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\documentclass[12pt,a4paper]{article}
\usepackage[utf8]{inputenc}
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\title{Howework 1 -- Advanced Java Programming}

\author{Claudio Maggioni}

\begin{document}
\maketitle

\section{Exercise A}

\begin{itemize}
  \item
    1: True
  \item
    2: False (Required only if the class implements Comparable)
  \item
    3: True
  \item
    4: False (== for objects checks for reference equality)
  \item
    5: False (it is indeed implemented by default - i.e.~in Object, but
    the default implementation checks reference equality only)
  \item
    6: False (a child class of Tiger may include additional fields that
    are mutable. However, all properties and behaviour accessible via a
    reference of Tiger type is immutable)
  \item
    7: False (the class is not public)
  \item
    8: False (classes in the same package can read the name field)
  \item
    9: True (the constructor to implement must explicitly call Tiger's
    constructor with super)
  \item
    10: False (the declared type is Number, the runtime type is Integer)
\end{itemize}

\section{Exercise B}

\begin{itemize}
  \item
    1: False (the only `collection' data structure based over an unboxed
    primitive type is the array)
  \item
    2: True (if the hashCode() return value changes after the mutation then the
    implementation of hashMap is unable to recognize it was inserted previously)
  \item
    3: True
  \item
    4: True
  \item
    5: False (finally blocks are always evaluated)
\end{itemize}

\section{Exercise C}

\begin{itemize}
  \item 1: True
  \item 2: False
  \item 3: True
  \item 4: True (more precisely, double dispatch or 'virtual table' invocations
    are used only for invoking the method in the class matching the object's
    dynamic type)
  \item 5: True (as the method called depends on the runtime or dynamic type of
    the caller object)
\end{itemize}

\end{document}