Differentiate between an array and an arraylist.
Differentiate between hashmap and hashtable.
Differentiate between list and map.
Differentiate between comparable and comparator.
Differentiate between arraylist and vector.
Differentiate between priorityqueue and treeset.
Differentiate between arraylist and linkedlist.
What is the use of tee command?
Describe the usage and functionality of the command rm –r * in unix?
How can you see the command line history?
Which unix command to make a new directory?
What do know about tee command and its usage?
Which command can you use to find the currently running process in unix server?
What does the “echo” command do?
Give the command for finding the current date.