Getting below error for each and every rule in Vote.drl . Using Drools 5 and eclipse 3.4.  
 
Trying this example
http://www.developer.com/java/ent/article.php/10933_3821101_3
 
 
Rule Compilation error : [Rule name='VeryGoodValue – between 6-9']
 com/examples/Rule_VeryGoodValue_–_between_6_9_0.java (3:79) : Syntax error on tokens, delete these tokens
 com/examples/Rule_VeryGoodValue_–_between_6_9_0.java (3:92) : The public type Rule_VeryGoodValue_ must be defined in its own file
 com/examples/Rule_VeryGoodValue_–_between_6_9_0.java (3:127) : Syntax error, insert "}" to complete Block
 com/examples/Rule_VeryGoodValue_–_between_6_9_0.java (4:134) : Syntax error on tokens, delete these tokens
 com/examples/Rule_VeryGoodValue_–_between_6_9_0.java (6:202) : Syntax error on token "void", @ expected
 com/examples/Rule_VeryGoodValue_–_between_6_9_0.java (6:234) : Syntax error on token "KnowledgeHelper", ( expected after this token
 com/examples/Rule_VeryGoodValue_–_between_6_9_0.java (6:284) : Syntax error on token "m", delete this token
 com/examples/Rule_VeryGoodValue_–_between_6_9_0.java (6:287) : Syntax error on token(s), misplaced construct(s)
 com/examples/Rule_VeryGoodValue_–_between_6_9_0.java (6:309) : Syntax error, insert ")" to complete MethodInvocation
 com/examples/Rule_VeryGoodValue_–_between_6_9_0.java (6:309) : Syntax error, insert ")" to complete SingleMemberAnnotation
 com/examples/Rule_VeryGoodValue_–_between_6_9_0.java (6:309) : Syntax error, insert "enum Identifier" to complete EnumHeaderName
 com/examples/Rule_VeryGoodValue_–_between_6_9_0.java (6:309) : Syntax error, insert "EnumBody" to complete EnumDeclaration
 
Vote.drl
 
package com.examples
 
import com.examples.drools.Vote;
 
rule "WrongValue – less than 0"
     when
          m : Vote( average < 0.0, vote : vote )
     then         
          m.setAverage(0.0f);
          update( m );              
end
 
rule "WrongValue – bigger than 10"
     when
          m : Vote( average > 10.0, vote : vote )
     then         
          m.setAverage(10.0f);
          update( m );              
end
 
rule "BadValue – between 0-3"
     when
          m : Vote( average >= 0.0 && average <=3.0, vote : vote )
     then
           m.setVote("Bad!");
          System.out.println( m.getVote() );
end
 
rule "GoodValue – between 3-6"
     when
          m : Vote( average >3.0 && average <=6.0, vote : vote )
     then
           m.setVote("Good!");
          System.out.println( m.getVote() );
end
 
rule "VeryGoodValue – between 6-9"
     when
          m : Vote( average >6.0 && average <=9.0, vote : vote )
     then
           m.setVote("Very Good!");
          System.out.println( m.getVote() );
end
 
rule "ExcellentValue – between 9-10"
     when
          m : Vote( average >9.0 && average <=10.0, vote : vote )
     then
           m.setVote("Excellent!");
          System.out.println( m.getVote() );
end