当 integer output 超过“9”时，如何修复打印语句的格式？

Question

For the sake of not flooding my question with code, I coded a snippet that reproduces the same issue as the original code. As the title states, the print statement for my scoreboard gets messed up after one of the integers (specifically the aiScore ) goes over 9. How would I go about fixing this? Is there a better way which I should format my print statement? I've provided a photo before and after aiScore goes over 9.

public class Main
{
    public static void main(String[] args) {
      int playerScore = 0;
      int aiScore = 10;
      int ties = 0;
      int gamesPlayed = 0;
      System.out.println("\tPlayer Wins" + "\t   CPU Wins" + "\t     Ties" + "\t Games Played");
      System.out.println("\t     " + playerScore + "\t\t      " + aiScore + "\t\t       " + ties + "\t      " + gamesPlayed);
    }
}

Answer 1

Don't use all that concatenation, use formatted print .

System.out.printf("    %10s %10s %10s%n", "heading1", "heading2", "heading3");
System.out.printf("    %10d %10d %10d%n", num1, num2, num3);

In this example I happen to have 3 numeric values to print in columns, and I happen to believe 10 characters is wide enough.

Adjust according to your needs.

%s is a general string field. %d is a decimal integer. %n is a newline (this one does not take a value from the argument list).

Documentation for format string here .

Formatters show up in various places. There's "printf" as shown, the String.format method, and so on.