Question

what are the answes

Which yields 2.5? (double)(10/4) (int)(10) / (int)(4) 10/4 (double)(10) / (double)(4)

Answer 1

Question 1 : option 4 is right answer

(double)(10)/(double)(4)

Explanations :

1 þublic class Main 2 - 3 public static void main(String[] args) { 4 System.out.println((double)(10/4)); 5 } 6 } 2.0 ... Program finished with exit code 0 Press ENTER to exit console.]

(double)(10/4) in this statement first perform the 10/4 which gives 2 then convert into double so Output is 2.0

So option 1 is wrong

1 2 public class Main 3- { 4 public static void main(String[] args) { 5 System.out.println((int)(10)/(int)(4)); 6 7 } } 8 2 .Program finished with exit code 0

(int)(10)/(int)(4) In this statement 10 and 4 convert into integers then perform division operation

10/4 = 2 So option 2 is wrong. we need output 2.5

1 þublic class Main 2-{ 3 public static void main(String[] args) { 4. System.out.println(10/4); 5 6} 7 ها 2 ... Program finished with exit code 0 Press ENTER to exit console.

10/4 = 2 So option 3 is wrong

1 public class Main 2 { 3 public static void main(String[] args) { 4 System.out.println((double)(10)/(double)(4)); 5 6 } 7 } 2.5 ... Program finished with exit code 0 Press ENTER to exit console. I

(double)(10)/(double)(4) first 10 and 4 convert to double then perform the division operation

10.0 / 4.0 = 2.5

So option 4 is Right Answer

===================================

Question 2 : Option 4 is right answer

4

1 public class Main 2-{ 3 public static void main(String[] args) { 4 System.out.println(13/3); 5 } 6 } 4 ... Program finished with exit code o Press ENTER to exit console.]

13/3 = 4

integer division 13/3 = 4

remaining options are wrong

=====================================

Question 3 : Option 2 is right answer

final int STEP_SIZE = 14;

final is used for constant variable. You can not change that value. If you try to change that variable value you will get error.

=============================

Question 4 : Option 2 is right answer

3numCars

An identifier CAN NOT start with a number. So Option 2, 3numCars is invalid

remaining options are valid

===============================

Question 5 : Option 2 right answer

D

D is NOT a programming Language

Java is a programming Language

C++ is a programming Language

C is a programming Language

==========================

Question 6 : Option 4 is right Answer

/* Get user input

// Get user input it is a single line comment it is valid

/* Get user

input */ is is multiline comment valid

/* Get user input */ it is also valid multiline comment

/* Get user input it is Invalid Comment

===========================

Question 7 : Option 4 is right answer

System.out.print(numDogs);

1 public class Main 2-{ 3 public static void main(String[] args) { 4 System.out.print("Amy // Michael") 5 6 } input } Compilation failed due to following error(s). Main.java:4: error: ';' expected System.out.print("Amy // Michael") 1 error

Semicolon ; is missing at end of print statement. So option 1 is wrong

1 public class Main 2 - { 3 public static void main(String[] args) { 4 int numDogs = 10; 5 system.print(numDogs); 6 ها input Compilation failed due to following error(s). Main.java:5: error: cannot find symbol System.print(numDogs); symbol: method print(int) location: class System 1 error

out is missing in print Statement So option 2 is wrong

1 public class Main 2 - 3 public static void main(String[] args) { 4 int numDogs = 10;| 5 System.out.print(NumDogs); 6 } input Compilation failed due to following error(s). Main.java:5: error: cannot find symbol System.out.print(NumDogs); symbol: variable NumDogs location: class Main 1 error

numDogs is declared, but NumDogs NOT declared. SO option 3 is wrong

1 public class Main 2. { 3 public static void main(String[] args) { 4 int numDogs = 10; 5 System.out.print(numDogs);|| 6 } 10 ... Program finished with exit code 0 Press ENTER to exit console.

No error in option 4 So option 4 is right answer.

Note : If you have any doubt please comment.

Please give a up vote

Thank you....