looks like there is a missing "Public" word in the license text added in two files (created by JDK-8294982)

src/java.base/share/classes/jdk/internal/classfile/attribute/StackMapTableAttribute.java
src/java.base/share/classes/jdk/internal/classfile/constantpool/ConstantPool.java

for these files, the license text is

 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General License version 2 only, as

while for other files the license text is

 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as