Assignment 10 Ch 15 number 5

5.

fileIn = new Scanner( new FileReader(stdIn.nextLine()));

while(filein.hastNext()

{

numwords++;

}

Assignment 10.Problem 4

Part A.

import java.util.Scanner;

public class JavaAp5 {

/**

* @param args the command line arguments

*/

public static void main(String[] args) {

Scanner stdIn= new Scanner(System.in);

double n;

int d;

System.out.print("Enter Numerator:");

n=stdIn.nextDouble();

System.out.print("Enter divsor:");

d=stdIn.nextInt();

if (d==0)

{

System.out.print("please enter a value that is not zero");

d=stdIn.nextInt();

}

System.out.println(n/d);

Part B.

public static void main(String[] args) {

Scanner stdIn= new Scanner(System.in);

double n;

int d;

System.out.print("Enter Numerator:");

n=stdIn.nextDouble();

System.out.print("Enter divsor:");

d=stdIn.nextInt();

while(n!=0 && d!=0)

{

try

{

System.out.print("Please enter a numerator");

n=stdIn.nextDouble();

System.out.print("Please enter a denominator");

d=stdIn.nextInt();

}

catch (NumberFormatException e)

{

System.out.print("That was not a correct number");

}

}

System.out.println(n/d);

}

Chapter 13: Assignment 9

3.

Sparky= bark, bark lassie=animal

Sparky is generating a bark bark because you extended out the Animal class to Dog. and it returns a string of bark bark.

lassie is generating animal because thats what her class is calling.

8.

New Dog Lassie= animals[0]

New Cat fluffy= animals[1]

Assignment 9 Chapter 12

#8.

A. The problem will be that this method will not inherit the correct variables when another method calls it.

B. You should fix the problem by overriding that method with a .super extension.

#12.

1. Composition.

2.Composition.

3.inheritance

4. composition

5.composition.

6. inheritance

7.composition.

8.inheritance.

Chapter 11 #11-12

11. int w, x, y =z;

12. The expression Evaluates out to 'M'.

Assignment 8 #1,

Problem 6:

System.arraycopy(allSalaries,1,workerSalaries,0,7);

Problem 7:

a. It prints homer,Flanders,apu

b. change the method type to String [] and add return list;

P367 Number10

It is not legal to omit the pennyjar prefixes in the program.

Page 366 Problem 6.

line 21: x=3; Is incorrect because a non static variable cannot be referenced in a static method.

line 26: doIt(); Is incorrect because a non static method cannot be referenced inside of a static method.

Line 30: test.doIt(); Is incorrect because of the same reason as line 26.

Problem 7

Scanner stdIN = new Scanner(System.in);

String songs =

" 1. Bob Wow - Fresh Azimiz\n"+

"2. Weezer - Beverly Hills\n"+

"3. Dave Matthews Band - Crash Into me\n"+

"4. Sheryl Crow - Leaving Las Vegas\n";

String songNum;

int songIndex;

int eolIndex;

String song;

System.out.print("Enter song number: ");

songNum = stdIN.nextLine();

eolIndex=songNum.indexOf(songNum);

song=songNum.substring(eolIndex);

System.out.println(song);

Problem 6

public static void main(String[] args) {

// TODO code application logic here

Scanner stdIN= new Scanner(System.in);

String songs=

"1. Green Day- American Idiot\n"+

"2. Jesus Jones- Right Here\n"+

"3. Indigo Girls- Closer to Fine\n"+

"4. Peter Tosh - Equal Rights\n";

String searchText;

int foundIndex;

int count=0;

System.out.print("Enter Search text; ");

searchText=stdIN.nextLine();

if(songs.contains(searchText))

{

count++;

}

else

{

System.exit(0);

}

System.out.println("Number of ourrances of \"" +

searchText + "\" :"+count);

}

}

Problem # 5

for (i=2;i

{

product=num*i;

}

Problem # 3

/*

* To change this template, choose Tools | Templates

* and open the template in the editor.

*/

package p145number3;

/**

*

* @author chris.belsky

*/

public class P145number3 {

/**

* @param args the command line arguments

*/

public static void main(String[] args) {

// TODO code application logic here

int count=0;

int sum=0;

int product=1;

do

{

count++;

product*=count;

sum+=count;

if(count == 5)

System.out.println("sum = " +sum);

System.out.println("Product = " + product);

}while(count<5) ;

}Publish Post

}