package java0905_api; import java.util.Random; public class Java138_Random { public static void main(String[] args) { Random ran = new Random(); double r1 = ran.nextDouble(); System.out.println(r1); int r2 = ran.nextInt(); System.out.println(r2); // 0부터 ~ 10미만 int r3 = ran.nextInt(10); System.out.println(r3); // 1부터 ~ 10까지 System.out.println(r3 + 1); } }