StringBuilder(CharSequence cs): Constructs a string builder containing the same characters as the specified CharSequence, plus an extra 16 empty elements trailing the CharSequence.
and
StringBuilder(String s): Creates a string builder whose value is initialized by the specified string, plus an extra 16 empty elements trailing the string.
for the String builder tutorial
and
both link to the constructor need to be corrected
for the javadoc
those 2 line need to be updated
to be
to fix the issue
for the autoboxing tutorial
a link to the generic tutorial would be nice https://dev.java/learn/generics/
and have a nice day :)