View Compilation Error

0_0_34151453_3934\Main.java:1: 错误: 需要class, interface或enum
public static void main(String[] args) {
              ^
0_0_34151453_3934\Main.java:3: 错误: 需要class, interface或enum
		int b=1;
		^
0_0_34151453_3934\Main.java:4: 错误: 需要class, interface或enum
		System.out.println(a+b);
		^
3 个错误