包含标签：Java 的文章
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Java – log4j configuration file error detection
I am writing a recorder using log4j Once I load log4j Properties or log4j XML file, I wonder if there is a way to chec…… -
Java – there is no setter method in the interface
I have a concrete class a that implements interface B B ref = new A(); code: public interface B{ public abstract Str…… -
Java – completing an activity from another class
I'm developing an application that requires a permanent Internet connection If there is no Internet connection, I want…… -
How to convert float to double in Java?
See English answers > why converting from float to double changes the value? 9 public class DataTypes { static…… -
Java JDBC：Reply. fill()
I sometimes get the following exceptions: The problem is that the code executes successfully for a period of time, and…… -
Transform “Java. Net. Protocolexception: unexpected status line”, anyone?
My Android application crashed the following stack trace, but it worked well when I tried it from the desktop rest cli…… -
Make these balls bounce through Java collection iteration, any tips?
If the problem is not clear, but I can't think of another way to express it, I apologize This is my homework for worki…… -
Java – nonlocking IO vs blocking IO raw data throughput
There is a statement in Apache httpcomponent document: Really? Can anyone explain it in more detail? What is a typical…… -
Java – iterates the bits of char
Suppose I have a char "C" whose ASCII code is 0110 0111 How do I iterate its bits? I want to build a vector from these…… -
Java class with many types of ArrayList
I'm new to Android and Android Java and have questions about my server application communication My server always retu…… -
What does syso statement mean in Java?
What does the syso statement represent in Java? Solution System. out. Short for println(); In eclipse, you can type sy…… -
Try catch performance Java
How long (in nanoseconds) does it take to try catch exceptions instead of checking (assuming that the message has Hash…… -
Go to global variables that are not covered by goroutines
I write CMS in go and have session type (user ID, page content to be rendered, etc.) Ideally, I want this type to be a…… -
Automatically compare Java analysis results of a single unit test
I want to run a single unit test and collect its "analysis" information: the frequency of each method call, how many i…… -
Java – does anyone know any collection of sprites?
I'm making 2D java games I hope the game looks good, so I need good sprites, but I want to focus on the coding of the …… -
Java – installs applications that have no icons or activities
I talked to my friend and he told me that some applications can be installed on Android without any activities or icon…… -
General architecture of data processing system running in Java for a long time?
I was asked to port legacy data processing applications to Java The current version of the system consists of nubmer o…… -
Side effect free methods in Java standard library
I'm working on Java programs that need information about the side effects of method calls For standard library classes…… -
Grizzly – java. lang.NoSuchMethodError：javax. xml. ws. WebFault. messageName
I have a WSDL file for the web service I want to test the interaction between the client and the server To do this, I …… -
Java – missing classpath entry in eclipse
I am using eclipse, Helios service release 2, build ID: 20110218-0911 I created a new dynamic website, in which I adde…… -
Java – set EditText to a single line so that it loses focus after pressing enter
I use EditText in my code and compare its contents with a string when I click a button setSingleLine(true); Prevent th…… -
Java – refresh and get entities after saving (JPA / spring data / Hibernate)
I have these two simple entities something and property Things: @Entity @Table(name = "something") public class Someth…… -
Java phantom JS behaves differently in windows and Linux
I've been trying to solve this problem, but I don't know why, Phantomjs in PC and server is the same v.2 0 In windows …… -
Effective Java: security of forwarding classes
Effective java version 3, Item 18: composition over inheritance describes the problem of adding behavior to classes us…… -
The wrong class was called in the multi version JAR file on Java 9?
I found a problem with the applet using multiple versions of jar. I hope someone can help me I have a very simplified …… -
JavaFX – drag and drop works differently in Java 11 than in Java 8
I wrote a program that uses the drag and drop function in JavaFX It works perfectly in JavaFX 8 In JavaFX 11, the drag…… -
Multithreading – STD:: this_ Thread:: yield() usage?
Can someone provide STD:: this in C application_ A real example of the use of thread:: yield()? Solution I used yield …… -
Java – how to run AspectJ load weaving on gradle (especially libgdx build)
So I want to inject some testing and logging functions into my libgdx game So I added the following to the gradle depe…… -
Java – ignore the saxexception “content not allowed in trailing section”
I'm using Java's documentbuilder Parse (InputStream) to parse XML documents Occasionally, I get malformed XML document…… -
How to declare 32-bit integers in Java?
I am looking for a Java application running on 32 - bit and 64 - bit systems, which mainly deals with IP addresses The…… -
Java – JSTL – iterating user-defined classes using foreach
See English answer > javax servlet. ServletException: javax. servlet. jsp. Jsptagexception: don't know how to itera…… -
Java – ambiguous mockito – 0 matches expectation, 1 record (invaliduseofmatchersexception)
I face a very strange problem@ H_ 301_ 2@URL = "/my/specific/url/"; when(this.restHelperMock.post( eq(myEnum),eq(this.……