View Compilation Error

0_0_17354762_31519\Main.java:1: 错误: 需要class, interface或enum
importjava.util.*;     
^
0_0_17354762_31519\Main.java:2: 错误: 需要class, interface或enum
publicclass Main {    
^
0_0_17354762_31519\Main.java:5: 错误: 需要class, interface或enum
int a, b;      
^
0_0_17354762_31519\Main.java:6: 错误: 需要class, interface或enum
while (cin.hasNextInt()) {              
^
0_0_17354762_31519\Main.java:8: 错误: 需要class, interface或enum
b = cin.nextInt();    
^
0_0_17354762_31519\Main.java:9: 错误: 需要class, interface或enum
System.out.println(a + b);            
^
0_0_17354762_31519\Main.java:10: 错误: 需要class, interface或enum
}      
^
7 个错误