View Compilation Error

0_0_19079421_18539\Main.java:2: 错误: 需要class, interface或enum
                int num = 0;
                ^
0_0_19079421_18539\Main.java:3: 错误: 需要class, interface或enum
                while(n%i==0){
                ^
0_0_19079421_18539\Main.java:5: 错误: 需要class, interface或enum
                    num++;
                    ^
0_0_19079421_18539\Main.java:6: 错误: 需要class, interface或enum
                }
                ^
0_0_19079421_18539\Main.java:9: 错误: 需要class, interface或enum
                }
                ^
0_0_19079421_18539\Main.java:13: 错误: 需要class, interface或enum
            }
            ^
0_0_19079421_18539\Main.java:16: 错误: 需要class, interface或enum
        }
        ^
7 个错误