View Compilation Error

0_0_37238247_22807\Main.java:3: 错误: 需要class, interface或enum
public static void main(String[] args) {
              ^
0_0_37238247_22807\Main.java:5: 错误: 需要class, interface或enum
        while (scanner.hasNext()) {
        ^
0_0_37238247_22807\Main.java:7: 错误: 需要class, interface或enum
            String b = scanner.next();
            ^
0_0_37238247_22807\Main.java:8: 错误: 需要class, interface或enum
            int k = scanner.nextInt();
            ^
0_0_37238247_22807\Main.java:9: 错误: 需要class, interface或enum
            if ("0".equals(a) && "0".equals(b)) {
            ^
0_0_37238247_22807\Main.java:11: 错误: 需要class, interface或enum
            }
            ^
0_0_37238247_22807\Main.java:14: 错误: 需要class, interface或enum
            } else {
            ^
0_0_37238247_22807\Main.java:16: 错误: 需要class, interface或enum
            }
            ^
8 个错误