In order to find where a class is loaded from by using the ClassPathHunter, we need to initially add the following dependency to our pom.xml:
<dependency> <groupId>org.burningwave</groupId> <artifactId>core</artifactId> <version>12.64.3</version> </dependency>
… And to use Burningwave Core as a Java module, add the following to your module-info.java
:
requires org.burningwave.core;
And now let’s take a look at the code:
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(); } } }
BackgroundExecutor
ClassFactory
ClassHunter
- In depth look to and configuration guide
- USE CASE: how to retrieve all classes of the classpath
- USE CASE: how to retrieve all classes that implement one or more interfaces
- USE CASE: finding all classes that extend a base class
- USE CASE: how to find all classes in a package
- 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 their values
- USE CASE: how to search 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: how to search 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
ClassPathHunter
CodeExecutor
FileSystemItem
FunctionalInterfaceFactory
IterableObjectHelper
JavaMemoryCompiler
PropertyAccessor
UnitSourceGenerator