Junior java developer - 580

I have been taking online course on Java. I've done many interesting tasks. I would like to improve my Java skills in practice field, to enlarge my knowledges and understanding of this programming language. Skills Java, Git, SQL, JUnit, REST, OOP Highlights I have knowledge of Java Syntax, Collections, Multithreading, etc. Also I have basic skills of SQL, Git(GitHub), REST, JUnit.