View Compilation Error

0_0_29346726_326\Main.java:3: 错误: 需要class, interface或enum
public static void main(String[] args){
              ^
0_0_29346726_326\Main.java:5: 错误: 需要class, interface或enum
		while(in.hasNextInt())
		^
0_0_29346726_326\Main.java:8: 错误: 需要class, interface或enum
			int b = in.nextInt();
			^
0_0_29346726_326\Main.java:9: 错误: 需要class, interface或enum
			System.out.println(a+b);
			^
0_0_29346726_326\Main.java:10: 错误: 需要class, interface或enum
		}
		^
5 个错误