DATA TYPES AND VARIABLES QUIZ

What is the output for the below code?public class Test{ int _$; int $7; int do; public static void main(String argv[]){ Test test = new Test(); test.$7=7; test.do=9; System.out.println(test.$7); System.out.println(test.do); System.out.println(test._$); }}

None of these

Compile error - do is not valid identifier.

7 9 0

7 0 0

Compile error - $7 is not valid identifier.

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What is the output for the below code ?1. public class Test{2. public static void main(String[] args){3. int i = 010;4. int j = 07;5. System.out.println(i);6. System.out.println(j);7. }8. }

Compilation fails with an error at line 5

Compilation fails with an error at line 3

10 7

None of these

8 7

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What is the output for the below code ?class A{ int k; boolean istrue; static int p; public void printValue(){ System.out.print(k); System.out.print(istrue); System.out.print(p); }}public class Test{ public static void main(String argv[]){ A a = new A(); a.printValue(); }}

Compile error - static variable must be initialized before use.

0 false 0

0 true 0

0 0 0

None of these

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Size of float and double in Java is

32 and 32

64 and 64

32 and 64

64 and 32

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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

25

3

0

2.5

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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 4

None of these

Compilation fails with an error at line 6

14 13

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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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In Java, the word true is ................

Same as value 1

A Boolean literal

Same as value 0

A Java keyword

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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

34 34

65 34

65 65

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The following fraction of codedouble STATIC = 2.5 ;System.out.println( STATIC );

None of these

Raises an exception

Prints 2.5

Rraises an error as STATIC is used as a variable which is a keyword

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