Thinker questions

• why does return type of values in iterator not a set?
• Why static block are executed later?
• How i can add a node under a node using ObjectContentManager?
• Making a field `Final` in an Immutable class?
• UserAgent in JSOUP?
• How to configure the log4j output file path in web.xml and log4j.properties?
• How can i restrict my clients with selected methods from the class?
• What is meant by number of buckets in the HashMap?
• How to monitor a Java program using Jconsole?
• How should I have explained the difference between an Interface and an Abstract class?

Thinker answers