Understanding the application's architecture

Every application has its own unique structure, or architecture. This architecture provides the overarching organization or framework for the application. For this application, we combine the three classes using a Java 8 stream in the ApplicationDriver class. This class consists of three methods:

• ApplicationDriver: Contains the applications' user input
• performAnalysis: Performs the analysis
• main: Creates the ApplicationDriver instance

The class structure is shown next. The three instance variables are used to control the processing:

public class ApplicationDriver { 
    private String topic; 
    private String subTopic; 
    private int numberOfTweets; 
 
    public ApplicationDriver() { ... } 
    public void performAnalysis() { ...     } 
 
    public static void main(String[] args) { 
        new ApplicationDriver(); 
    } 
} 

The ApplicationDriver constructor follows. A Scanner instance is created and the sentiment analysis model...