View Compilation Error

0_0_38883340_14352\Main.java:1: 错误: 需要class, interface或enum
public static void main(String[] args) {
              ^
0_0_38883340_14352\Main.java:3: 错误: 需要class, interface或enum
		Scanner scan=new Scanner(System.in);
		^
0_0_38883340_14352\Main.java:4: 错误: 需要class, interface或enum
		a=scan.nextInt();
		^
0_0_38883340_14352\Main.java:5: 错误: 需要class, interface或enum
		b=scan.nextInt();
		^
0_0_38883340_14352\Main.java:6: 错误: 需要class, interface或enum
		sum=a+b;
		^
0_0_38883340_14352\Main.java:7: 错误: 需要class, interface或enum
		System.out.println(sum);
		^
0_0_38883340_14352\Main.java:9: 错误: 需要class, interface或enum
	}
	^
7 个错误