JAVA TRUE OR FALSE for each statement

A Java variable may be polymorphic, meaning that it may refer to an object whose type is more specific than the variable's declared type All Java classes can be subclassed es must never override methods of their parent class. 'Aggregation' describes the relationship between various groceries and a shopping basket. Event handling is another control flow construct in Java Number classes have a space overhead compared to their unboxed counterparts Subclass