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Answer and Explanation

Question 6

What output is produced by the program shown in Listing 6 ?

  • A. Compiler Error
  • B. Runtime Error
  • C. 4 -3
  • D. 3 -4
  • E. None of the above
Listing 6 . Listing for Question 6.
public class Ap044{ public static void main(String args[]){new Worker().doCast(); }//end main()}//end class definition class Worker{public void doCast(){ double w = 3.5;double x = -3.499999999999; System.out.println(doIt(w) +" " + doIt(x));}//end doCast()private int doIt(double arg){ if(arg>0){ return (int)(arg + 0.5);}else{ return (int)(arg - 0.5);}//end else }//end doIt()}//end class definition

Answer and Explanation

Question 7

What output is produced by the program shown in Listing 7 ?

  • A. Compiler Error
  • B. Runtime Error
  • C. 3.5/9/true
  • D. None of the above
Listing 7 . Listing for Question 7.
public class Ap045{ public static void main(String args[]){new Worker().doConcat(); }//end main()}//end class definition class Worker{public void doConcat(){ double w = 3.5;int x = 9; boolean y = true;String z = w + "/" + x + "/" + y; System.out.println(z);}//end doConcat() }// end class

Answer and Explanation

Question 8

Which of the following best approximates the output from the program shown in Listing 8 ?

  • A. Compiler Error
  • B. Runtime Error
  • C. Dummy@273d3c
  • D. Joe 35 162.5
Listing 8 . Listing for Question 8.
public class Ap046{ public static void main(String args[]){new Worker().doConcat(); }//end main()}//end class definition class Worker{public void doConcat(){ Dummy y = new Dummy();System.out.println(y); }//end doConcat()}// end class class Dummy{private String name = "Joe"; private int age = 35;private double weight = 162.5; }//end class dummy

Answer and Explanation

Question 9

Which of the following best approximates the output from the program shown in Listing 9 ?

  • A. Compiler Error
  • B. Runtime Error
  • C. C. Dummy@273d3c
  • D. Joe Age = 35 Weight = 162.5
Listing 9 . Listing for Question 9.
public class Ap047{ public static void main(String args[]){new Worker().doConcat(); }//end main()}//end class definition class Worker{public void doConcat(){ Dummy y = new Dummy();System.out.println(y); }//end doConcat()}// end class class Dummy{private String name = "Joe"; private int age = 35;private double weight = 162.5;public String toString(){ String x = name + " " +" Age = " + age + " " + " Weight = " + weight;return x; }}//end class dummy

Answer and Explanation

Question 10

Which of the following best approximates the output from the program shown in Listing 10 ? (Note the use of the constructor for the Date class that takes no parameters.)

  • A. Compiler Error
  • B. Runtime Error
  • C. Sun Dec 02 17:35:00 CST 2012 1354491300781
  • D. Thur Jan 01 00:00:00 GMT 1970
  • 0
  • None of the above
Listing 10 . Listing for Question 10.
import java.util.*; public class Ap048{public static void main( String args[]){ new Worker().doConcat();}//end main() }//end class definitionclass Worker{ public void doConcat(){Date w = new Date(); String y = w.toString();System.out.print(y); System.out.println(" " + w.getTime());}//end doConcat() }// end class

