For example:

package foo;

import shiva.interfaces.ShivaPlugin;

public class DemoPlugin implements ShivaPlugin
{
    public final static String PLUGIN_DESCRIPTION = "A Plugin Demo";

    public static void start ()
    {
        System.out.println ("==== Hello World! ====");
    }
}

Then in shiva/resources/start.xml, add the following line

    <load plugin="foo.DemoPlugin"/>

Steps to create a plugin

1. Implement shiva.interfaces.ShivaPlugin.
2. Have

   public final static String PLUGIN_DESCRIPTION = "Some Description";

   in the class.
3. Define entry functions

   public final static start (String config)

   or

   public final static start ()

   in the class.
4. Specify the plugin class to be loaded in shiva/resources/start.xml. For example,

      <load plugin="shiva.plugins.ColorMapLoader" config="shiva/resources/colormap.xml"/>

   or

      <load plugin="shiva.plugins.About"/>

   The two styles correspond to two different entry functions defined above. The order of loading the plugins may be important since some plugins depend on other plugins to work.

1. AddCommand Add actions to menu and toolbars.
2. ReaderWriter Add new file filters.

1. implement shiva.interfaces.ShivaPlugin interface 2. have public final static String PLUGIN_DESCRIPTION = "About Shiva"; 3. in shiva/resources/start.xml specify the plugin class:

4. for menu/toolbar command type of plugins, in "start()" function, you do

1. shiva.Main.addCommand ("comandName", command)
2. if it is a toggle comamand and you intend to use it along with other plugins, need to modify shiva/resources/command.xml to indicate command group
3. to add the command to the menu, modify shiva/resources/menu.xml
4. to add the command to the toolbar, modify shiva/resources/toolbar.xml