<< Chapter < Page Chapter >> Page >

Answer and Explanation

Question 10

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

  • A. Compiler Error
  • B. Runtime Error
  • C. 1.0 2.0
  • D. D. None of the above
Listing 10 . Listing for Question 10.
public class Ap073{ public static void main(String args[]){new Worker().doArrays(); }//end main()}//end class definition class Worker{public void doArrays(){ double[]A = new double[2];A[0] = 1.0;A[1] = 2.0;Object B = A;System.out.println( ((double[])B)[0] + " " +((double[])B)[1]); }//end doArrays()}// end class

Answer and Explanation

Question 11

What output is produced by the program shown in Listing 11 ?

  • A. Compiler Error
  • B. Runtime Error
  • C. 1 2
  • D. None of the above
Listing 11 . Listing for Question 11.
public class Ap074{ public static void main(String args[]){new Worker().doArrays(); }//end main()}//end class definition class Worker{public void doArrays(){ int[]A = new int[2];A[0] = 1;A[1] = 2;double[]B = (double[])A;System.out.println(B[0] + " " + B[1]); }//end doArrays()}// end class

Answer and Explanation

Question 12

What output is produced by the program shown in Listing 12 ?

  • A. Compiler Error
  • B. Runtime Error
  • C. 1 2
  • D. None of the above
Listing 12 . Listing for Question 12.
public class Ap075{ public static void main(String args[]){new Worker().doArrays();}//end main() }//end class definitionclass Worker{ public void doArrays(){int[] B = returnArray();for(int i = 0; i<B.length;i++){ System.out.print(B[i]+ " "); }//end for loopSystem.out.println(); }//end doArrays()public int[]returnArray(){ int[]A = new int[2];A[0] = 1;A[1] = 2;return A; }//end returnArray()}// end class

Answer and Explanation

Question 13

What output is produced by the program shown in Listing 13 ?

A. Compiler Error B. Runtime Error C. 0 0 0 0 1 2 D. None of the above
Listing 13 . Listing for Question 13.
public class Ap076{ public static void main(String args[]){new Worker().doArrays(); }//end main()}//end class definition class Worker{public void doArrays(){ int[]A[];A = new int[2][3];for(int i=0; i<A.length;i++){ for(int j=0;j<A[0].length;j++){A[i][j]= i*j; }//end inner loop}//end outer loop for(int i=0; i<A.length;i++){ for(int j=0;j<A[0].length;j++){System.out.print( A[i][j] + " ");}//end inner loop System.out.println();}//end outer loop }//end doArrays()}// end class

Answer and Explanation

Question 14

What output is produced by the program shown in Listing 14 ?

  • A. Compiler Error
  • B. Runtime Error
  • C. 1 2
  • D. None of the above
Listing 14 . Listing for Question 14.
public class Ap077{ public static void main(String args[]){new Worker().doArrays(); }//end main()}//end class definition class Worker{public void doArrays(){ Subclass[]A = new Subclass[2];A[0] = new Subclass(1);A[1] = new Subclass(2);Object X = A;Superclass B = A; Subclass[]C = (Subclass[])B;Subclass[] Y = (Subclass[])X; System.out.println(C[0] + " " + Y[1]); }//end doArrays()}// end class class Superclass{private int data; public Superclass(int data){this.data = data; }//end constructorpublic int getData(){return data; }//end getData()public String toString(){return "" + data; }//end toString()}//end class SuperClass class Subclass extends Superclass{public Subclass(int data){ super(data);}//end constructor }//end class Subclass

Questions & Answers

what is mutation
Janga Reply
what is a cell
Sifune Reply
how is urine form
Sifune
what is antagonism?
mahase Reply
classification of plants, gymnosperm features.
Linsy Reply
what is the features of gymnosperm
Linsy
how many types of solid did we have
Samuel Reply
what is an ionic bond
Samuel
What is Atoms
Daprince Reply
what is fallopian tube
Merolyn
what is bladder
Merolyn
what's bulbourethral gland
Eduek Reply
urine is formed in the nephron of the renal medulla in the kidney. It starts from filtration, then selective reabsorption and finally secretion
onuoha Reply
State the evolution relation and relevance between endoplasmic reticulum and cytoskeleton as it relates to cell.
Jeremiah
what is heart
Konadu Reply
how is urine formed in human
Konadu
how is urine formed in human
Rahma
what is the diference between a cavity and a canal
Pelagie Reply
what is the causative agent of malaria
Diamond
malaria is caused by an insect called mosquito.
Naomi
Malaria is cause by female anopheles mosquito
Isaac
Malaria is caused by plasmodium Female anopheles mosquitoe is d carrier
Olalekan
a canal is more needed in a root but a cavity is a bad effect
Commander
what are pathogens
Don Reply
In biology, a pathogen (Greek: πάθος pathos "suffering", "passion" and -γενής -genēs "producer of") in the oldest and broadest sense, is anything that can produce disease. A pathogen may also be referred to as an infectious agent, or simply a germ. The term pathogen came into use in the 1880s.[1][2
Zainab
A virus
Commander
Definition of respiration
Muhsin Reply
respiration is the process in which we breath in oxygen and breath out carbon dioxide
Achor
how are lungs work
Commander
where does digestion begins
Achiri Reply
in the mouth
EZEKIEL
what are the functions of follicle stimulating harmones?
Rashima Reply
stimulates the follicle to release the mature ovum into the oviduct
Davonte
what are the functions of Endocrine and pituitary gland
Chinaza
endocrine secrete hormone and regulate body process
Achor
while pituitary gland is an example of endocrine system and it's found in the Brain
Achor
what's biology?
Egbodo Reply
Biology is the study of living organisms, divided into many specialized field that cover their morphology, physiology,anatomy, behaviour,origin and distribution.
Lisah
biology is the study of life.
Alfreda
Biology is the study of how living organisms live and survive in a specific environment
Sifune
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get Jobilize Job Search Mobile App in your pocket Now!

Get it on Google Play Download on the App Store Now




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
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Object-oriented programming (oop) with java' conversation and receive update notifications?

Ask