程序运行错误是什么原因???

以下这段代码在运行时提示出错是什么原因？请高手指点，是不是电脑没有装好JDK或path配置问题？

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D:\JAVA>javac JavaClassNotes.java
JavaClassNotes.java:205: 错误: 非法字符: '\uff1b'
                        System.out.print("请输入星期几：")；
                                                   ^
JavaClassNotes.java:211: 错误: 非法字符: '\uff1a'
                                        case"星期二"：
                                                 ^
2 个错误

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public class JavaClassNotes
{
    public static void main(String[] args){
        
            java.util.Scanner s=new java.util.Scanner(System.in);

            System.out.print("请输入星期几：")；
            String dayofWeek=s.next();
            switch(dayofWeek){
                    case"星期一":
                            System.out.println(1);
                            break;
                    case"星期二"：
                            System.out.println(2);
                            break;
                    default:
                            System.out.println("对不起，您输入的数据非法");
            
            }
   
    }
}