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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 32
32 and 32
64 and 64

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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);} }

50
Compilation Error
None of these
10

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Data Types and Variables
Determine output:public class Test{int i = 34;public static void main(String args[]){Test t1 = new Test();Test t2 = new Test();t1.i = 65;System.out.print(t1.i);System.out.print(t2.i);}}

34 65
65 65
34 34
65 34

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

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

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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. byte b = 6;4. b+=8;5. System.out.println(b);6. b = b+7;7. System.out.println(b);8. }9. }

14 21
Compilation fails with an error at line 6
14 13
None of these
Compilation fails with an error at line 4

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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
Prints false
Prints true
Will not compile as boolean is not initialized

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