buildpath

问题 My java file jdbc11.java was compiled successfully with javac jdbc11.java command in cmd, after that when I tried to to run java jdbc11 I got this exception: java.lang.ClassNotFoundException: com.mysql.jdbc:Driver refering to this code in the file Class.forName("com.mysql.jdbc.Driver"); , when I tried it in eclipse ,I added to "Java Build Path" the external jar : mysql-connector-java-5.1.20-bin.jar and it run successfully . in case I didn't fix it with eclipse what should I done in the first

问题 In eclipse I have an error related to my build path. The error: Project 'XX' is missing required library: 'middlegen-2.1.jar' But the library is deleted before the build path configuration. Is there perhaps a problem with cache or so? Has anyone an idea why eclipse say that the library is required even though the library was deleted before the build path configuration. With Best 回答1: I guess you've deleted the library from a directory, but you've not updated the project Build Path . Right

问题 I've imported an existing maven project into Eclipse. I tried to set up the configurations for a JUnit test, and my project wouldn't come up as a testable project. When I typed in the project name manually, I was given the message: Specified project is not a java project I've also noticed that when typing code and trying to call a method e.g. "System.out" a message pops up when I type the period, saying: This compilation unit is not on the build path of a java project Additionally, there are

问题 Already seen: NoClassDefFoundError Android with ActionBarActivity and ActionBarActivity catch an error on Phone I am trying to use ActionBarCompact in my project. I have linked android-support-v7 project as well as its jar in my project following and checking the steps from lots of sources, but still I am unable to deal with the problem. When I built my project, there is no error, but there is exception at runtime. Don't know why class is not detected. Please tell me what is wrong. Thanks.

问题 I try to do it the following way: Right click on the name of the project. Click on Build Path in the drop dawn menu. Click on "Configure Build Path" And then I do not know what to do. Should I select "Source", "Projects", "Libraries", "Order and Export"? In "Libraries" I have "Add JARs..." and "Add External JARs...". What should I select? (I have already a .jar file in the lib folder of my project.) ADDED: If I click on "Add JARs" in the "Libraries" tab, I see the "lib" sub-folder but if I go

问题 I'm working on a team project. I included a .jar file in Build Path and committed to SVN. When I updated code in my working directory, a new folder appears in Eclipse called "Android Dependencies". If I let it be there, my program runs; If I remove it, my program reports a ClassNotFoundException . Now how to fix this ClassNotFoundException ? 回答1: Android Dependencies is a virtual folder where Eclipse shows what JAR files the project depends on. It's not a physical folder; you won't find it on

问题 I'm working on a team project. I included a .jar file in Build Path and committed to SVN. When I updated code in my working directory, a new folder appears in Eclipse called "Android Dependencies". If I let it be there, my program runs; If I remove it, my program reports a ClassNotFoundException . Now how to fix this ClassNotFoundException ? 回答1: Android Dependencies is a virtual folder where Eclipse shows what JAR files the project depends on. It's not a physical folder; you won't find it on

问题 What is the use of Order And Export tab in Java Build Path 回答1: It allows you to do two things: Determine in which order projects and libraries appear in the classpath. If there are any duplicate classes, this determines which version is loaded Determine which projects and libraries will be exported and thus available in other projects that depend on this one. 回答2: Got some hint here for you: Order and Export. Order in which projects and libraries appear in the build path and the default

问题 I added a Student.jar into my Build Path in my eclipse like this- Right click on the project->BuildPath->Configure Build Path->Libraries->Add External Jars There is one class named StudentTest in Student.jar file. When I was debugging my code in eclipse, I stepped into that StudentTest class in the Student.jar . And after that eclipse shows me like this- The JAR file S:\some_location\Student.jar has no source attachment. You can attach the source by clicking Attach Source below Now I am not

问题 I added a Student.jar into my Build Path in my eclipse like this- Right click on the project->BuildPath->Configure Build Path->Libraries->Add External Jars There is one class named StudentTest in Student.jar file. When I was debugging my code in eclipse, I stepped into that StudentTest class in the Student.jar . And after that eclipse shows me like this- The JAR file S:\some_location\Student.jar has no source attachment. You can attach the source by clicking Attach Source below Now I am not