ArcGIS Engine Developer Guide

BUILDING A COMMAND-LINE JAVA APPLICATION
1. First, insert some logic to ensure that you have the correct number of arguments
in the form of an if/else code block.
This exercise does not implement any logic that
determines whether the arguments being passed
are valid strings or datapaths. This validation
process may be beneficial when developing a
production application.
/*
* Description:
* Main Method - Application Entry Point
*/
public static void main(String[] args) {
if(args.length != 2){
System.out.println( "Tin to Point: ArcGIS Engine Developer
Scenario");
System.out.println("Usage: TintoPoint [Path-to-tin] [Path-to-outputshapefile]");
System.exit(0);
}else{
System.out.println( "Tin to Point: ArcGIS Engine Developer Sample");
String inDataset = args[0];
String outDataset = args[1];
This application takes two arguments: an input full path to your TIN dataset and
a full path to the generated output shapefile. Once the application determines the
correct amount of arguments, they can be split into the path and name format
required by the tinToPoint() method generated earlier.
2. Add in the following code below the if/else code break you just created.
String inDataPath = inDataset.substring( 0,
inDataset.lastIndexOf(File.separator));
String inDataName = inDataset.substring(
inDataset.lastIndexOf(File.separator) + 1);
String outDataPath = outDataset.substring( 0,
outDataset.lastIndexOf(File.separator));
String outDataName = outDataset.substring(
outDataset.lastIndexOf(File.separator) + 1);
The next step in creating the main method is to initialize the programming environment.
In the ArcGIS Java API, this is handled by calling the static class
EngineInitializer. This class is a facade class exposed by the Java API to ensure
optimal use of native ArcObjects for Java. Following that, the static
licenseCheckOut() method described above must be called.
3. Add the following code to the main method.
EngineInitializer.initilizeEngine();
licenseCheckOut();
4. The last step is to call the static worker method tintoPoint() and pass in the
string parameters.
tinToPoint(inDataPath, inDataName, outDataPath, outDataName);
try {
aoInit.shutdown();
} catch (IOException ex) {
ex.printStackTrace();
}
System.out.println("Tin to Point - Done");
}
}
Chapter 6 • Developer scenarios • 423