Java 由于对所需库的限制，JFrame 受到限制
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JFrame Restricted due to restriction on required library
提问by VeXeD_1357
I am making a new Java project in eclipse. The only problem is that I didn't even get five lines in before I got an error that reads:
我正在 eclipse 中创建一个新的 Java 项目。唯一的问题是，在出现错误之前，我什至没有输入五行：
Access Restriction: The type JFrame is not accessible due to restriction on
required library C:\Program Files\Java\jre8\lib\rt.jar
How do I fix this issue? Please forgive me if someone already asked a similar question. I am still a beginner.
我该如何解决这个问题？如果有人已经问过类似的问题，请原谅我。我还是个初学者。
回答by Simiil
Try removing and readding the Java System Library to your project:
尝试删除 Java 系统库并将其读取到您的项目中：
Project Properties -> Build Path -> Libraries -> Remove , and then Add Library -> JRE System Library
项目属性 -> 构建路径 -> 库 -> 删除，然后添加库 -> JRE 系统库
Try closing and reopening the Dialog after removing the the Library
删除库后尝试关闭并重新打开对话框
