Output Format Java -


i have assignment q , have of done need output neater. need ask user choose num of rows between 3-10 , num of columns between 5-10.

  1. but output needs have number spaced evenly apart can't working!!?
  2. i need validate users input... how?

sample code:

scanner s = new scanner(system.in);  system.out.print("please enter number of rows between range of 3 10: ");  int count1 = s.nextint(); system.out.print("please enter number of columns between range of 5 10: "); int count2 = s.nextint();  (int = 1; <= count1; i++) {     (int j = 1; j <= count2; j++) {          system.out.print((i * j) + " ");     }     system.out.println(""); }  } }

i have attached image showing output , need. enter image description here

i rather leave comment, yay less 50 reputation. take @ following links, should provide insight:

a similar stackoverflow question

java output formatting strings

and java documentation

http://docs.oracle.com/javase/6/docs/api/java/util/formatter.html#syntax

hope you.

edit:

in answer second question, comment suggesting loop place start. similar following:

system.out.print("please enter number of rows between range of 3 10: "); int count1 = s.nextint();  while (count1 < 3 || count1 > 10) {     system.out.print("that not valid input. try again: ");     count1 = s.nextint(); }

and of course same count2. make separate function , pass count1 , count2 separately reduce duplicate code. loop condition here count1 < 3 || count1 > 10 continue prompt user input until within acceptable range.


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