Question

java中的问题

我在导入swing.*;这个包出现了如下提示：
Multiple markers at this line
- Access restriction: The constructor JFrame() is not accessible due to restriction on required library C:
\Program Files\Java\jre1.7.0\lib\rt.jar
- Access restriction: The type JFrame is not accessible due to restriction on required library C:\Program Files
\Java\jre1.7.0\lib\rt.jar
- Access restriction: The type JFrame is not accessible due to restriction on required library C:\Program Files
\Java\jre1.7.0\lib\rt.jar
--------------------------------------------------------------------
源码如下：
import javax.swing.JFrame;
public class asdf {
public static void main(String[] args) {
JFrame f=new JFrame();
}
}
哪位大侠知道，快来帮帮忙吧！
感激不尽！

Answer 1

检查一下你的classpath，如果还是不行的话那就重新装一下java

Answer 2

你的path等没设置好~

Answer 3

http://monlyu.javaeye.com/blog/448302
可能帮到你