cant make patches with java 6

[javac] org\fusesource\jansi\internal\Kernel32.class(org\fusesource\jansi\internal:Kernel32.clas
s): warning: Cannot find annotation method 'conditional()' in type 'org.fusesource.hawtjni.runtime.JniClass': class file for org.fusesource.hawtjni.runtime.JniClass not found
[javac] org\fusesource\jansi\internal\Kernel32.class(org\fusesource\jansi\internal:Kernel32.class): warning: Cannot find annotation method 'flags()' in type 'org.fusesource.hawtjni.runtime.JniField': class file for org.fusesource.hawtjni.runtime.JniField not found
[javac] An exception has occurred in the compiler (1.6.0_45). Please file a bug at the Java Developer Connection (http://java.sun.com/webapps/bugreport) after checking the Bug Parade for duplicates. Include your program and the following diagnostic in your report. Thank you.
[javac] com.sun.tools.javac.code.Symbol$CompletionFailure: class file for org.fusesource.hawtjni.runtime.FieldFlag not found