Java Local reference over instance variable

While going through the libgdx source code for a Stage, I encountered this segment: public void draw () { Camera camera = viewport.getCamera(); camera.update(); if (!root.isVisible()) return; Batch batch = this.batch; if (batch != null) { batch.setProjectionMatrix(camera.combined); batch.begin(); root.draw(batch, 1); batch.end(); } i

通过实例变量的Java本地引用

在浏览Stage的libgdx源代码时,我遇到了这样一段: public void draw () { Camera camera = viewport.getCamera(); camera.update(); if (!root.isVisible()) return; Batch batch = this.batch; if (batch != null) { batch.setProjectionMatrix(camera.combined); batch.begin(); root.draw(batch, 1); batch.end(); } if (debug) drawDebug(); } (在GitHu

Android Unique ID

This question already has an answer here: Is there a unique Android device ID? 40 answers Create an ID locally, store it in prefs, and then back it up using Data Backup to the cloud via the user's Google Account, so when they reinstall it, the settings come back http://developer.android.com/guide/topics/data/backup.html

Android独一无二的ID

这个问题在这里已经有了答案: 是否有唯一的Android设备ID? 40个答案 在本地创建ID,将其存储在首选项中,然后通过用户的Google帐户使用数据备份将其备份到云中,因此当它们重新安装时,设置会返回 http://developer.android.com/guide/topics/data/backup.html

Status expected:<200> but was:<404> in spring test

I have this class: package controllers; import static org.junit.Assert.*; import static org.mockito.Mockito.mock; import static org.mockito.Mockito.times; import static org.mockito.Mockito.verify; import static org.mockito.Mockito.when; import java.util.HashSet; import org.junit.Before; import org.junit.Test; import org.junit.runner.RunWith; import

预期状态:<200>但在春季测试中:<404>

我有这个班级: package controllers; import static org.junit.Assert.*; import static org.mockito.Mockito.mock; import static org.mockito.Mockito.times; import static org.mockito.Mockito.verify; import static org.mockito.Mockito.when; import java.util.HashSet; import org.junit.Before; import org.junit.Test; import org.junit.runner.RunWith; import org.

Can an anonymous class implement the non abstract method of the abstract class?

Can an Abstract class non abstract method be overridden by using Anonymous class?. The FindBugs tool is issuing " Uncallable method of anonymous class" issue. Please check the below example for more information public class BaseClass { // This class is a Library Class. } public abstract class AbstractBaseClass extends BaseClass { public abstract void abstractMethod(); pu

一个匿名类可以实现抽象类的非抽象方法吗?

抽象类非抽象方法可以通过使用匿名类来重写吗? FindBugs工具正在发布“匿名类的Uncallable方法”问题。 请查看下面的示例以获取更多信息 public class BaseClass { // This class is a Library Class. } public abstract class AbstractBaseClass extends BaseClass { public abstract void abstractMethod(); public void nonAbstractMethod() {} } public abstract class DerivedAbstractClass extends Abstrac

Create a single executable JAR from a Spring Based Java Application

I have a spring based application that does a component/package scan looking for packages within a certain namespace. The application runs perfectly in Eclipse and I'd like to create a single executable JAR to deploy to our various environments. I've tried various ways to get this to work but the only thing that's working is if I include the dependencies in a folder outside of the

从基于Spring的Java应用程序创建单个可执行JAR

我有一个基于Spring的应用程序,它执行组件/软件包扫描,以在特定名称空间内查找软件包。 该应用程序在Eclipse中完美运行,我想创建一个可执行JAR以部署到我们的各种环境。 我尝试过各种方法来实现这个功能,但唯一有效的方法是将依赖项包含在JAR之外的文件夹中。 这是我到目前为止所尝试的 - Maven从这里编译到一个jar文件 ,使用这种方法创建单个JAR,并将依赖项作为类包含在内。 当使用JAR运行JAR时 - “java -jar

