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via Oracle Community by 843793, 1 year ago
via Google Groups by Matthew Jones, 2 years ago
invalid port range: :21
via Stack Overflow by user3115251
, 2 years ago
invalid host wildcard specification
java.lang.IllegalArgumentException: invalid port range: :21	at java.net.SocketPermission.init(SocketPermission.java:341)	at java.net.SocketPermission.(SocketPermission.java:206)	at sun.net.www.protocol.ftp.FtpURLConnection.getPermission(FtpURLConnection.java:175)	at java.net.URLClassLoader.getPermissions(URLClassLoader.java:427)	at java.security.SecureClassLoader.getProtectionDomain(SecureClassLoader.java:154)	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:109)	at java.net.URLClassLoader.defineClass(URLClassLoader.java:249)	at java.net.URLClassLoader.access$1(URLClassLoader.java:217)	at java.net.URLClassLoader$1.run(URLClassLoader.java:198)	at java.security.AccessController.doPrivileged(Native Method)	at java.net.URLClassLoader.findClass(URLClassLoader.java:192)	at java.lang.ClassLoader.loadClass(ClassLoader.java:298)	at java.lang.ClassLoader.loadClass(ClassLoader.java:255)	at DynamicExtension.main(DynamicExtension.java:15)