jar | 易学教程

Program 5x slower as a .jar file than when ran in eclipse

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问题 Currently the speed to run a test function is about 5× slower when done with the jar file vs. doing it in Eclipse. How should I install the jar file so the speed is similar? I am using maven. I am using outside dependencies. I just need to know what is the best code for the build (in the pom file) to make it run as fast as possible, with no concern for copy rights. The only thing I need is for the program to work on a machine without maven installed. Also, based on the last time I asked this,

Use local jar as a dependency in my Gradle Java project

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问题 I have a local jar file named mylib.jar . I want to used it as a dependency in my Gradle Java project. This is what I tried: I created a libs/ folder under project root. I put the jar file under libs/ folder. MyProject ->libs/mylib.jar ->build.gradle ->src/... In my build.gradle: apply plugin: 'java-library' group 'com.my.app' version '1.0-SNAPSHOT' sourceCompatibility = 1.8 repositories { mavenCentral() flatDir { dirs 'libs' } } dependencies { testCompile group: 'junit', name: 'junit',

Creating Extensible Applications using service-loaders according to a singleton design pattern

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问题 I'm working on project on IntelliJ IDEA and I want to add support to Extensible Applications in my java application. The way to do it is, creating a jar file in this jar file there should be a META-INF/services directory, inside this directory, I need to add a file whose name contains the same name as the fully-qualified name of the interface which provides the service, and in that file it should have the fully-qualified name of the implementations of that interface. This is the encrypt and

Java project with Gradle and building jar file in Intellij IDEA - how to?

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问题 Is there anywhere a tutorial on how to create Java project with Gradle and then build the jar file? I'm running into various problems with that. When I create Java project and then add Gradle with File -> New -> Module -> Gradle -> ... then I get some errors about Java EE websocket's not available (I'm using Ultimate Edition) but nevermind about that, I managed to create that project by selecting File -> New -> Project... -> Gradle -> ... and now I have my Java project with Gradle working

Is it possible to rename a maven jar-with-dependencies?

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问题 I'm currently using the jar-with-dependencies assembly to create such a jar. However, the name of my jar is a bit long. Since this jar is being used by RPG programs on an AS400, I'd like to shorten it to make life a bit easier for those developers. But, other than by hand, I've not found a way to rename the jar from the usual project-name-version-classifier-jar-with-dependencies.jar . I'd like something like project-name-version-classifier-full.jar Is there anyway to do this without basically

How to get the path and name of the current running jar?

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问题 There are plenty of folders that let you find the folder that the running jar is in, but how do I get the running jar? For example, if foo.jar is in C:/FOO/foo.jar, then how would I get the path C:/FOO/foo.jar, not C:/FOO. Also, I have no idea A: if the jar was moved to a different folder, B: If my jar was renamed, and C: if there are other jars in the same folder as mine. I want to get a File object of the currently running jar, which I am then going to be using (in some way) to replace that

Provider org.glassfish.json.JsonProviderImpl not found at javax.json.spi.JsonProvider.provider(JsonProvider.java:97)

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问题 How to run Java API for JSON Processing(JSR 374) in eclipse? I am trying to parse JSON string to JsonParser(javax.json.stream.JsonParser). Also added javax.json-api-1.0.jar in the build path. At runtime, there is an exception. My code is import java.io.StringReader; import javax.json.Json; import javax.json.JsonReader; import javax.json.JsonStructure; import javax.json.stream.JsonParser; import javax.json.stream.JsonParser.Event; import javax.json.JsonReader; import javax.json.JsonStructure;

Switched from Hibernate 4.3.1 to 5.0.6 and Transaction is gone

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问题 I am working on a Hibernate project.I had used Hibernate 4.3.1 libraries of Netbeans. Then I needed to use Apache Lucene for fulltext searching. To be able to use Lucene I needed to switch to Hibernate 5.x jars.I can define a new Transaction object but wasRollecBack method of Transaction class is not working. I used this method in several places and now I'm stuck. When I look at javadoc of Hibernate 5.0.6 there is nothing like org.hibernate.transaction . There is org.hibernate.engine

Switched from Hibernate 4.3.1 to 5.0.6 and Transaction is gone

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Beyond compare比较jar文件

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写了个小demo但是因为重装系统被格式化了，着急啊，难道要重写？幸亏在代码托管平台备份了早期的代码，但是后期的代码还没上传，只有后期的apk文件，于是想到能不能通过这两者找到最后阶段添加的代码呢？？觉得只要能比较dex转换的jar文件应该就可以知道新写的代码，于是网上搜了一下找到了 Beyond Compare 这个神器。下载地址： http://www.scootersoftware.com/download.php 实际使用时由于jar包里都是class文件比较的结果都是乱码，所以需要导入格式化文件将class乱码反编译成对应的java代码。下载地址： windows 下的官网下载地址： http://www.scootersoftware.com/download.php?zz=kb_moreformats_win linux 扩展的官网下载地址： http://www.scootersoftware.com/download.php?zz=kb_moreformats_nix 下载后打开软件，点击工具（Tools）-->导入设置（Import Setting）-->选择下载的文件，导入即可，关闭软件，重新打开，重新比较两个jar，会发现没有乱码了来源： oschina 链接： https://my.oschina.net/u/559847/blog