Intermediate/Advanced Java

 

  • Coding Bat is a website filled with amazing practice problems which give responsive feedback. It also has a large amount of reading to help further your java knowledge: https://codingbat.com/java

 

 

 

 

 

 

 

  • The Java API is a large database with info about all the default Java classes. It features info on all the familiar data types and methods which can be used with them: https://docs.oracle.com/javase/7/docs/api/