12章 1.判断春夏秋冬

public class Demo {public void a(){System.out.println("该季节为春季");}public void b(){System.out.println("该季节为夏季");}public void c(){System.out.println("该季节为秋季");}public void d(){System.out.println("该季节为冬季");}}

import java.util.Scanner;public class Text {public static void main(String[] args) {Demo s = new Demo();Scanner input = new Scanner(System.in);System.out.print("请输入月份:\n");int yue = input.nextInt();if (yue >= 3 && yue <= 5) {s.a();} else if (yue >= 6 && yue <= 8) {s.b();} else if (yue >= 9 && yue <= 11) {s.c();} else if (yue > 0 && yue <= 2 || yue <= 12) {s.d();}}}