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Data Types and Variables

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

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

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

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

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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
Exception is thrown at runtime
Compilation Error
double

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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
10 20 10 10
Error
10 20 10 20

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Data Types and Variables
What will be output of the following program code?public class Test{public static void main(String[] a){short x = 10;x = x*5;System.out.print(x);} }

Compilation Error
10
None of these
50

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Data Types and Variables
Determine output:public class Test{ int a = 10; public void method(int a){ a += 1; System.out.println(++a); } public static void main(String args[]){ Test t = new Test(); t.method(3); }}

12
5
11
None of these
4

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