Name the below structure:

1. One dimensional array
2. Two Dimensional array with 4 rows and 5 columns
3. Three dimensional array
4. Two Dimensional array with 5 rows and 4 columns

"Java compiled code (byte code) can run on all operating systems"
— Name the feature.

1. Robust and Secure
2. Object Oriented
3. Platform Independent
4. Multithreaded

Identify the operator that gets the highest precedence while evaluating the given expression:

a + b % c * d - e

1. +
2. %
3. -
4. *

Which of the following is a valid java keyword?

1. If
2. BOOLEAN
3. static
4. Switch