DefaultTableModel

DefaultTableModel is a class in the Java Swing library, specifically part of the javax.swing.table package. It is a concrete implementation of the TableModel interface, which is used to manage the data for a JTable component. The DefaultTableModel class provides a default implementation of the TableModel interface, allowing developers to easily create and manipulate tables in their Java applications.

One of the key features of DefaultTableModel is its ability to store data in a two-dimensional array, where each element in the array represents a cell in the table. This makes it straightforward to populate a table with data and to retrieve data from specific cells. Additionally, DefaultTableModel supports dynamic changes to the table's structure, such as adding or removing rows and columns, which can be particularly useful in applications where the data is not static.

Another important aspect of DefaultTableModel is its support for event handling. It extends the AbstractTableModel class, which provides basic support for event handling, allowing developers to listen for changes to the table's data and structure. This can be useful for implementing features such as data validation or updating other parts of the user interface in response to changes in the table.

In summary, DefaultTableModel is a versatile and easy-to-use class for managing the data in a JTable component. Its support for dynamic changes to the table's structure and its event handling capabilities make it a valuable tool for developers working with tables in Java Swing applications.