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Data Types and Variables

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

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

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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
None of these
50
10

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

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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 false
Prints true

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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{ 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
11
5
4
None of these

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