whereisfrom

An util library with WhereIsFrom, provides methods for getting information about a method invocation as StackTraceElement.

Install

Gradle

implementation 'dev.alexengrig:whereisfrom:1.1'

Maven

<dependency>
    <groupId>dev.alexengrig</groupId>
    <artifactId>whereisfrom</artifactId>
    <version>1.1</version>
</dependency>

Use case

Example of a simple Spring Boot application:

@SpringBootApplication
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

Usually we have to pass a Class to SpringApplication#run(Class<?> primarySource, String... args) in which this method is called.

We can create an util method that can define a Class - using WhereIsFrom#here():

public class AwareSpringApplication {
    public static ConfigurableApplicationContext run(String... args) {
        try {
            String className = WhereIsFrom.here().getClassName();
            Class<?> targetClass = Class.forName(className);
            return SpringApplication.run(targetClass, args);
        } catch (ClassNotFoundException e) {
            throw new IllegalStateException(e);
        }
    }
}

And use this util method:

@SpringBootApplication
public class AwareApplication {
    public static void main(String[] args) {
        AwareSpringApplication.run(args);
    }
}

Full code in demo project.

License

This project is licensed under Apache License, version 2.0.