Hypnojava

the difference between String, StringBuilder, and StringBuffer

What is multithreading, and how is it implemented in Java

Explaining about exceptions in Java. What is the difference between checked and unchecked exceptions

difference between HashSet and TreeSet

Differentiate between ArrayList and LinkedList

Java Collections Framework and discuss its main interfaces

Explaining the difference between method overloading and method overriding

Java Constructors

concept of garbage collection in Java

What is the purpose of the static keyword

Differentiate between == and equals() methods in Java

What is the significance of the final keyword in Java

Why Is Java Platform Independent?

Short explainign the difference between JDK, JRE, and JVM

What are the main features of Java

What is Java, and why is it not considered a pure object-oriented language?