包含标签：Java 的文章
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Is there a Java enum in European countries and languages?
Are there any Java (> 5) enumerations for listing European countries and languages somewhere? But if I can avoid th…… -
Java – what is the difference between jaxp, JDOM, Dom4j and Xerces?
What's the difference between them? It is said that jaxp is just an API specification, which is implemented by JDOM an…… -
Java – can sockets accessed in different programming languages communicate?
Is the socket programming language independent? Can I keep the server written in Java and the client written in C? Sol…… -
Java – the program continues to run despite the interruptedexception
I started learning Java, and now I'm in the concurrency chapter After reading something about concurrency, I tried my …… -
Java – (simple) dateformat, allowing 24:00:00 and 00:00:00 as input
I've been looking for this, but I haven't succeeded so far Do you know if there is a "dateformat" ish class, which wil…… -
2D array problem Java
If I have a 2D array arr [rows] [columns], how can I find the size of rows and columns respectively with arr.length? S…… -
Java – unconditionally execute tasks in ant?
I'm trying to define the task of sending (using echo) messages when the target completes execution, whether the target…… -
Java – sample programs are required to throw interruptedexception
I'm going through Chapter 9 (threads) of Kathy Sierra scjp 1.5, which is mentioned: I just need a sample program to kn…… -
Java – you can specify an integer value for char, but you cannot assign an integer variable to char
Why not compile the following code int n = 5; char c = n; But the following compilation char c = 5; In both cases, don…… -
Display graphics – free Java library
See English answers > drawing graphs on Java [closed] 6 Solution There is an open source version of JGraph -
How to convert TIF to PNG in Java?
What is the best way to convert TIF files to PNG in Java? Simplicity is desirable, but if the easiest way is to use a …… -
Qualified variables for garbage collection in Java
I was preparing for ocpjp, and I was trapped in the following mock exam questions: Whereas: 3. interface Animal { void…… -
Java – when to use doget, dopost, and service
See English answers > doget and dopost in servlets5 >Dopost has no limit on the number of parameters, while doge…… -
How do I change the background color of jtabbedpane?
I know you can modify the LAF properties, but if you don't, how can you do it? I'm just asking, because setbackground …… -
Java – missing twitter4j authentication credentials
I want to use Twitter 4J to tweet in my android app This is my code: //TWITTER SHARE. @Click (R.id. img_btn_twitter) @…… -
How to use guava predictions as a filter in the Java 8 stream API
Guava predictions cannot be used as a filter for the Java 8 streaming API For example, this is not possible: Number fi…… -
Java – Functional Programming: how to handle exceptions or their equivalents in functional programming
Let's say I have the following code public int divide(int dividend,int divisor) { if( divisor == 0 || (dividend ==…… -
Java – the scanner did not scan my input
I'm trying to read a line and then enter the if statement But it will terminate after the first input of red import ja…… -
ActiveX from Java applications?
Can ActiveX controls be easily embedded in Java applications? Is it worth it In my next project, I should use existing…… -
Java – how do I access the configuration files in the jar?
I am using flatpack to parse and load data in flat files This requires loading the configuration file that stores the …… -
Java – why are variables allowed to be declared in a for loop?
I'm a student. I'm learning java at school. I'm confused about it That's what I mean: for (int i = 0; i < 3; i ++) …… -
Java – how to test e-mail logic using play framework
I found an extended mailer course and wanted to test it automatically Using a mock mail program, I can send mail to th…… -
Java – draw simpleweightedgraph on JPanel
I have a simpleweightedgraph that I want to draw on JPanel in JFrame I read this article They are using the listenable…… -
Unable to make Java program run! NoClassDefFoundError?
I am. Net developers, but for my current project, I need to use Google Caja, which is a java project Well, oh! On a Wi…… -
Java – find a simpler way to prime than this?
Is there a more effective, cleaner / more elegant way to find primes? The code works normally, but I just wrote some o…… -
Does adding a method to a Java class increase the memory usage of its instance?
Adding a member variable to a class will certainly increase the memory usage of its instance on the heap, but what abo…… -
Java – common types and performance
I wonder if the use of generic types in an application will have any (significant) degraded performance impact on the …… -
Java – viewpager is called actvity after completion.
I'm developing an application. I have to use viewpager. After all the projects in viewpager are completed, I have to c…… -
Java – unchecked transformation
I don't want to suppress the warning Is there another way to handle this warning? An expression of type iterator requi…… -
Rewriting conditional statements in Java
Suppose I have the following code, which basically determines some condition matches, then assigns Boolean values, and…… -
How to perform validation in JSF and how to create a custom validator in JSF
I want to perform validation in some of my input components, such as < H: inputtext > using some java bean metho…… -
Java 8 – filter lists in map values
I am writing a method that uses the input map in the format of map < term, list < integer > > One of the t……