包含标签：Java 的文章
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Java – the most effective idiom for reading only one integer from a file?
Trying to solve Facebook's Puzzle "happiness hop", http://www.facebook.com/careers/puzzles.php?puzzle_id=7 I only read…… -
Java – why reference the base class when I can access all methods by referencing subclasses?
I'm learning java concepts Anyone can give me the actual concept. Why do we have to assign subclass instances to base …… -
Java list best practices
I need some containers to hold elements. If I'm going to try to get the size () I element, I'll get the element number…… -
Java – Android – how to delete an item from a cursor?
Suppose I use the following cursor to get someone's call record: String[] strFields = { android.provider.CallLog.C…… -
How do I get the second word from a string?
Take these examples Smith John Smith-Crane John Smith-Crane John-Henry Smith-Crane John Henry I want the first word af…… -
Java – which is faster, int to string or string to int?
This seems to be a fairly basic problem. I apologize in advance I'm writing an Android application that uses a set of …… -
From ArrayList – Java updates jlabel every x seconds
I have a simple java program, which reads a text file, splits it with "" (space), displays the first word, waits 2 sec…… -
Java – select the ith smallest element from the array
I have a divide and conquer method to find the ith smallest element from the array This is the code: public class rand…… -
Java – Android and gson throw no args constructor not found exception
There is a gson problem in my android app JSON input [ {"id":"1202","parent_id":"0","agrpcount":"0","disp_order":"…… -
Java – can I determine whether the data is in English or Chinese?
Can you determine whether the data is in English or Chinese? Solution For example, this can be done using statistical …… -
Java – why do I need synchronization?
I'm trying to fill some shameful gaps in my knowledge of Java threads, and I'm reading Java concurrency in practice in…… -
Java – multiple counts in a single query – Oracle
I need to calculate two data in the same table for two time periods SELECT COUNT(CASE WHEN click_date…… -
Writing bash scripts from Java
I have a java program that writes bash scripts Unfortunately, when saving this script, I need to modify it (Ubuntu 10.…… -
Java – what did I miss, or varargs break arrays asList？
private void activateRecords(long[] stuff) { private void activateRecords(long[] stuff) { ... api.activateReco…… -
Java: how do I close another JFrame when I open it?
My program starts with a picture with a text field in JFrame I want to close the picture JFrame and open another JFram…… -
Java – how to set Maven for two separate projects that depend on the same jar
If you answer this question elsewhere, please blame me and point out the right direction I am new to Maven and try to …… -
Java – cache in C accessed through JNI
Does building an LRU type cache in C / C + + and letting Java access it through JNI help improve performance? Solution…… -
Java – business rules – where are they in OOP?
I have a lesson: timetable public class Schedule { private int locationNum; private int cost; private String costReas…… -
Java – finite state machine program
My task is to create a small program that can read the definition of FSM from the input, read some strings from the in…… -
Java – in general, when any one works, which is better, a HashMap or a hash table?
I occasionally use hash tables in several languages, but I encounter Java maps while browsing some code I checked the …… -
Nsurlconnection – variable nshtturlresponse or nsurlresponse
I need to modify the response header in the nsurlresponse Is that possible? Solution I just talked about it with my fr…… -
Java – which framework should I choose for a particular web application?
What are the factors that determine the choice of framework, the technology of web application Any architect should pr…… -
Java – why cast to closed first?
While reading some java source code, I came across this line: ((Closeable) some_obj).close(); some_ Obj is obviously a…… -
Java – how to hide public methods?
There is a method in my static state machine that is used only once when my application starts for the first time This…… -
Can I rename implemented methods in Java?
I have a class that implements the interface, and one of its methods is called onclick Is there a way to implement onc…… -
Errors that require assistance in compiling basic Java programs
I'm new to Java I'm having trouble compiling basic Java programs, and I'm trying to understand why (note that the TEXT…… -
Is there a C equivalent to Java concurrenthashmap#
I need a dictionary / HashMap in c# that allows you to do the following >The placement value does not iterate simul…… -
Java – how do you handle the generated code?
What is a good strategy for handling generated code? One of our projects uses Apache CXF's wsdl2 Java tool to generate…… -
Use the “Java” command to run CentOS Jar file
I'm trying to run on my CentOS box Jar file, but it says "Java: command not found" What is the best or simplest way to…… -
Declare parameter subtypes in Java interfaces and use subtypes in Java implementation methods
I want to declare a method in the interface, where the parameters of the method defined in the implementation class ca…… -
Java – opencv “Hello world” example for Android
How do I use opencv on Android? If possible, please provide a simple "Hello world" opencv code example for Android Sol…… -
Java – Android layout files do not allow characters such as &, <, >
When I try to use &, <, > as main XML and strings XML, which returns an error I want to mean "&" and "&l……