how to format data tables

I am very new to java and need to create a data table that shows the growth statistics of a website for three different age groups over 5 years.

I have entered the data into three arrays, group13_24, group25_54, and group55plus, but I cannot figure out how to print the data table in the correct format, with column and row headers.

This is what I have so far for printing out the table:

String[] columnNames = { "13-24", "25-54", "55 +"};
int[][] numbers = { group13_24, group25_54, group55plus };


for (int i = 0; i < numbers.length; i++) {
for (int j = 0; j < numbers.length; j++) {
out.format("%10d", numbers[i][0])

I need my output to look like this:
13-24 25-54 55+
----- ----- -----
2005:
2006:
2007:
2008:
2009:

I have been working on this for a while now but cant seem to figure it out :confused:

How about a GUI JTable instead of command-line?

Is there a particular reason e.g. college homework why you need to print the table in command-line?

I say that because your data is already in the correct format to be added to a JTable

Yes its for a project im working on for a class,

ive gotten a little closer, but I still am having trouble

int[][] numbers = { group13_24, group25_54, group55plus };

out.format("%20s%15s%15s\n", "13-24", "25-54", "55+") ;
out.format("%20s%15s%15s\n", "-----", "-----", "-----");
out.println();
for (int i = 0; i < numbers.length; i++) {
out.format("%20s", numbers[i][0]);
for (int j = 0; j < numbers.length; j++) {
out.format("%15s", numbers[j][0]);

}