Is that homework? Previous question was fun, this one is a bit boring, so I will just give some advice...
There are several (well, at least two) ways to do this.
One way is to do two nested loops. One counting tens, the inner one counting from 0 to 9. A simple multiplication and addition will give the number for each iteration.
You need a String variable, init to empty string. You will concatenate a space after ending the inner loop, and print it before it. Using print to display on the same line, don't forget the space between the numbers. Use println at the end of the inner loop, to go to new line.