Phone Interview: What needs to be overriden to make an object a key in hashmap? Give me some examples of Lists? Give me some examples of Sets. Explain how a Map works Tell me some access modifiers. What is needed to make an object a Key apart from overriding equals and hashcode. What is a property of a primitive Tell me some properties of a String Explain how an Arraylist works Abstract vs Inheritance What does a class need to let it be run as a thread How do you create a thread When is finally used / what is it? What is a synchronised block What are checked and unchecked exceptions. Why is an ArrayList faster than a Linked List First round in person Maths: Worked out general rule based on given paramaters Code: Simple Java problems (palindrome, output value when number is a multiple, etc. look in a java interview book, cracking the coding interview is good) Riddle: Worst part, again will be something in the cracking the coding interview book. Second round. Much like the first + HR bit.