Java Collections and Linked Lists Implementation
What does our text say about the collection classes used in Java?
3. So that the collection classes can hold different classes of objects, our text:
What could the StackUnderflowException be thrown by?
4. Depending on circumstances, the StackUnderflowException could be thrown by the following stack method(s):
What does the link attribute of the last node in a linked list implementation hold?
5. In our linked list implementation, the link attribute of the last node on a list holds:
What is the name of the class used to provide nodes for linked lists?
6. The name of the class we use to provide the nodes for our linked lists is:
What will be the result of the given code with a linked list of Strings?
7. Suppose we have a linked list of Strings named presidents. What would be the result of the following code? System.out.printin(presidents.getLink().getInfo());
Answers:
3. D) uses the Java generics mechanism.
4. A) push and pop.
5. C) the value null.
6. A) Node.
7. The code will result in a compilation error.
Java provides a wide range of collection classes that allow developers to store and manipulate different types of objects. These collection classes are versatile and can hold objects of various classes. Our text emphasizes the use of Java generics mechanism to achieve this flexibility in handling different classes of objects efficiently.
When it comes to the StackUnderflowException, this exception can be thrown by the push and pop methods of a stack. These methods are crucial in adding and removing elements from a stack, and under certain circumstances, they can lead to a StackUnderflowException being thrown.
In a linked list implementation, the link attribute of the last node on a list holds the value null. This indicates the end of the linked list and signifies that there are no more nodes to traverse in that direction.
The class used to provide nodes for linked lists is typically named Node. Nodes are fundamental building blocks in linked list implementations and are responsible for storing data and pointing to the next node in the list.
Regarding the given code with a linked list of Strings, the code will result in a compilation error. The code attempts to access methods in a way that does not align with the syntax of working with linked lists in Java. The correct approach would involve using methods like getFirst() to access the information stored in nodes of the linked list.