package week_3;
import java.util.Scanner;
import java.util.*;
//import java.lang.*;
//import java.io.*;
/**
Write a program that can help decide if a particular programming project
is best solved using a Waterfall or Agile methodology.
Your program should ask the user:
• How many programmers will be on the team [ More than 30 programmers -> Waterfall ]
• If there needs to be firm deadlines and a fixed schedule [ Yes - > Waterfall ]
• If the programmers have experience in requirements, analysis and testing as well as coding [ Yes - > Agile ]
• If there are stringent quality control requirements [ Yes -> Waterfall ]
• If early integration is desirable [ Yes -> Agile ]
• If the customer will be requiring working models early in the process [ Yes -> Agile ]
There's a `yesNoInput` method in the InputUtils library that returns boolean values from yes/no user input.
(If the user types 'n' or 'no', the method returns false. If the user types 'y' or 'yes' the method returns true.)
Write a method called agileOrWaterfall,
which takes this data as integer and boolean arguments.
**The arguments should be provided in the order given above**.
`agileOrWaterfall` will return a String, a suggestion on whether Agile, or Waterfall, or either, may be is best.
To decide, check how many factors are in favor of Agile. If there are 4 or more factors in favor of Agile, then return `AGILE`.
If there are 4 or more factors in favor of Waterfall, return `WATERFALL`.
If there are an equal number of factors in favor of Agile and Waterfall, returns `EITHER`.
Notice that there are three global constants AGILE, WATERFALL and EITHER.
Your agileOrWaterfall method should return one of these Strings.
Use your agileOrWaterfall method in your program to suggest which methodology to use.
Your main method should do the task of asking questions and printing the result.
Your agileOrWaterfall method should be given the relevant data, and do the processing,
deciding, and returning the result.
*/
public class Question_3_Agile_Or_Waterfall {
public final String AGILE = "Agile";
public final String WATERFALL = "Waterfall";
public final String EITHER = "Either";
// don't modify this part
public static void main(String[] args) {
new Question_3_Agile_Or_Waterfall().methodology();
}
public void methodology() {
// TODO Ask user the 6 questions
String ch[] = new String[6];
Scanner sc = new Scanner(System.in);
System.out.println("How many program will be on the team:");
int n = sc.nextInt();
if (n > 30)
ch[0] = "Wanterfall";
else
ch[0] = "Agile";
System.out.println("When there is need to be firm deadlines and a fixed schedule:");
if (sc.next().charAt(0) == 'y')
ch[1] = "Waterfall";
else
ch[1] = "Agile";
System.out.println("If the programmers have experience in requirements, analysis and testing as well as codig:");
if (sc.next().charAt(0) == 'y')
ch[2] = "Agile";
else
ch[2] = "Waterfall";
System.out.println("if there are stringent quality control requirements:");
if (sc.next().charAt(0) == 'y' || sc.next().charAt(0) == 'Y')
ch[3] = "Waterfall";
else
ch[3] = "Agile";
System.out.println("If early integration is desirable:");
if (sc.next().charAt(0) == 'y' || sc.next().charAt(0) == 'Y')
ch[4] = "Agile";
else
ch[4] = "Waterfall";
System.out.println("If the customers will be requiring working models early in the process:");
if (sc.next().charAt(0) == 'y' || sc.next().charAt(0) == 'Y')
ch[5] = "Agile";
else
ch[5] = "Waterfall";
// TODO Call the agileOrWaterfall method
String suggestion = agileOrWaterfall(ch);
// TODO Use the suggestion agileOrWaterfall returns to print a message for the user.
System.out.println("Programing project is best solved using" + suggestion + "methodology");
}
// TODO write a public agileOrWaterfall method. It should have this name, and take
public String agileOrWaterfall(String ch[]) {
// the 6 arguments needed, in the same order given in the description.
// TODO this function should a String - one of the three Strings AGILE, WATERFALL or EITHER.
// For example, if your method determines that Agile is best, write a statement like
// return AGILE; // return the value in the AGILE constant
int a = 0, w = 0, e = 0;
for (int i = 0; i < 6; i++) {
if (ch[i] == AGILE)
a++;
if (ch[i] == WATERFALL)
w++;
if (ch[i] == EITHER)
e++;
}
System.out.println(Arrays.toString(ch));
if (a > 3)
return AGILE;
if (w > 3)
return WATERFALL;
else
return EITHER;
}
}
There was some errors in your methodology() method, especially the part of boolean checks. For checking if user entered y or Y, you were calling sc.next() twice, which asks user to enter two values instead of once. So I have corrected it, using a helper method to check if user entered value contains ‘yes’ or ‘y’ in any case. Now the code is working fine. Let me know if you have any doubts or if you need anything to change. If you are satisfied with the solution, please rate the answer. Thanks
// Question_3_Agile_Or_Waterfall.java
package week_3;
import java.util.Scanner;
import java.util.*;
//import java.lang.*;
//import java.io.*;
/**
* Write a program that can help decide if a particular programming project is
* best solved using a Waterfall or Agile methodology.
