隨即生成1000個a~b的整數，求各數出現的概率

package Chapter_8;
import java.util.Random;
import java.util.Scanner;
public class RandomDome { 
 public static void main(String[] args) {
  // TODO Auto-generated method stub
  Scanner inScanner=new Scanner(System.in);
  System.out.println("請輸入生成隨機數的範圍a-b");
  int a=inScanner.nextInt();
  int b=inScanner.nextInt();
  int[]date=new int[b-a+1];
  Random random=new Random();
  for (int i = 0; i < 1000; i++) {
   date[random.nextInt(b-a+1)]++;
  }
  for (int j = 0; j <b-a+1; j++) {
   System.out.println(j+a+"出現百分比"+(double)date[j]/10+"%");
  }
}
}