1. What is the range of short data type in Java?
Answer :- 3. -32768 to 32767
short datatype ranges from -32768 to 32767. It occupies 16 bits in memory.
2.Which of these values can a boolean variable contain?
Answer:- 2. True & False
Boolean datatype contain both True and False value.
A variable which is defined as Boolean, the value may be True or False.
3.Which one is a valid declaration of a boolean?
Answer:- 3. boolean b3 = false;
Boolean datatype can be declared as only true or false.
4.Which is a reserved word in the Java programming language?
Answer:- 1. native
"native" is a reserved keyword in java programming language.
It is used to modify a method declaration.
5.Which one of the following will declare an array and initialize it with five numbers?
Answer:- 3. int [] a = {23,22,21,20,19};
Here you may think option 2 is also correct answer, but let me tell you it is perfect declaration of Array but there is no initialisation.
6.What is the numerical range of a char datatype?
Answer:- 4. 0 to 65535
char occupies 16-bits in the memory, so it ranges from 0 - 65535 ( 2 power 16)
7.Which of these coding types is used for data type characters in Java?
Answer:- 1. UNICODE
Unicode range is from 0 to 65536.
8.Which of the following is not OOPS concept in Java?
Answer:- 3. Compilation In java there are 4 main java concepts, like Inheritance, Encapsulation, Polymorphism and Abstraction.
No such word "Compilation" concepts is present in java.
9.Java is a Successor to which programming language?
Answer:- 3. C++
Before java, C++ introduce OOPs concept.
But java comes with more OOPs features that C++.
10.Who invented Java language?
Answer:- 2. James Gosling
James Gosling along with his team members Mike Sheridan and Patrick Naughton developed Java language.
The name of their team was green team.