View Compilation Error

0_0_28728742_18768\Main.java:1: 错误: 需要class, interface或enum
public static void main(String[] args){
              ^
0_0_28728742_18768\Main.java:3: 错误: 需要class, interface或enum
  while(true){
  ^
0_0_28728742_18768\Main.java:5: 错误: 需要class, interface或enum
    int b = sc.nextInt();
    ^
0_0_28728742_18768\Main.java:6: 错误: 需要class, interface或enum
    System.out.println();
    ^
0_0_28728742_18768\Main.java:7: 错误: 需要class, interface或enum
    System.out.pritnln(a+b);
    ^
0_0_28728742_18768\Main.java:8: 错误: 需要class, interface或enum
  }
  ^
6 个错误