s/adaptor/adapter/g
exactly one blank line before and after package statements
typos
javadoc typo fixes from Sergey Malenkov; https://bugs.openjdk.java.net/browse/JDK-8022746
No spaces separating one-character type parameters
whitespace
javadoc style
remove bad @param
optimize access to local ArrayLists
coding style
punctuation
<tt> -> {@code
Create src/jdk7 package
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