GridLayout
A GridLayout allows you to build a table of components, and as you add them, they are placed left-to-right and top-to-bottom in the grid. In the constructor you specify the number of rows and columns that you need, and these are laid out in equal proportions.
//: c14:GridLayout1.java
// Demonstrates GridLayout.
// <applet code=GridLayout1 width=300 height=250></applet>
import javax.swing.*;
import java.awt.*;
import com.bruceeckel.swing.*;
public class GridLayout1 extends JApplet {
public void init() {
Container cp = getContentPane();
cp.setLayout(new GridLayout(7,3));
for(int i = 0; i < 20; i++)
cp.add(new JButton("Button " + i));
}
public static void main(String[] args) {
Console.run(new GridLayout1(), 300, 250);
}
} ///:~
In this case there are 21 slots but only 20 buttons. The last slot is left empty because no “balancing” goes on with a GridLayout.
