Metaspace OOM

Class1.java

import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.ArrayList;
import java.util.List;

public class Class1 {
    public static void main(String[] args) throws MalformedURLException, ClassNotFoundException {
        final List<Class<?>> classes = new ArrayList<>();
        while (true) {
            classes.add(new URLClassLoader(
                    new URL[]{
                            new URL("http://central.maven.org/maven2/com/google/guava/guava/27.0.1-jre/guava-27.0.1-jre.jar")
                    }).loadClass("com.google.common.base.Optional"));
        }
    }
}