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Data Types and Variables

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); }}

Compilation Error
float
double
Exception is thrown at runtime

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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); }}

2
3
2.5
25
0

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Data Types and Variables
What is the output of the following program?public class Test{static int x = 10 ; public static void main(String[] a){ Test test = new Test( ) ; Test test1 = new Test( ) ; test.x += 1 ; System.out.println( test.x + test1.x ) ; }}

22
Throws Exception
20
21
Compilation Error

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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 10
10 20 10 100
Error
10 20 10 20

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Data Types and Variables
Size of float and double in Java is

32 and 64
64 and 32
32 and 32
64 and 64

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