I have a big 2-dimensional array A, and also a flat array B of two elements. How can I quickly access element from the A array using numbers (coordinates) in B? The only thing I can do now is:
How do you go about comparing two generic classes? class Entry<K,V> { protected K key; protected V value;
Previously I would always have thought a Vector was good to use for non-descript objects when length was unknown.As far as I was aware I thought it was thread-safe too
Hey guys this is a followup to my previous question. I now have a text file which is formatted like this:
Taken from the Apache TreeList doc: The following relative performance statistics are indicative of this
When I program in C# , there are times when I need a strongly typed collection: I often create a class that inherits from 开发者_JAVA百科the ArrayList:
I have to create a method which has an ArrayList; I need to remove even numbers from this ArrayList. I have written code for that but there is a logical error which I couldn\'t identify.
I am writing a program that will query an MS access database, return the query as a result set, and then I want to ultimately convert that result set into a String array, so that I can pass it into th
When I declared final arraylist(), then can I perform insert,search and update operatio开发者_开发问答n in that arraylist or not.Final means that the variable pointing to the arraylist can\'t change.
I decided to create a currency converter in 开发者_JAVA百科Java, and have it so that it would pull the conversion values out of a text file (to allow for easy editability since these values are consta
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