When I try to convert a double array to a Double arrayList I got the following error: Exception in thread \"main\" java.lan开发者_如何学JAVAg.ClassCastException: [D cannot be cast to java.lang.Doubl
I\'m trying to write an Android game and I would like to be able to pause th开发者_如何学Pythone game even if the user wants to return to the main menu or the activity gets killed off by the system. o
I have created the following simple Java Swing program which outputs a 3*3 square in the window every time the user clicks their mouse. The squares remain in the window even if the user clicks more th
How do you pass an instance of ArrayList&l开发者_如何学运维t;ArrayList<HashMap<String, String>>> from one Android activity to another via an instance of Bundle?
Currently I have my code putting user input into a one-dimensional ArrayList, but I would like to put them into a two dimensional ArrayList and am having some trouble.
What is the most efficient way of sorting only a part of ArrayList? Say all elements from index 0 to 3 in an Arraylist which contains 10 elements.
I am having trouble starting out this program, I am suppose to write a program that will create an ArrayList, asking the user for 10 numbers. Then this will be put into the Array. Then after the list
This question already has answers here: Iterating t开发者_如何学编程hrough a Collection, avoiding ConcurrentModificationException when removing objects in a loop
I have a Server class and a Timer inside it which is supposed to clear dead clients (clients who crashed). I followed the example below by locking the collection when the Timer iterates over the users
I\'m need of some basic help. I\'ve got a Folder, in which there is a File. In the File, there are two lines, and the data in the lines is seperated with a \"//\".
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