You don't actually add items to a LayoutManager object. You should set the layout of the Container you want to add your Components to and the GridLayout will put them where they need to be.
Container myContainer = new Container();
int numRows = 3;
int numCols = 2;
GridLayout myLayoutManager = new GridLayout(numRows, numCols);
myContainer.setLayout(myLayoutManager);
// Add some JButtons to the container...
myContainer.add(new JButtons ("1"));
myContainer.add(new JButtons ("2"));
myContainer.add(new JButtons ("3"));
myContainer.add(new JButtons ("4"));
myContainer.add(new JButtons ("5"));
myContainer.add(new JButtons ("6"));
Your final component will look something like the following:
| 1 | 2 |
| 3 | 4 |
| 5 | 6 |
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GridLayout organizes a JPanel like a 2-dimensional array (think battleship board game board) so you can easier add items to it in an organized manner
You don't. GridLayout is one of the layout managers that completely ignores all .setSize and .setPreferredSize method calls. If you want to set the size of buttons in a GridLayout, you should add each button to a JPanel, and add the JPanels to the Container with a GridLayout. This way you can use, for example, a FlowLayout on the JPanel and use a button.setPreferredSize method call to try to keep the buttons a particular size.
A layout manager is an object that is used to organize components in a container.And it is an interface in the java class libraries that describes how a container and a layout manager communicate. There are 5 main Layouts in java :------ 1. FlowLayout 2. BorderLayout 3. CardLayout 4. GridLayout 5. GridbagLayout
just add an extension .java when you save your notepad text file
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