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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
Determine output:class A{ public static void main(String args[]){ int x; x = 10; if(x == 10){ int y = 20; System.out.print("x and y: "+ x + " " + y); y = x*2; } y = 100; System.out.print("x and y: " + x + " " + y); }}

10 20 10 100
Error
10 20 10 10
10 20 10 20

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

unsigned
signed
None of these
Both of the above

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Data Types and Variables
Determine output:public class Test { static void test(float x){ System.out.print("float"); } static void test(double x){ System.out.print("double"); } public static void main(String[] args){ test(99.9); }}

float
double
Exception is thrown at runtime
Compilation Error

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Data Types and Variables
What will the output of the following program?public class Test{ public static void main(String args[]){ float f = (1 / 4) * 10; int i = Math.round(f); System.out.println(i); }}

0
3
25
2
2.5

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Data Types and Variables
The following fraction of codedouble STATIC = 2.5 ;System.out.println( STATIC );

None of these
Prints 2.5
Raises an exception
Rraises an error as STATIC is used as a variable which is a keyword

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