CODEWITHSUNDEEP
javaarraysformatting
bankey
bankey

Reputation: 189

Java - Formatting multiple array output

I'm new to java. I am trying to figure out how to format multiple arrays that are being filled in while the program is running (thanks to user input).

When I print the arrays, they do not format. I would use " " spaces, but the output of the arrays are dependent on what the user inputs. What I have is:

System.out.println("Order Summary:");
        System.out.println();
        System.out.println("Type                   Size          Quantity    Price");
        System.out.println("---------------------------------------------------------");
        for (i = 0; i < boolCount; i++)
        {
            System.out.println(typeArray[i] + sizeArray[i] + quantityArray[i] + priceArray[i]); //How to format?
        }

which would print out whatever is in the arrays without spaces. typeArray, sizeArray, and priceArray are String arrays, while quantityArray is an integer array.

I probably need to do System.out.printf(Enter code here) but I'm not sure how to do that with arrays. Any help would be appreciated.

EDIT: This is what I get if I add "\t" between the arrays:

System.out.println(typeArray[i] + "\t\t" + sizeArray[i] + "\t" + quantityArray[i] + "\t" + priceArray[i]);

Order Summary:
Type                   Size          Quantity    Price
---------------------------------------------------------
BBQ Chicken     Large   2   $25.98
Chicken-Bacon Ranch     Personal    22  $175.78
Meat Lovers     Extra Large 33  $791.67

Order total: $993.43

---------------------------------------------------

EDIT: This is what I get with:

System.out.printf("%-23.23s %-14.14s %-12.12d %-5.5s", typeArray[i], sizeArray[i], quantityArray[i], priceArray[i]);

Order Summary:

Type                   Size          Quantity    Price
---------------------------------------------------------
Exception in thread "main" java.util.IllegalFormatPrecisionException: 12
    at java.util.Formatter$FormatSpecifier.checkInteger(Formatter.java:2984)
    at java.util.Formatter$FormatSpecifier.<init>(Formatter.java:2729)
    at java.util.Formatter.parse(Formatter.java:2560)
    at java.util.Formatter.format(Formatter.java:2501)
    at java.io.PrintStream.format(PrintStream.java:970)
    at java.io.PrintStream.printf(PrintStream.java:871)
    at pizzamenu.PizzaMenu.main(PizzaMenu.java:372)
Java Result: 1

Upvotes: 2

Views: 1078

Answers (1)

sparkhee93
sparkhee93

Reputation: 1375

You can use format specifiers.

Format specifiers follow the following format:

%[flags][width][.precision][argsize]typechar

So in your case, you would do the following:

System.out.printf("%-23s %-14s %-12d %-5s", typeArray[i], sizeArray[i], quantityArray[i], priceArray[i]);

More info on format specifiers: https://sharkysoft.com/archive/printf/docs/javadocs/lava/clib/stdio/doc-files/specification.htm

Upvotes: 1

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