accesscontrolexception java。伊奥。从“user.dir”读取时的文件权限

Question

阅读文本文件时，我发现以下错误

Test - Exception in thread "Thread-0" java.security.AccessControlException: access denied ("java.io.FilePermission" "C:CUR_SDKPkbZ17INTWDPsolWDP5_NI_PD24Towary.txt" "read") at zad2.Czytaj.run(Czytaj.java:25)

String fname = System.getProperty("user.dir")+"/Towary.txt";
try (BufferedReader scan = new BufferedReader(new FileReader(fname))) 

练习是从eclipse工作区目录a中读取。txt文件