View Compilation Error

0_0_38411396_5593\Main.java:1: 错误: 需要class, interface或enum
  public static void main(String[] args) {
                ^
0_0_38411396_5593\Main.java:3: 错误: 需要class, interface或enum
        while (sc.hasNext()){
        ^
0_0_38411396_5593\Main.java:5: 错误: 需要class, interface或enum
            double x2=4*3.1415927*x1*x1*x1/3;
            ^
0_0_38411396_5593\Main.java:6: 错误: 需要class, interface或enum
            System.out.println(String.format("%.3f",x2));
            ^
0_0_38411396_5593\Main.java:8: 错误: 需要class, interface或enum
        }
        ^
5 个错误