JAVAFX BASICS - Introduction to Java Programming: Comprehensive Version - page 555

14.10.2 GridPane
A GridPane arranges nodes in a grid (matrix) formation. The nodes are placed in the speci-
fied column and row indices. The class diagram for GridPane is shown in Figure 14.18.

The getter and setter methods for property values
and a getter for property itself are provided in the class,
but omitted in the UML diagram for brevity.

javafx.scene.layout.GridPane

-alignment: ObjectProperty<Pos>
-gridLinesVisible:
BooleanProperty
-hgap: DoubleProperty
-vgap: DoubleProperty

The overall alignment of the content in this pane (default: Pos.LEFT ).
Is the grid line visible? (default: false )

The horizontal gap between the nodes (default: 0 ).
The vertical gap between the nodes (default: 0 ).

+GridPane()
+add(child: Node, columnIndex:
int, rowIndex: int): void
+addColumn(columnIndex: int,
children: Node...): void
+addRow(rowIndex: int,
children: Node...): void
+getColumnIndex(child: Node):
int
+setColumnIndex(child: Node,
columnIndex: int): void
+getRowIndex(child:Node): int
+setRowIndex(child: Node,
rowIndex: int): void
+setHalighnment(child: Node,
value: HPos): void
+setValighnment(child: Node,
value: VPos): void

Creates a GridPane .
Adds a node to the specified column and row.

Adds multiple nodes to the specified column.

Adds multiple nodes to the specified row.

Returns the column index for the specified node.

Sets a node to a new column. This method repositions the node.

Returns the row index for the specified node.
Sets a node to a new row. This method repositions the node.

Sets the horizontal alignment for the child in the cell.

Sets the vertical alignment for the child in the cell.

F IGURE 14.18

GridPane lays out nodes in the specified cell in a grid.

Listing 14.11 gives a program that demonstrates GridPane . The program is similar to the
one in Listing 14.10, except that it adds three labels and three text fields, and a button to the
specified location in a grid, as shown in Figure 14.19.

F IGURE 14.19

The GridPane places the nodes in a grid with a specified column and row

indices.

L ISTING 14.11

ShowGridPane.java
1 import javafx.application.Application;
2 import javafx.geometry.HPos;
3 import javafx.geometry.Insets;