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Answer and Explanation

Question 5

What output is produced by the program shown in Listing 5 ?

Note that 6.283185307179586 is a correct numeric value.

  • A. Compiler Error
  • B. Runtime Error
  • C. 6.283185307179586
  • D. None of the above.
Listing 5 . Listing for Question 5.
public class Ap114{ public static void main(String args[]){System.out.println( new Worker().twoPI);}//end main() }//end class Ap114class Worker{ public static final double twoPI= 2 * Math.PI; }// end class Worker

Answer and Explanation

Question 6

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

Note that 6.283185307179586 is a correct numeric value.

  • A. Compiler Error
  • B. Runtime Error
  • C. 6.283185307179586
  • D. None of the above.
Listing 6 . Listing for Question 6.
public class Ap115{ public static void main(String args[]){System.out.println(Worker.twoPI); }//end main()}//end class Ap115 class Worker{public static final double twoPI = 2 * Math.PI;}// end class Worker

Answer and Explanation

Question 7

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

Note that 6.283185307179586 is a correct numeric value.

  • A. Compiler Error
  • B. Runtime Error
  • C. C. 6.283185307179586
  • D. None of the above.
Listing 7 . Listing for Question 7.
public class Ap116{ public static void main(String args[]){System.out.println(Worker.twoPI); }//end main()}//end class Ap116 class Worker{public static final double twoPI = 2 * myPI;public static final double myPI = Math.PI;}// end class Worker

Answer and Explanation

Question 8

What output is produced by the program shown in Listing 8 ?

  • A. Compiler Error
  • B. Runtime Error
  • C. 0 0.0 false
  • D. null null null
  • E. None of the above.
Listing 8 . Listing for Question 8.
public class Ap117{ public static void main(String args[]){new Worker().display(); }//end main()}//end class Ap117 class Worker{private int myInt; private double myDouble;private boolean myBoolean;public void display(){ System.out.print(myInt);System.out.print(" " + myDouble); System.out.println(" " + myBoolean); }//end display()}// end class Worker

Answer and Explanation

Question 9

What output is produced by the program shown in Listing 9 ?

  • A. Compiler Error
  • B. Runtime Error
  • C. 0 false 5 true
  • D. None of the above.
Listing 9 . Listing for Question 9.
public class Ap118{ public static void main(String args[]){new Worker().display(); new Worker(5,true).display();System.out.println(); }//end main()}//end class Ap118 class Worker{private int myInt; private boolean myBoolean;public Worker(int x, boolean y){ myInt = x;myBoolean = y; }//end parameterized constructorpublic void display(){System.out.print(myInt); System.out.print(" " + myBoolean + " "); }//end display()}// end class Worker

Answer and Explanation

Question 10

What output is produced by the program shown in Listing 10 ?

  • A. Compiler Error
  • B. Runtime Error
  • C. 20 222.0 false --- 5 222.0 true
  • D. None of the above.
Listing 10 . Listing for Question 10.
public class Ap119{ public static void main(String args[]){new Worker().display(); System.out.print("--- ");new Worker(5,true).display(); System.out.println();}//end main() }//end class Ap119class Worker{ private int myInt = 100;private double myDouble = 222.0; private boolean myBoolean;public Worker(){myInt = 20; }//end noarg constructorpublic Worker(int x, boolean y){myInt = x; myBoolean = y;}//end parameterized constructorpublic void display(){ System.out.print(myInt + " ");System.out.print(myDouble + " "); System.out.print(myBoolean + " ");}//end display()}// end class Worker

Questions & Answers

calculate molarity of NaOH solution when 25.0ml of NaOH titrated with 27.2ml of 0.2m H2SO4
Gasin Reply
what's Thermochemistry
rhoda Reply
the study of the heat energy which is associated with chemical reactions
Kaddija
How was CH4 and o2 was able to produce (Co2)and (H2o
Edafe Reply
explain please
Victory
First twenty elements with their valences
Martine Reply
what is chemistry
asue Reply
what is atom
asue
what is the best way to define periodic table for jamb
Damilola Reply
what is the change of matter from one state to another
Elijah Reply
what is isolation of organic compounds
IKyernum Reply
what is atomic radius
ThankGod Reply
Read Chapter 6, section 5
Dr
Read Chapter 6, section 5
Kareem
Atomic radius is the radius of the atom and is also called the orbital radius
Kareem
atomic radius is the distance between the nucleus of an atom and its valence shell
Amos
Read Chapter 6, section 5
paulino
Bohr's model of the theory atom
Ayom Reply
is there a question?
Dr
when a gas is compressed why it becomes hot?
ATOMIC
It has no oxygen then
Goldyei
read the chapter on thermochemistry...the sections on "PV" work and the First Law of Thermodynamics should help..
Dr
Which element react with water
Mukthar Reply
Mgo
Ibeh
an increase in the pressure of a gas results in the decrease of its
Valentina Reply
definition of the periodic table
Cosmos Reply
What is the lkenes
Da Reply
what were atoms composed of?
Moses Reply
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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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