following is wha开发者_运维百科t I have come up with so far:
When there is an List<Person>, is there a possibility of getting List of all person.getName() out of that?
I\'d like to do something like this: (1 to 100).parallel(20).filter(_ > 20).foreach(sendViaHttp) List(1,3,5,9,100).parallel(3).map(fetchFromDatabase)
This question already has answers here: How to remove elements from a generic list while iterating over it?
I am trying to load from a database a graph of parent/child objects (similar to the DefaultMutableTreeNode object of Java). There is a simple one-to-many association between the 2. The total number of
Can I pass a collection of locations to HitTest(object, location). I have a line for an object and a points that make the edge of a shape, which are the locations. Is this an efficien开发者_开发知识库
Using raw type warning occured, how to use par开发者_开发问答ameterized type for List apa=(List)class1.method1(xx);
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