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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

the diagram of the digestive system
Assiatu Reply
How does twins formed
William Reply
They formed in two ways first when one sperm and one egg are splited by mitosis or two sperm and two eggs join together
Oluwatobi
what is genetics
Josephine Reply
Genetics is the study of heredity
Misack
how does twins formed?
Misack
What is manual
Hassan Reply
discuss biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles
Joseph Reply
what is biology
Yousuf Reply
the study of living organisms and their interactions with one another and their environments
AI-Robot
the study of living organisms and their interactions with one another and their environment.
Wine
discuss the biological phenomenon and provide pieces of evidence to show that it was responsible for the formation of eukaryotic organelles in an essay form
Joseph Reply
what is the blood cells
Shaker Reply
list any five characteristics of the blood cells
Shaker
lack electricity and its more savely than electronic microscope because its naturally by using of light
Abdullahi Reply
advantage of electronic microscope is easily and clearly while disadvantage is dangerous because its electronic. advantage of light microscope is savely and naturally by sun while disadvantage is not easily,means its not sharp and not clear
Abdullahi
cell theory state that every organisms composed of one or more cell,cell is the basic unit of life
Abdullahi
is like gone fail us
DENG
cells is the basic structure and functions of all living things
Ramadan
What is classification
ISCONT Reply
is organisms that are similar into groups called tara
Yamosa
in what situation (s) would be the use of a scanning electron microscope be ideal and why?
Kenna Reply
A scanning electron microscope (SEM) is ideal for situations requiring high-resolution imaging of surfaces. It is commonly used in materials science, biology, and geology to examine the topography and composition of samples at a nanoscale level. SEM is particularly useful for studying fine details,
Hilary
cell is the building block of life.
Condoleezza Reply
what is cell divisoin?
Aron Reply
Diversity of living thing
ISCONT
what is cell division
Aron Reply
Cell division is the process by which a single cell divides into two or more daughter cells. It is a fundamental process in all living organisms and is essential for growth, development, and reproduction. Cell division can occur through either mitosis or meiosis.
AI-Robot
What is life?
Allison Reply
life is defined as any system capable of performing functions such as eating, metabolizing,excreting,breathing,moving,Growing,reproducing,and responding to external stimuli.
Mohamed
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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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