All the filter cares about is a stream of data - not necessarily if it is from a file. Make documentation reflect that.

git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@271661 13f79535-47bb-0310-9956-ffa450edef68

proposal/sandbox/filterreaders/src/main/org/apache/tools/ant/filters/ClassConstants.java

@@ -63,7 +63,7 @@ import org.apache.bcel.*;
 import org.apache.bcel.classfile.*;
 
 /**
- * Assemble the constants declared in a file in
+ * Assemble the constants declared in a Java class in
  * key1=value1(line separator)key2=value2
  * format
  *