Windows PowerShell
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PS C:\Users\rschubert> cd "c:\Users\rschubert\Documents\dev\" ; if ($?) { javac Polygon.java } ; if ($?) { java Polygon }
Welcome to the Polygonal Property Calculator

Enter your first name:                  Barry
Enter your last name:                   Wittman
Enter the sides the property has:       7
Enter the side length in meters:        10.4
Enter property cost per square meter:   $3.50
Enter fence cost per meter:             $6.75

Property Information for B. Wittman
****************************************************************
Total area:                             393.044 square meters
Total perimeter:                        72.800 meters
Length of apothem:                      10.798 meters
Interior angle:                         128.571 degrees
Cost of land:                           $1375.65
Cost of fencing:                        $491.40
Total cost:                             $1867.05

Loan Information
****************************************************************
Enter annual interest rate:             .05
Enter length of loan in years:          10
Total cost with interest:               $3041.23
PS C:\Users\rschubert\Documents\dev> cd "c:\Users\rschubert\Documents\dev\" ; if ($?) { javac Polygon.java } ; if ($?) { java Polygon }
Welcome to the Polygonal Property Calculator

Enter your first name:                  19993
Enter your last name:                   48ugb38rarq99999999999999999999999999999999999999999999999999999999
Enter the sides the property has:       g
Exception in thread "main" java.util.InputMismatchException
        at java.base/java.util.Scanner.throwFor(Scanner.java:939)
        at java.base/java.util.Scanner.next(Scanner.java:1594)
        at java.base/java.util.Scanner.nextInt(Scanner.java:2258)
        at java.base/java.util.Scanner.nextInt(Scanner.java:2212)
        at Polygon.main(Polygon.java:16)
PS C:\Users\rschubert\Documents\dev> cd "c:\Users\rschubert\Documents\dev\" ; if ($?) { javac Polygon.java } ; if ($?) { java Polygon }
Welcome to the Polygonal Property Calculator

Enter your first name:                  f
Enter your last name:                   g
Enter the sides the property has:       -2
Enter the side length in meters:        3333333.41323123123323
Enter property cost per square meter:   $-13
Enter fence cost per meter:             $11

Property Information for f. g
****************************************************************
Total area:                             0.000 square meters
Total perimeter:                        -6666666.826 meters
Length of apothem:                      -0.000 meters
Interior angle:                         360.000 degrees
Cost of land:                           $-0.00
Cost of fencing:                        $-73333335.09
Total cost:                             $-73333335.10

Loan Information
****************************************************************
Enter annual interest rate:             0
Enter length of loan in years:          0
Total cost with interest:               $-73333335.10
PS C:\Users\rschubert\Documents\dev> cd "c:\Users\rschubert\Documents\dev\" ; if ($?) { javac Polygon.java } ; if ($?) { java Polygon }
Welcome to the Polygonal Property Calculator

Enter your first name:                  0
Enter your last name:                   0
Enter the sides the property has:       0
Enter the side length in meters:
0
Enter property cost per square meter:   $0
Enter fence cost per meter:             $0

Property Information for 0. 0
****************************************************************
Total area:                             NaN square meters
Total perimeter:                        0.000 meters
Length of apothem:                      NaN meters
Interior angle:                         -Infinity degrees
Cost of land:                           $NaN
Cost of fencing:                        $0.00
Total cost:                             $NaN

Loan Information
****************************************************************
Enter annual interest rate:             0
Enter length of loan in years:          0
Total cost with interest:               $NaN
PS C:\Users\rschubert\Documents\dev> 0
0
PS C:\Users\rschubert\Documents\dev> 0
0
PS C:\Users\rschubert\Documents\dev> 0
0
PS C:\Users\rschubert\Documents\dev> cd "c:\Users\rschubert\Documents\dev\" ; if ($?) { javac Polygon.java } ; if ($?) { java Polygon }
Welcome to the Polygonal Property Calculator

Enter your first name:                  1/2
Enter your last name:                   1/2
Enter the sides the property has:       1/2
Exception in thread "main" java.util.InputMismatchException
        at java.base/java.util.Scanner.throwFor(Scanner.java:939)
        at java.base/java.util.Scanner.next(Scanner.java:1594)
        at java.base/java.util.Scanner.nextInt(Scanner.java:2258)
        at java.base/java.util.Scanner.nextInt(Scanner.java:2212)
        at Polygon.main(Polygon.java:16)
PS C:\Users\rschubert\Documents\dev>