de.julielab.java.utilities.classpath

Class JarLoader

java.lang.Object

de.julielab.java.utilities.classpath.JarLoader

public class JarLoader
extends Object

This class adds JAR files to the classpath at runtime. There are two different ways chosen depending on the JVM version, up to 8 or beginning with 9. The Java 9 approach requires an instrumentation agent which is located at Agent. The agent must be included in a JAR that registers it by the Agent-Class property of its MANIFEST.MF file. This class can either used inside the julielab-java-utilities JAR file directly, which has the Agent-Class property set for its manifest. When building a fat JAR, e.g. with the Maven assembly or Maven shadow plugins, containing this class, the fat JAR must have the property itself.

Constructor Summary

Constructors

Constructor and Description
JarLoader()

Method Summary

Modifier and Type	Method and Description
static void	addJarToClassPath(File jarFile)
static void	loadLibraryWithURLClassloader(File jar) https://stackoverflow.com/questions/27187566/load-jar-dynamically-at-runtime

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JarLoader

public JarLoader()

Method Detail

addJarToClassPath

public static void addJarToClassPath(File jarFile)

loadLibraryWithURLClassloader

public static void loadLibraryWithURLClassloader(File jar)
                                          throws Exception

https://stackoverflow.com/questions/27187566/load-jar-dynamically-at-runtime

WARNING: This only works up to Java 8. Beginning with Java 9, the system classloader is not an URLClassLoader any more. Adds the supplied Java Archive library to java.class.path. This is benign if the library is already loaded.

Throws:

Exception