Question

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Posted on Sep 25, 2024

Que1. Given the following code, what is the result when run? Select the one correct answer. public class Program { public static void main(String args

Que1. Given the following code, what is the result when run? Select the one correct answer. public class Program { public static void main(String args [] ) { short eye = 1; short jay = 1; while (eye == 3 || jay < 5) { System.out.print(eye + + jay + ); eye++; jay += 2; } } }

A. 1 1 2 3 3 5
B. 1 1 2 2 3 3
C. No Output
D. An Exception is thrown
E. Compilation error

Que2. Given the following code, what is the result when run? Select the one correct answer. public class Program { public static void main(String args [] ) { short eye = 1; for ( ; ; ) {} } }

A. Program never ends - it is in an infinite loop
B. Compilation fails
C. An Exception occurs
D. Program terminates immediately
E. None of the above

Que3. Given the following code, what is the result when run? Select the one correct answer. public class Program { public static void main(String args [] ) { int k = 3; do { System.out.print ( k + ); } while ( k > 0); // this is the prefix decrement operator on variable k } }

A. 2 1 0
B. 1 2 3
C. 3 2 1
D. 0 1 2
E. 2 1 0 -1

Que4. Given the following code, what is the result when run? Select the one correct answer. public class Program { public static void main(String args [] ) { int x = 3, y = 5; String print = ; if (x < 5) if (y > 0) if (x < y) print += 1; else print += 2; else print += 3; else print += 4; System.out.print(print); } }

A. 1
B. 12
C. 13
D. 124
E. Compilation fails

Que5. Given the following code, what is the result when run? Select the one correct answer. public class Program { private static final int x = 10; public static void main (String [] args) { int x; System.out.print(x); } }

A. 10
B. 0
C. null
D. An Exception is thrown
E. Compilation fails

Que6.Given the following code, what is the result when run? Select the one correct answer. public class Program { public static void main(String args [] ) { short x = 2; x++; short y = 3 + x++; System.out.print(y); } }

A. 7
B. 6
C. 5
D. An Exception occurs
E. Compilation fails

Que7.What is the primary difference between the System.out.println and System.out.print methods? Select the one correct answer.

A. One prints to a printer, the other to the screen
B. One prints only full lines of text, the other prints partial lines of text
C. One includes the newline character as part the printed output, the other does not
D. One is for printing, the other is not for printing, it just has a similar sounding name
E. None of the above

Que8.What is the result of executing the following statement? Select the one correct answer. System.out.println(Hello + there + stranger);

A. Nothing, the statement will not compile successfully
B. The string "Hello"
C. The string "Hello there stranger"
D. The string "Hello there stranger" followed by a newline character

Que9.What should be done with the Scanner object used to collect command line inputs? Select the one correct answer.

A. It should be destroyed by calling destroy();
B. Nothing, it should be left alone
C. It should be closed by calling close();
D. It should be marked as invalid my calling invalidate();

Que10.What will be the value of result after this code executes? int num1 = 4, num2 = 6, num3 = 15; double num4 = 6.5, result = 0;

result = (num1 + num2 * num4) - num2 / num1 + num3 % num2;

A. 69
B. 66.5
C. 65.5
D. 45
E. 44.5

Que11.Given the following method

public static void updateNumber(int theNumber) { theNumber = theNumber + 6; System.out.println(theNumber); }

What is the output of the following code located in the same class?

int value = 7; System.out.println(value); updateNumber(value); System.out.println(value);

A.
7 13 13
B.
7 13 7
C.
7 7 7
D.
Runtime error because you can't change the value of theNumber in updateNumber.

Que12.Assume that you have an Account class with the following methods:

Account(String id, String ownerName, double balance) // standard constructor
void deposit(double amountToDeposit) // adds amountToDeposit to the balance
String toString() // returns account data in the form "id ownerName balance"

Given the following method

public static void addToAccount(Account theAcct) { theAcct.deposit(200.0); System.out.println(theAcct); }

What is the output of the following code located in the same class?

Account acct = new Account("9876","John Doe",500.0); System.out.println(acct); addToAccount(acct); System.out.println(acct);

A.
9876 John Doe $500.00 9876 John Doe $700.00 9876 John Doe $700.00
B.
9876 John Doe $500.00 9876 John Doe $500.00 9876 John Doe $500.00
C.
Runtime error because you can't change the value of theAcct in addToAccount.
D.
9876 John Doe $500.00 9876 John Doe $700.00 9876 John Doe $500.00

Que13.A programmer wants to continue a loop provided the user has typed y or Y. Which of these is correct? Assume the input is stored in a variable more of type char.

A.
while ( more == y || more == Y)
B.
while ( more == y && more == Y)
C.
while ( more == y && more == Y)
D.
while ( more == y || more == Y)

Que14.Which is the correct order that the class, package, and import statements should appear? Select the one correct answer.

A. class, import, package
B. package, class, import
C. import, class, package
D. package, import, class
E. import, package, class

Que15.Given the following code, what is the result when run? Select the one correct answer. public class Program { public static void main(String args [] ) { short x = 2; x++; short y = 3 + x++; System.out.print(y); } }