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Data Types and Variables

Data Types and Variables
How many primitive data types are there in Java?

6
9
8
7

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Data Types and Variables
Which of the following automatic type conversion will be possible?

byte to int
int to long
long to int
short to int

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Data Types and Variables
What will be the output for the below code ?1. public class Test{2. int i=8;3. int j=9;4. public static void main(String[] args){5. add();6. }7. public static void add(){8. int k = i+j;9. System.out.println(k);10. }11. }

Compilation fails with an error at line 8
17
0
None of these
Compilation fails with an error at line 5

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Data Types and Variables
The following program:public class Test{ static boolean isOK; public static void main(String args[]){ System.out.print(isOK); } }

Will not compile as boolean can never be static
Will not compile as boolean is not initialized
Prints true
Prints false

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Data Types and Variables
What is the output for the below code ?1. public class Test{2. public static void main(String[] args){3. int i = 010;4. int j = 07;5. System.out.println(i);6. System.out.println(j);7. }8. }

8 7
Compilation fails with an error at line 3
10 7
Compilation fails with an error at line 5
None of these

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Data Types and Variables
In Java byte, short, int and long all of these are

signed
None of these
Both of the above
unsigned

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