*
* Your program should ask the user:
*
* • How many programmers will be on the team [ More than 30 programmers ->
* Waterfall ] • If there needs to be firm deadlines and a fixed schedule [ Yes
* - > Waterfall ] • If the programmers have experience in requirements,
* analysis and testing as well as coding [ Yes - > Agile ] • If there are
* stringent quality control requirements [ Yes -> Waterfall ] • If early
* integration is desirable [ Yes -> Agile ] • If the customer will be requiring
* working models early in the process [ Yes -> Agile ]
*
* There's a `yesNoInput` method in the InputUtils library that returns boolean
* values from yes/no user input. (If the user types 'n' or 'no', the method
* returns false. If the user types 'y' or 'yes' the method returns true.)
*
* Write a method called agileOrWaterfall, which takes this data as integer and
* boolean arguments. The arguments should be provided in the order given
* above**. `agileOrWaterfall` will return a String, a suggestion on whether
* Agile, or Waterfall, or either, may be is best.
*
* To decide, check how many factors are in favor of Agile. If there are 4 or
* more factors in favor of Agile, then return `AGILE`. If there are 4 or more
* factors in favor of Waterfall, return `WATERFALL`. If there are an equal
* number of factors in favor of Agile and Waterfall, returns `EITHER`.
*
* Notice that there are three global constants AGILE, WATERFALL and EITHER.
* Your agileOrWaterfall method should return one of these Strings.
*
* Use your agileOrWaterfall method in your program to suggest which methodology
* to use.
*
* Your main method should do the task of asking questions and printing the
* result. Your agileOrWaterfall method should be given the relevant data, and
* do the processing, deciding, and returning the result.
*/
public class Question_3_Agile_Or_Waterfall {
public final String AGILE = "Agile";
public final String WATERFALL = "Waterfall";
public final String EITHER = "Either";
// don't modify this part
public static void main(String[] args) {
new Question_3_Agile_Or_Waterfall().methodology();
}
public void methodology() {
// TODO Ask user the 6 questions
Scanner sc = new Scanner(System.in);
System.out.println("How many programmers will be on the team:");
//reading integer answer
int q1 = sc.nextInt();
//for all other answers, storing the result in boolean variables
System.out
.println("If there needs to be firm deadlines and a fixed schedule:");
boolean q2=isYes(sc.next());
System.out
.println("If the programmers have experience in requirements, analysis and testing as well as codig:");
boolean q3=isYes(sc.next());
System.out
.println("if there are stringent quality control requirements:");
boolean q4=isYes(sc.next());
System.out.println("If early integration is desirable:");
boolean q5=isYes(sc.next());
System.out
.println("If the customers will be requiring working models early in the process:");
boolean q6=isYes(sc.next());
// TODO Call the agileOrWaterfall method
String suggestion = agileOrWaterfall(q1,q2,q3,q4,q5,q6);
// TODO Use the suggestion agileOrWaterfall returns to print a message
// for the user.
System.out.println("Programing project is best solved using "
+ suggestion + " methodology");
}
// TODO write a public agileOrWaterfall method. It should have this name,
// and take
public String agileOrWaterfall(int q1, boolean q2, boolean q3, boolean q4,
boolean q5, boolean q6) {
// the 6 arguments needed, in the same order given in the description.
// TODO this function should a String - one of the three Strings AGILE,
// WATERFALL or EITHER.
// For example, if your method determines that Agile is best, write a
// statement like
// return AGILE; // return the value in the AGILE constant
int a = 0, w = 0;
if (q1 > 30) {
//waterfall
w++;
} else {
//agile
a++;
}
//all other variables are boolean, true means yes, false means no
if (q2) {
w++;
} else {
a++;
}
if (q3) {
a++;
} else {
w++;
}
if (q4) {
w++;
} else {
a++;
}
if (q5) {
a++;
} else {
w++;
}
if (q6) {
a++;
} else {
w++;
}
if (a > 3)
return AGILE;
if (w > 3)
return WATERFALL;
else
return EITHER;
}
/**
* helper method defined to check if a string contains yes or YES or y or Y
* or yES or any combination of yes
*
* @param txt
* text to be checked
* @return true if txt contains yes or y (not case sensitive), else false
*/
private boolean isYes(String txt) {
if (txt.equalsIgnoreCase("yes") || txt.equalsIgnoreCase("y")) {
return true;
}
return false;
}
}
/*OUTPUT*/
How many programmers will be on the team:
25
If there needs to be firm deadlines and a fixed schedule:
yes
If the programmers have experience in requirements, analysis and testing as well as codig:
y
if there are stringent quality control requirements:
yes
If early integration is desirable:
n
If the customers will be requiring working models early in the process:
No
[Agile, Waterfall, Agile, Waterfall, Waterfall, Waterfall]
Programing project is best solved using Waterfall methodology
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