使用System.out.println(java.util.Arrays.asList(sun.misc.Launcher.getBootstrapClassPath().getURLs()).toString());打印引导类加载器加载类路径时,报"Access restriction: The method getBootstrapClassPath()...",意思就是这个方法受规则限制,无法访问。之后用了下面第三种方案得到了解决。
解决方案1:
Eclipse 默认把这些受访问限制的API设成了ERROR。
Windows -> Preferences -> Java -> Compiler -> Errors/Warnings ->
Deprecated and trstricted API -> Forbidden reference (access rules): -> change to warning
解决方案2:
只需要在project build path中先移除JRE System Library,再添加库JRE System Library,重新编译后就一切正常了。
解决方案3:
工程上右键->工程属性->java builder path->Libraries标签,点击JRE System Library里面的Access rules,add sun/** 为accessible,如果该项存在,就edit。
解决方案4:
Windows -> Preferences -> Java -> Installed JREs -> 选择用的JDK -> Edit -> Add External JARs
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