Java
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MVC pattern in Java swing?
Please give an example of the MVC pattern used in the Java Swing package? Solution Basically, the swing component itse…… -
Java – what are the disadvantages of writing! string. isEmpty()？
In if statements in Java code, I often read if (string! = null & & string. Isempty() = = false) and so on I am…… -
Build a simple GUI using the swing Library in Java 1.6
I'm trying to build a simple GUI using the swing library I don't understand why my table is deleting everything previo…… -
Vcdiff or alternate binary difference format for Java
Is there an open source Java implementation of vcdiff binary differential format (decoder and encoder)? There are xdel…… -
Java – how to perform a series of sorting operations (multiple sorting conditions) on ArrayList
I have an ArrayList of objects on which I want to run a series of sorting operations I want to sort them by name first…… -
Java – a system that players drop (basically gravity)
I'm making a game like Doodle Jump to make your players as high as possible Now I let my player work and move But the …… -
Java – a faster way to batch save using Hibernate?
I have a program that reads text files line by line, creates a hibernate entity object from each line, and saves them …… -
Executing UNIX system commands from Java problems
I encountered a strange problem when executing system commands from Java code Runtime. getRuntime(). exec(“system_prof…… -
Java – questions about polymorphism and overloading
I try to understand the concepts of polymorphism and overloading I have the following code as an experiment However, I…… -
Java – third party object whose design pattern is “toString”
I have a third-party object that uses from Java ToString method inherited from lang.Object This method is useless But …… -
java – super. Problems with paintcomponent (g)
This is a clip: protected void paintComponent(final Graphics g) { Runnable r=new Runnable() { @Override public …… -
Java – the problem of compiling JUnit test classes with ant
I'm working on JUnit with ant build There was a problem integrating XML files My test class is in the same directory a…… -
Java – opengl for space simulator
Together with several friends, we started this Java based project independent of amateur platform for space combat sim…… -
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Java – what’s wrong with my factory?
I have some code like this: public abstract class Foo { public static Foo getFoo() { return new FooImpl();…… -
java：new File(“”,“name”)！= new file(“name”)？ (file constructor with empty string)
We have noticed this today Since there is a file named "existing" in the PWD of java process (Windows) new File("exist…… -
Java – spring promotion_ Required transaction attribute?
In http://www.vermatech.com/code/SpringTransactionExamples.html In the first case study given, testModel.deleteAllCoun…… -
Java Swing: separating UI components from logical behavior – how do you handle this?
What do I do in NetBeans, for example: >Create a UI component class with the suffix swing component type, for examp…… -
Java – spring: how to ensure that a class is instantiated only by spring, not by new
Is it possible to ensure that only spring can instantiate a class instead of using the keyword new at compile time? (a…… -
Java color opacity
I have a way to determine the color based on certain values The method is as follows: public Color color(double val) {…… -
Java – graph: find an algorithm to determine the shortest path from one point to another in a rectangular maze?
I am trying to work out an appropriate algorithm to move from the start position to the exit position in the maze 10 3…… -
Java – how to create an optional binding in Guice?
This is my client: @H_ 403_ 8@ @H_ 403_ 8@ class Client { @Inject(optional=true) Service service; } Sometimes we d…… -
Java – findbugs wants readObject (…) private serialization. Why?
I run findbugs on some code and it says that the readObject (...) method must be private to be called for serializatio…… -
Java – how do I download new files only from the server?
I have many CSV files that I want to download from Yahoo Finance every day I want my application to read the creation …… -
How do I convert bufferedimage to / from an image?
I want to convert buffered image to Java awt. Image. My source image is TIF, so I use Jai to read it as planarimage: T…… -
Java simple sentence parser
Is there any simple way to create a sentence parser in normal Java The parser should not only focus on the white space…… -
Java – how to test Guice singleton?
Guice singletons is strange to me First of all, I thought IService ser = Guice.createInjector().getInstance(IService.c…… -
Java – is it easier to use foo when it is represented by the class ArrayList rather than the interface list?
I see a lot of grammar and don't understand the reasons behind it I think you usually want to use classes instead of i…… -
Java – use methods on each item in the array
I have a dynamically populated string array I want to run this function: String[] name = request.getParameterValues("n…… -
Java decimal precision problem
I have a problem. I have to print in long decimal places Solution In C or Java, you won't get so much decimal precisio…… -
Java – list sorting challenges
Suppose I have final Iterable<String> unsorted = asList("FOO","BAR","PREFA","ZOO","PREFZ","PREFOO"); What can I …… -
Is there any way to generate content type headers from file extensions in Java?
I have a Java application that sometimes has to be changed from a file list to a content - type header Is there any wa……