There aren't very many Java job offers in Trier; the current count is just 7. Have you tried neighbouring regions? Jobs in the subcategories Software Industry and Software Project Management are at the moment the most common. For this job, it's a good idea to know about topics such as Java Platform, Standard Edition, Java EE and JUnit.
Junior applicants should spend time looking into this area, where 28% of Java job offers are ideal. That's 2 jobs to choose from! Despite the current lack of suitable internship vacancies, there may be appealing opportunities available in related topics. There are no startup employers advertising Java job offers on Jobspotting at the moment. Why not have a look at jobs in another country to compare and contrast opportunities. Just use the Explore tab.