Fails because of the life cycle of abstract classes

gistfile1.java

public class AnonInnerClass {
    private final List<Job> jobsCache = new ArrayList<>();
    
    private Class<? extends Job> getClass(final String s) {
        final Job job = new Job() {
            @Override
            public void execute(JobExecutionContext context) throws JobExecutionException {
                System.out.println(s);
            }
        };
        
        jobsCache.add(job);

        return job.getClass();
    }

    private Job constructInstance(Class<? extends Job> jobClass) {
        try {
            return jobClass.getConstructor().newInstance();
        } catch (InstantiationException | IllegalAccessException | IllegalArgumentException | InvocationTargetException
                | NoSuchMethodException | SecurityException e) {
            throw new IllegalArgumentException(e);
        }
    }

    @Test
    public void test() throws JobExecutionException {
        constructInstance(getClass("One")).execute(null);
    }
}