Questions & Answers

how did you get 1640
Noor Reply
If auger is pair are the roots of equation x2+5x-3=0
Peter Reply
Wayne and Dennis like to ride the bike path from Riverside Park to the beach. Dennis’s speed is seven miles per hour faster than Wayne’s speed, so it takes Wayne 2 hours to ride to the beach while it takes Dennis 1.5 hours for the ride. Find the speed of both bikers.
MATTHEW Reply
420
Sharon
from theory: distance [miles] = speed [mph] × time [hours] info #1 speed_Dennis × 1.5 = speed_Wayne × 2 => speed_Wayne = 0.75 × speed_Dennis (i) info #2 speed_Dennis = speed_Wayne + 7 [mph] (ii) use (i) in (ii) => [...] speed_Dennis = 28 mph speed_Wayne = 21 mph
George
Let W be Wayne's speed in miles per hour and D be Dennis's speed in miles per hour. We know that W + 7 = D and W * 2 = D * 1.5. Substituting the first equation into the second: W * 2 = (W + 7) * 1.5 W * 2 = W * 1.5 + 7 * 1.5 0.5 * W = 7 * 1.5 W = 7 * 3 or 21 W is 21 D = W + 7 D = 21 + 7 D = 28
Salma
Devon is 32 32​​ years older than his son, Milan. The sum of both their ages is 54 54​. Using the variables d d​ and m m​ to represent the ages of Devon and Milan, respectively, write a system of equations to describe this situation. Enter the equations below, separated by a comma.
Aaron Reply
find product (-6m+6) ( 3m²+4m-3)
SIMRAN Reply
-42m²+60m-18
Salma
what is the solution
bill
how did you arrive at this answer?
bill
-24m+3+3mÁ^2
Susan
i really want to learn
Amira
I only got 42 the rest i don't know how to solve it. Please i need help from anyone to help me improve my solving mathematics please
Amira
Hw did u arrive to this answer.
Aphelele
hi
Bajemah
-6m(3mA²+4m-3)+6(3mA²+4m-3) =-18m²A²-24m²+18m+18mA²+24m-18 Rearrange like items -18m²A²-24m²+42m+18A²-18
Salma
complete the table of valuesfor each given equatio then graph. 1.x+2y=3
Jovelyn Reply
x=3-2y
Salma
y=x+3/2
Salma
Hi
Enock
given that (7x-5):(2+4x)=8:7find the value of x
Nandala
3x-12y=18
Kelvin
please why isn't that the 0is in ten thousand place
Grace Reply
please why is it that the 0is in the place of ten thousand
Grace
Send the example to me here and let me see
Stephen
A meditation garden is in the shape of a right triangle, with one leg 7 feet. The length of the hypotenuse is one more than the length of one of the other legs. Find the lengths of the hypotenuse and the other leg
Marry Reply
how far
Abubakar
cool u
Enock
state in which quadrant or on which axis each of the following angles given measure. in standard position would lie 89°
Abegail Reply
hello
BenJay
hi
Method
I am eliacin, I need your help in maths
Rood
how can I help
Sir
hmm can we speak here?
Amoon
however, may I ask you some questions about Algarba?
Amoon
hi
Enock
what the last part of the problem mean?
Roger
The Jones family took a 15 mile canoe ride down the Indian River in three hours. After lunch, the return trip back up the river took five hours. Find the rate, in mph, of the canoe in still water and the rate of the current.
cameron Reply
Shakir works at a computer store. His weekly pay will be either a fixed amount, $925, or $500 plus 12% of his total sales. How much should his total sales be for his variable pay option to exceed the fixed amount of $925.
mahnoor Reply
I'm guessing, but it's somewhere around $4335.00 I think
Lewis
12% of sales will need to exceed 925 - 500, or 425 to exceed fixed amount option. What amount of sales does that equal? 425 ÷ (12÷100) = 3541.67. So the answer is sales greater than 3541.67. Check: Sales = 3542 Commission 12%=425.04 Pay = 500 + 425.04 = 925.04. 925.04 > 925.00
Munster
difference between rational and irrational numbers
Arundhati Reply
When traveling to Great Britain, Bethany exchanged $602 US dollars into £515 British pounds. How many pounds did she receive for each US dollar?
Jakoiya Reply
how to reduced echelon form
Solomon Reply
Jazmine trained for 3 hours on Saturday. She ran 8 miles and then biked 24 miles. Her biking speed is 4 mph faster than her running speed. What is her running speed?
Zack Reply
d=r×t the equation would be 8/r+24/r+4=3 worked out
Sheirtina
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Source:  OpenStax, Object-oriented programming (oop) with java. OpenStax CNX. Jun 29, 2016 Download for free at https://legacy.cnx.org/content/col11441/1.201
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