View Compilation Error

0_0_1556780_15993\Main.java:1: 需要 "class" 或 "interface"
                                flg = true;
                                ^
0_0_1556780_15993\Main.java:2: 需要 "class" 或 "interface"
                                rst = BigInteger.valueOf( tmprst );
                                ^
0_0_1556780_15993\Main.java:3: 需要 "class" 或 "interface"
                        }
                        ^
0_0_1556780_15993\Main.java:59: 需要 "class" 或 "interface"
h
 ^
4 错误