I have a HashMap that contains 12 million entries. It m开发者_运维知识库aps String values to Long values. Each string is about ten characters long. Is it possible to calculate how much memory this map
I am working on a project where a lot of searches are being conducted on a very large set of data so I am realizing using a traditional database structure itsn\'t working as I need to read tables into
I am new to doing this so开发者_如何学运维rt of thing but I would like to figure a simple method for persisting a Java object that will contains a sashMap and also lists. I have been researching this
I want to read data from a HashMap using EL in a JSP page, but without t开发者_开发知识库he use of JSTL <c:forEach> or a for loop. How can I do this?Just use the map key as if it were a bean pro
#include <iostream> #include <iomanip> #include <string> #include <vector> using namespace std;
There are plenty of situations where you have to chose a Random entry of a Map containing thousands or millions of elements. For example displaying a random quote, or definition, or customer feedback.
I\'m writing a script the stores db info in a hash to be later available for easy access. My code looks something like this:
This question already has answers here: 开发者_StackOverflow社区Java: how to convert HashMap<String, Object> to array
i have the following line of code which displays the following warning: HashMap<String,String> currentItem = (HashMap<String,String>) adapter.getItemAtPosition(position);
I have an Android application which retrieves from a external server, a name and a corresponding ID (this could be 1 name and ID combo or multiple name ID combinations), these are all stored in a Hash
加载中,请稍侯......