Java
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java – com. sun. AWT package usage
I found a java code and wanted to use it in my project It contains these imports that my JDK does not have: import com…… -
Java – gets the height of the textview
I have some text to put in textview I did it with settext() Now I need to find the number of lines or height of text i…… -
Java – how to add ArrayList in JSP
<html> <html> <head> <Meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1…… -
Java – in the method m of class C, is this Getclass() is always c?
In the method m of class C, is this Getclass() is always c? Solution No, No If there are subclasses class C { Class…… -
Java – how do you decide when to upgrade libraries in your project?
I work on a project that uses multiple open source Java libraries When upgrading to these libraries, we tend to follow…… -
In Java, should resources be placed in the package / source hierarchy?
Suppose I develop a game and put it into the package structure: com.dxmio.games.breakout So where is the "best practic…… -
Can I declare a 1-bit variable in Java?
My algorithm uses a huge Boolean array. As I taught, each boolean variable needs 1 byte Declare a Boolean array anyway…… -
Java DOM XML cannot get child
My XML looks like this: <ConnProf ConnProfID="1111"> <ConnNum>1</ConnNum> <IsMSPA>false<…… -
java. Lang.illegalstateexception: the response submitted in the servlet cannot be forwarded
See English answer > java Lang. IllegalStateException: cannot (forward | sendredirect | create session) after respo…… -
Javafx-2 – internal framework in JavaFX
I found this example of an internal framework http://docs.oracle.com/javase/tutorial/uiswing/components/internalframe.…… -
Java stream – the result is obtained after splitting the string twice
I have a string: String modulesToUpdate = "potato:module1,tomato:module2"; I want to get it from it: module1 module2 F…… -
Java – what is the best way to find the first repeating character in a string
I wrote the following code to detect the first duplicate character in the string public static int detectDuplicate(Str…… -
JSF – P: autocomplete itemlabel throws “class’ Java. Lang. string ‘has no attribute’ label ‘.”
I'm changing from icefaces to primefaces (I really want to change RichFaces, but I won't cause errors in the new versi…… -
In Java, is there a more elegant way to remove duplicate strings from the ArrayList of strings?
So, in short, I have a Java job assignment that needs to manipulate the long ArrayList of strings in various ways (wha…… -
Profile java code
I need to describe my java SRC code for some specific problems I am currently dealing with I've been using a trial ver…… -
Java – how to use scheme / LISP / clojure to deal with matrix / LP problems?
I need to do numerical analysis supported by MATLAB or numpy Thank you. Solution For Common Lisp, see >Matlisp: mat…… -
Java — the problem of adjusting canvas in JScrollPane in jsplitpane
I am using NetBeans GUI editor to create an application. I want to have a jsplitpane in it. The top component will be …… -
Java – is it better for libgdx to use spritesheet or a single image?
I'm new to libgdx. I made 40 frames for the "hero run" wizard. I don't know if it's better to use spritesheet or a sin…… -
Java – how do I run unit tests against only changed source files?
Is there a way for me to run unit tests only for the Java classes it builds? For example, if MyClass If Java has expir…… -
Java – how to ignore spaces when reading files to generate XML DOM
I'm trying to read a file to generate a DOM document, but the file has spaces and newlines. I try to ignore them, but …… -
What is the equivalent of unsigned long in Java
I wrote the following three functions for my project: WORD shuffling(WORD x) { // WORD - 4 bytes - 32 bits //given i…… -
Java – does spring provide securitycontext for threads executing hystrix commands
I'm running a spring boot application and just started integrating hystrix from spring cloud Netflix I'm using @ hystr…… -
Why doesn’t Java support structure? (just out of curiosity)
I know you can use the public domain or some other solution Maybe you don't need them at all But out of curiosity, why…… -
Java – array recursion
I have a task I can't figure out. Any pointer will be very grateful. It is like this: A series of bulbs are represente…… -
Java – why doesn’t 0.0F / 0.0F produce any runtime errors?
Recently I tested the following program & I expect runtime errors, but it displays "Nan" as output Why & how? …… -
Final variables and synchronization blocks in Java
What is the final variable in Java? For example, if I write the final int temp; What is the meaning of the final keywo…… -
Java – how do I run unit tests against only changed source files?
Is there a way for me to run unit tests only for the Java classes it builds? For example, if MyClass If Java has expir…… -
Java operator, used to check whether two conditions are false, but not both conditions are false
If any condition is false, will the operator in Java give a result of false, but if both are true or both are false, t…… -
Java – guava set: limit the size of the permutation
Use guava 12 collections2 Permutations(), I wonder if I can limit the size of the permutation? More precisely, I want …… -
How do I run the 32-bit API on a 64 bit computer?
I'm writing a Java application that must communicate with it. It must communicate with XBee radio through USB cable To…… -
Java – when I need to be in optional Use optional. On orelse() When orelseget()
I need to make a clear explanation for this. Even if I am reading this link about differences, there is no clear defin…… -
Java – default expiration time of Google guava cache
I want to know the default expiration policy of guava cache Solution Suppose you're talking about cache builder From G……