java3

三元运算符：

public static void main(String[] args) {

    int p1 = 150;
    int p2 = 210;
    int p3 = 165;

    int max = p1 > p2 ? p1 : p2;

    int max2 = max > p3 ? max : p3;

    System.out.println(max2);
if判断语句：

Scanner sc = new Scanner(System.in);
System.out.println("请输入一个成绩");
int score = sc.nextInt();

if (score >= 0 && score <= 100) {
    if (score >= 95 && score <= 100) {
        System.out.println("优秀");
    } else if (score >= 90 && score <= 94) {
        System.out.println("一般");
    } else if (score >= 80 && score <= 89) {
        System.out.println("平庸");
    } else {
        System.out.println("菜鸟");
    }
} else {
    System.out.println("成绩异常");
}