标签:表达式 switch code stat jdk java ring 表达 amp
import java.util.Scanner;
public class IfDemo03 {
public static void main(String[] args) {
//考试分数大于60就是及格,小于60分就不及格
Scanner scanner = new Scanner(System.in);
System.out.println("请输入成绩:");
int score = scanner.nextInt();
if (score==100){
System.out.println("恭喜满分");
}else if (score<100 && score>=90){
System.out.println("A级");
}else if (score<90 && score>=80){
System.out.println("B级");
}else if (score<80 && score>=70){
System.out.println("C级");
}else if (score<70 && score>=60){
System.out.println("D级");
}else if (score<60 && score>=0){
System.out.println("不及格");
}else {
System.out.println("成绩不合法");
}
scanner.close();
}
}
public class SwitchDemo01 {
public static void main(String[] args) {
//case穿透 //switch 匹配一个具体的值
char grade = ‘A‘;
switch (grade){
case ‘A‘:
System.out.println("优秀");
break; //可选
case ‘B‘:
System.out.println("良好");
break; //可选
case ‘C‘:
System.out.println("及格");
break; //可选
case ‘D‘:
System.out.println("再接再厉");
break; //可选
case ‘E‘:
System.out.println("挂科");
break; //可选
default:
System.out.println("未知等级");
}
}
}
public class SwitchDemo02 {
public static void main(String[] args) {
String name = "啊卢";
//JDK7的新特性,表达式结果可以是字符串!!!
//字符的本质还是数字
//反编译 java---class(字节码文件)---反编译(IDEA)
switch (name){
case "小卢":
System.out.println("小卢");
break;
case "啊卢":
System.out.println("啊卢");
break;
default:
System.out.println("弄啥嘞!");
}
}
}
标签:表达式 switch code stat jdk java ring 表达 amp
原文地址:https://www.cnblogs.com/helloxiaolu/p/13255047.html