java - System.out.print (""); token "."上的语法错误，@ 应在此 token 之后

Question

我在这段代码上遇到了这个错误，我无法弄清楚哪里出了问题。

public class enc {
    //The Look-Up Table with the position of all the available characters
    public static final String LUT="*, .abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
    Scanner sc=new Scanner(System.in);
    System.out.print("Input the sentence you want to encode.");
    String s= sc.nextLine();        
}

Answer 1

您需要将代码放在一个方法中:

public class enc {
    //The Look-Up Table with the position of all the available characters
    public static final String LUT="*, .abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";

    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);
        System.out.print("Input the sentence you want to encode.");
        String s= sc.nextLine();
    }
}