import java.util.*; //引入Random類別 public class Exercise_3_7 { public static void main(String[] args) { Random ran = new Random(); //Random類別,需要import java.util.*; int dice; for(int n=1;n<=100;n++) { dice = ran.nextInt(2); if(dice == 1) { println("正面"); } else { println("反面"); } } } public static void print(String str) { System.out.print(str); } public static void println(String str) { System.out.println(str); } }