Java NIO Zip Filesystem equivalent of setMethod() in java.util.zip.ZipEntry

I have some existing code to create zip files in the Epub 2 format, which works correctly. In trying to update my code to support the Epub 3 format, I thought I would try the Java NIO Zip Filesystem instead of java.util.zip.ZipFile . I am almost there except for one tiny item. There is a 20 byte mimetype file required by the Epub format which must be put into the zip in uncompressed form. T

java.util.zip.ZipEntry中setMethod()的等效Java NIO Zip文件系统

我有一些现有的代码来创建工作正常的Epub 2格式的zip文件。 在试图更新我的代码以支持Epub 3格式时,我想我会尝试Java NIO Zip文件系统而不是java.util.zip.ZipFile 。 我几乎在那里除了一件小东西。 有一个20字节mimetype由必须投入非压缩格式压缩ePub格式所需的文件。 java.util.zip.ZipEntry API提供setMethod(ZipEntry.STORED)来实现这一点。 我在Java NIO FileSystem API文档中找不到任何对此的引用。 有没有相当

CSE 214 , Java, complex number help

This is a CSE homework, I was hoping there might be some friendly guys and gals out there that might take a quick look and see if it looks good to turn in, thanks Y'all. Here are the instructions and the code I wrote, -Kyle write a ComplexNumber class with: (1) a constructor which does not take any parameters (where the default value of a complex number should be 0 + 0i in this case.)

CSE 214,Java,复数帮助

这是CSE的家庭作业,我希望可能会有一些友好的家伙和GAL在那里可能需要快速查看,看看它是否看起来不错,谢谢你们。 以下是我写的说明和代码, -Kyle 编写一个ComplexNumber类: (1)不带任何参数的构造函数(在这种情况下,复数的默认值应为0 + 0i)。 (2)另一个构造函数,它将int类型的实部和虚部作为参数 (3)以另一个复数c2作为参数并将c2加到当前复数中的add方法,并返回得到的复数。 (4)以另一个复数c2

asynchronous http request handling with tomcat and spring

It's my first SO question so be patient with me :) I'm trying to create a service that: Receives HTTP GET requests containing a URL to query For a single GET request the service extracts the URL Queries a local DB about the URL If a result was found in the DB it will return it to the client and if not it will need to query some external services (that may take relatively long ti

使用tomcat和spring进行异步http请求处理

这是我的第一个问题,所以请耐心等待:) 我正在尝试创建一项服务: 接收包含要查询的URL的HTTP GET请求 对于单个GET请求,服务将提取URL 查询关于URL的本地数据库 如果在数据库中找到结果,它会将其返回给客户端,如果不是,则需要查询一些外部服务(可能需要相对较长的时间来响应) 将URL的结果返回给客户端 我正在虚拟机上运行此操作,并在Spring中运行Tomcat7。 我会提前道歉,并提到我对Tomcat很新 无论如何

gwt mvp contacts example project gives error when importing it in eclipse

i downloaded the example GWT MVP Contacts project from google gwt mvp tutorial and imported it in eclipse juno. when eclipse loaded it, i get the following error: when i try to run this project the console gives me this error message: Loading modules com.myproject.example.places.Contacts [ERROR] Unable to find 'com/myproject/example/places/Contacts.gwt.xml' on your classpath; co

gwt mvp联系人示例项目在eclipse中导入时出错

我从中下载了示例GWT MVP Contacts项目 谷歌gwt mvp教程 并将其导入eclipse juno中。 当eclipse加载它时,我得到以下错误: 当我尝试运行这个项目时,控制台给了我这个错误信息: 加载模块com.myproject.example.places.Contacts [错误]无法在您的类路径中找到'com / myproject / example / places / Contacts.gwt.xml'; 可能是拼写错误,或者您可能忘记为源代码包含类路径条目? [错误] shell在doStartup方

Problem with running Maven GWT application in Eclipse

I'm trying to create a GWT project through WebAppCreator enabled Maven2. Project creation steps: Create project with WebAppCreator (i'm using gwt-2.3.0) webAppCreator -noant -maven -XnoEclipse -out MyApp com.example.MyApp Import project as existing maven project in eclipse (helios) Enable "Project" -> "Properties" -> "Google" -> "Googl

在Eclipse中运行Maven GWT应用程序的问题

我正试图通过启用Maven2的WebAppCreator创建一个GWT项目。 项目创建步骤: 使用WebAppCreator创建项目(我使用gwt-2.3.0) webAppCreator -noant -maven -XnoEclipse -out MyApp com.example.MyApp 将项目导入为eclipse中的现有maven项目(helios) 启用“项目” - >“属性” - >“谷歌” - >“谷歌网络工具包” - >“使用谷歌网络工具包”复选框 在项目属性“Google” - >“Web应用程序” - >“该项目有一个WAR