Finding where a class is loaded from
Here the solution:
import java.util.Collection;
import org.burningwave.core.assembler.ComponentContainer;
import org.burningwave.core.assembler.ComponentSupplier;
import org.burningwave.core.classes.ClassPathHunter;
import org.burningwave.core.classes.SearchConfig;
import org.burningwave.core.io.FileSystemItem;
import org.burningwave.core.io.PathHelper;
public class Finder {
public Collection<FileSystemItem> find() {
ComponentSupplier componentSupplier = ComponentContainer.getInstance();
PathHelper pathHelper = componentSupplier.getPathHelper();
ClassPathHunter classPathHunter = componentSupplier.getClassPathHunter();
SearchConfig searchConfig = SearchConfig.forPaths(
//Here you can add all absolute path you want:
//both folders, zip and jar will be recursively scanned.
//For example you can add: "C:\\Users\\user\\.m2"
//With the line below the search will be executed on runtime class paths
pathHelper.getMainClassPaths()
).addFileFilter(
FileSystemItem.Criteria.forAllFileThat(fileSystemItem -> {
JavaClass javaClass = fileSystemItem.toJavaClass();
return javaClass != null && javaClass.getName().equals(Finder.class.getName());
})
);
try(ClassPathHunter.SearchResult searchResult = classPathHunter.findBy(searchConfig)) {
return searchResult.getClassPaths();
}
}
}ClassFactory
ClassHunter
- In depth look to and configuration guide
- USE CASE: retrieving all classes of the classpath
- USE CASE: retrieving all classes that implement one or more interfaces
- USE CASE: finding all classes that extend a base class
- USE CASE: searching for all classes that have package name that matches a regex
- USE CASE: finding all classes for module name (Java 9 and later)
- USE CASE: finding all annotated classes
- USE CASE: how to scan classes for specific annotations and collect its values
- USE CASE: searching for all classes with a constructor that takes a specific type as first parameter and with at least 2 methods that begin for a given string
- USE CASE: searching for all classes with methods whose name begins for a given string and that takes a specific type as its first parameter
- USE CASE: finding all classes that have at least 2 protected fields