View Compilation Error

0_0_39820796_31783\Main.java:4: 错误: 需要class, interface或enum
        public static void main(String[] args) {
                      ^
0_0_39820796_31783\Main.java:6: 错误: 需要class, interface或enum
            while (scanner.hasNext()) {
            ^
0_0_39820796_31783\Main.java:9: 错误: 需要class, interface或enum
                double b = Math.pow(a,3);
                ^
0_0_39820796_31783\Main.java:10: 错误: 需要class, interface或enum
                double c = (4.0 / 3.0) * Math.PI * b;
                ^
0_0_39820796_31783\Main.java:11: 错误: 需要class, interface或enum
               System.out.printf("%.3f" , c);
               ^
0_0_39820796_31783\Main.java:14: 错误: 需要class, interface或enum
        }
        ^
6 个错误