The “ConcurrentLinkedQueue” class is contained in the “java.util.concurrent” package and is utilized to implement a queue.

An ArrayList in Java can be synchronized using the “Collections.synchronizedList()” method, or via “CopyOnWriteArrayList”.

The “int cannot be dereferenced” error in Java can be resolved by utilizing an operator instead of calling a method on the primitive data types.

The Arithmetic Exceptions can be faced upon dividing a number by zero, or division of non-terminating big decimals and can be resolved via “try/catch” blocks.

Decimals can be formatted in currency format via the “getCurrencyInstance()” method of the “NumberFormat” class based on the default or specified locale.

The max/min of a list can be fetched via the “Collections.max()” and “Collections.min()” methods, the Java 8 streams, or via the “for” loop.