Which layout manager organizes components in a grid-based structure?

The GridLayout is specifically designed to arrange components in a grid-based structure, which is characterized by rows and columns. This layout manager divides the available space into a specified number of rows and columns, placing components into each cell of the grid based on the order they are added. Each component occupies a single cell, allowing for a straightforward and organized alignment of user interface elements. This is particularly useful for forms or applications where a structured layout is essential for usability and aesthetic appeal.

In contrast, other layout managers serve different purposes. FlowLayout arranges components line by line and wraps them as necessary based on the container's width, making it less structured than a grid. RowLayout organizes components in a single row, without the option for multiple columns or rows, leading to a simpler organization. MatrixLayout, while it sounds similar, is not a standard layout manager in Java and therefore does not apply here. Hence, GridLayout is the only option that effectively organizes components in a grid format.