Package model.estrutura

Class DataList

java.lang.Object

model.estrutura.DataList

public class DataList
extends Object

Represents a FIFO (First-In-First-Out) data structure implemented as a linked list. This class provides operations to write data to the end of the list and read data from the beginning, following the queue principle.

The implementation maintains references to both head and tail nodes for efficient append operations.

Since:

2024

Field Summary

Fields

Modifier and Type	Field	Description
(package private) Data	head
(package private) Data	last

Constructor Summary

Constructors

Constructor	Description
DataList()	Constructs an empty DataList.

Method Summary

Modifier and Type	Method	Description
String	readData()	Reads and removes the data from the beginning of the FIFO queue.
void	writeData(String data)	Writes (appends) the specified data to the end of the FIFO queue.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

head

Data head

last

Data last

Constructor Details

DataList

public DataList()

Constructs an empty DataList. Both head and last references are initialized to null.

Method Details

writeData

public void writeData(String data)

Writes (appends) the specified data to the end of the FIFO queue. If the list is empty, the new data becomes both head and last. Otherwise, it's appended after the current last node.

Parameters:

data - the string data to be added to the queue

readData

public String readData()

Reads and removes the data from the beginning of the FIFO queue. Returns "empty.!." if the queue is empty. Following FIFO principle, the first element added is the first one removed.

Returns:

the data from the beginning of the queue, or "empty.!." if the queue is empty