How do make it so my println outlines/tabs the way I want in this for loop with multiple lines to print?

Question

So, I've been frollicking around with this for a while and encountered things like using Format and /t and what not. But I still cant figure out how to properly outline the output of my println made by this for loop:

for (int i = 0; i < AANTAL_CIJFERS; i++) //Toon cijfers per vak
    {
        System.out.println("Vak/project:\t" + vakken[i] + "\tCijfer\t: " + cijfers[i] + "\tBehaalde punten: " + puntBehaald(i));
    }

It currently prints like this:

But i'd like the printline to look more like this:

But I just cant figure it out, anybody know how I could accomplish this?

Answer 1

On this case you have to use java System.out.printf() or String.format() methods instead of System.out.print() or System.out.println()

Please read this exmples how-to-use-formatting-with-printf-correctly-in-java and tabs-does-not-result-in-aligned-columns for more details.

Also here is a helpful article java-string-format-examples

I just update the code to be as the following and it works fine with me :

 private static String format = "%s %-30s  ";
private static String format2 = "%s %3s  ";
 . 
 .

    for (int i = 0; i < AANTAL_CIJFERS; i++) //Toon cijfers per vak
    {
        System.out.printf(format, "Vak/project: ", vakken[i]);
        System.out.printf(format2, "Cijfer: ", cijfers[i]);
        System.out.printf(format2, "Behaalde punten: ", puntBehaald(i));
         System.out.printf("%n");
    }

Answer 2

So I am now using this as code:

 for (int i = 0; i < AANTAL_CIJFERS; i++) //Toon cijfers per vak
    {
        System.out.printf(format, "Vak/project: ", vakken[i]);
        System.out.printf(format, "Cijfer: ", cijfers[i]);
        System.out.printf(format, "Behaalde punten: ", puntBehaald(i));
        System.out.printf("\n");
    }

Which gives this:

So it clearly doesnt work the way I'd expect it to from the documentation. What am I doing wrong? It should be: Vak/project: "output from vakken[i]" TAB Cijfer: "output from cijfers[i]" TAB Behaalde punten: "output from puntBehaald(i)".

This is my format right now: private static String format = "%-20s%s";