View Compilation Error

0_0_17355452_5269\Main.java:1: 错误: 需要class, interface或enum
importjava.util.*;      
^
0_0_17355452_5269\Main.java:2: 错误: 需要class, interface或enum
publicclass Main {    
^
0_0_17355452_5269\Main.java:5: 错误: 需要class, interface或enum
 int a, b;      
 ^
0_0_17355452_5269\Main.java:6: 错误: 需要class, interface或enum
while(true) {               
^
0_0_17355452_5269\Main.java:8: 错误: 需要class, interface或enum
  b = cin.nextInt();   
  ^
0_0_17355452_5269\Main.java:9: 错误: 需要class, interface或enum
 if(a==b&&a==0) break; 
 ^
0_0_17355452_5269\Main.java:10: 错误: 需要class, interface或enum
else  
^
0_0_17355452_5269\Main.java:12: 错误: 需要class, interface或enum
  }       
  ^
8 个错误