Java
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User interface – which is a better tool for BlackBerry application development?
Which GUI development option provides an optimized and faster GUI for BlackBerry applications? Solution There is no do…… -
How to find the time complexity of recursive methods in Java?
I can't fully grasp the concept of complexity. I want to know how to calculate it for method f (n) in this Code: impor…… -
Java – is there anything better than calling arrays Aslist is a better alternative to list initialization?
Is there a better alternative to using arrays Aslist as a list batch initialization program? Worryingly, this one is v…… -
Java – how to deeply copy 2-dimensional arrays (different row sizes)
This is my first question in such a community, so my format may not be very good. Sorry Since my problem is that I wan…… -
Java – a rest service that accepts and returns objects How to write client?
I have announced two rest web services A simple return of an object Others accept one object and return another @XmlRo…… -
What is Java util. Random. O (n) of next (n)
I want to know Java util. Random. Is next (n) linearly proportional to N or a constant? Can someone help me with this …… -
Why should a Java – 12 factor application be self-contained?
In the 12 factor article on Port Binding Solution To understand the rules for port binding and self-contained applicat…… -
Java – can you confuse code with unit tests?
I wanted to confuse our Java Web application code in our existing ant build script, but I encountered a problem with u…… -
Java – passing ArrayList to a separate class?
I have a code to read from the SQL database and save each column of information to the ArrayList I need to pass each A…… -
Java – does creating a new thread have the side effect of refreshing the cache?
I wonder if creating a new thread in Java will trigger a cache refresh Suppose I do this in the following order: >T…… -
Java: enumerating values () and valueof (string)
Why does javac add the value () and valueof (string) methods to the enumeration type being defined? Wouldn't it be bet…… -
Java – export jasperreports in HTML format
The following code gets a byte [] result, which is applicable to PDF and xlsx An exception was thrown for HTML JasperP…… -
Pass Java map to C method using swig
I have a method defined in C: std::map<std::string,std::string> validate( std…… -
Trace the Java / Android stack to a unique bucket
When a stack trace of unhandled exceptions is recorded in Java or Android (for example, through acra), the stack trace…… -
Java – how to create a generic type safe HashMap by class type?
See English answers > java map with values limited by key's type parameter5 Later, I want to pass the class type an…… -
Java – should I override the hashcode () of the collection?
Given that I have a number of courses that cover a variety of areas: class MyClass { private String s; private…… -
A filled list with an empty vector causes its length to change
In the following code, I expect something of length 96, but I get a list of length 48 Can you explain the result? num_…… -
Java – log in and play non blocked?
Log in to play non blocked? Does it use some non blocking IO APIs behind the scenes? Is it scheduled in some other thr…… -
Java – I can automatically execute JUnit test cases once when all logging is enabled and automatically execute after all logging is disabled
I have found a solution. Please refer to the answer below Does anyone have something more elegant? I think this is to …… -
Java – iso8601 using Jackson in JSON in milliseconds
import com.fasterxml.jackson.databind.util.ISO8601DateFormat; import com.fasterxml.jackson.databind.util.ISO8601DateFo…… -
Java – iterates over each possible double value
Consider the situation where you want to test each possible input value Creating a situation that iterates over all po…… -
Java – Android studio error: org gradle. process. internal. ExecException
I'm a novice in Android development, and I encountered my first mistake, which seems to be unsolvable I have downloade…… -
Multithreading – distributed computing and threading
How similar are distributed computing and threads? I found that two papers came to the opposite conclusion: "Multithre…… -
Java – Apache POI adds a series name to linechart
I am using Apache POI to create a linechart in an excel document As far as I can imagine, in the following figure: I w…… -
Java – change the color of the up arrow and mark it as a private warning
After defining a custom color for the backward arrow in the action bar, a warning is returned What can be done to get …… -
Java – white package icon in my eclipse package Explorer
I received these strange white package icons in the test project From what I see@ http://jamie.ideasasylum.com/images/…… -
JavaFX tableview edit that clicks and automatically inserts rows?
I use tableview in my program to display a few good lines Question 1: when a user wants to modify a value, he will dou…… -
Do you need a reference to the second value to sort tuple vectors?
I have a vector of integer tuples and want to sort them by the second element of each tuple: fn main() { let mut t…… -
Java – how to use JPA2 to persist entities containing user type fields
I'm looking for a way to persist entities that contain user type fields import org.joda.time.DateTime; @Entity public…… -
Java – monitor windows directory size
I'm looking for something that can monitor the size of the windows directory and the number of files I'm talking about…… -
Java – ehcache – uses list as the cache value
So this is the problem I'm trying to solve - I have an object with two integer fields, and I want to cache public clas……