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View Compilation Error

0_0_4397616_10348\Main.java:3: 类 LeftmostDigit 是公共的,应在名为 LeftmostDigit.java 的文件中声明
public class LeftmostDigit {
       ^
0_0_4397616_10348\Main.java:6: 找不到符号
符号: 类 Scanner
位置: 类 LeftmostDigit
		Scanner scanner = new Scanner(System.in);
		^
0_0_4397616_10348\Main.java:6: 找不到符号
符号: 类 Scanner
位置: 类 LeftmostDigit
		Scanner scanner = new Scanner(System.in);
		                      ^
3 错误


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