View Compilation Error

0_0_23693433_5942\Main.java:9: 错误: 需要')'
   if(A == 0 && B == 0 n == 0){
                      ^
0_0_23693433_5942\Main.java:9: 错误: 不是语句
   if(A == 0 && B == 0 n == 0){
                         ^
0_0_23693433_5942\Main.java:9: 错误: 需要';'
   if(A == 0 && B == 0 n == 0){
                             ^
0_0_23693433_5942\Main.java:16: 错误: 需要')'
      num[i]=(A*num[i-1]+B*num[i-2]%7;
                                     ^
0_0_23693433_5942\Main.java:20: 错误: 解析时已到达文件结尾
}
 ^
5 个错误