Eclipse:对Java 1.7的沮丧(未绑定的库) [英] Eclipse: Frustration with Java 1.7 (unbound library)
问题描述
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下载此版本的Eclipse: http://www.eclipse.org/downloads/packages/eclipse-ide-java-developers/heliosr
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解压到 c:\program files\eclipse java
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启动Eclipse选择一个工作区
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文件> 新建> Java项目 p>
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项目名称: Hello World 。 JRE:使用执行环境JRE:JavaSE-1.7
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点击下一步,转到库选项卡。唯一的条目是 JRE系统库[JavaSE-1.7](未绑定)。 无限制是什么意思?如何解决?
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点击完成。
预期:全新的项目工作正常。
实际:有两个错误:
项目无法构建,直到构建路径错误被解决HelloWord未知Java问题
未绑定的类路径容器:项目中的JRE系统库[JavaSE-1.7] 'HelloWord'HelloWord构建路径构建路径问题
我在这里做错什么?
更新:也许我的机器上并没有Java 7 JDK。如何确定?
更新2:看起来Java 7实际上还没有出来。甜。
1)找出驱动器上安装了java的位置,打开cmd提示符,转到该位置并运行。 \java -version来找出确切的版本。或者,很简单,检查控制面板中的添加/删除模块。
2)实际安装jdk 7后,需要告诉Eclipse。窗口 - >首选项 - > Java - >已安装的JRE。
I'm having trouble with a brand new project in a brand new installation of Eclipse. Repro steps:
Download this version of Eclipse: http://www.eclipse.org/downloads/packages/eclipse-ide-java-developers/heliosr
Unzip to c:\program files\eclipse java
Launch Eclipse; choose a workspace
File > New > Java Project
Project name: Hello World. JRE: "Use an execution environment JRE: JavaSE-1.7"
Hit Next, go to the Libraries tab. The only entry is JRE System Library [JavaSE-1.7] (unbound). What does "unbound" mean? How do I fix it?
Hit Finish.
Expected: Brand new project works fine.
Actual: There are two errors:
The project cannot be built until build path errors are resolved HelloWord Unknown Java Problem
Unbound classpath container: 'JRE System Library [JavaSE-1.7]' in project 'HelloWord' HelloWord Build path Build Path Problem
What am I doing wrong here?
Update: Perhaps I don't actually have the Java 7 JDK on my machine. How can I be sure?
Update 2: Looks like Java 7 is in fact not out yet. Sweet.
1) Find out where java is installed on your drive, open a cmd prompt, go to that location and run ".\java -version" to find out the exact version. Or, quite simply, check the add/remove module in the control panel.
2) After you actually install jdk 7, you need to tell Eclipse about it. Window -> Preferences -> Java -> Installed JREs.
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