GridLayout places components in a cell of a grid. Each cell has the same size, therefore, each component takes up the same space in a container. When the user adjusts the container, the size of each component changes accordingly.
Here are the constructors of the GridLayout class:
| Constructors | Description |
|---|---|
| public GridLayout(int rows, int cols) | Creates a grid layout with a given number of rows and columns. If cols or rows is zero, any numbers of components can be placed in a column or in a row. |
| public GridLayout(int rows, int cols, int hgap, int vgap) | Creates a grid layout with a given number of rows and columns. Beside this, you can initialize the vertical and horizontal gap between each of rows and columns. |
Here is the screenshot of GridLayout demo application.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 | package gridlayoutdemo; import java.awt.*; import javax.swing.*; public class Main { public static void main(String[] args) { JFrame frame = new JFrame("GridLayout Demo"); JButton btn1 = new JButton("Button 1"); JButton btn2 = new JButton("Button 2"); JButton btn3 = new JButton("Button 3"); JButton btn4 = new JButton("Button 4"); JButton btn5 = new JButton("Button 5"); // create grid layout with 3 rows , 2 columns with horizontal // and vertical gap set to 10 JPanel panel = new JPanel(new GridLayout(3,2,10,10)); // add buttons to the panel panel.add(btn1); panel.add(btn2); panel.add(btn3); panel.add(btn4); panel.add(btn5); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(300,150); frame.getContentPane().add(panel); frame.setVisible(true); } } |