View Compilation Error

0_0_31631907_17184\Main.java:1: 错误: 需要class, interface或enum
	public static void main(String[] args) {
	              ^
0_0_31631907_17184\Main.java:3: 错误: 需要class, interface或enum
		int a, b;
		^
0_0_31631907_17184\Main.java:4: 错误: 需要class, interface或enum
		while(s.hasNext()){
		^
0_0_31631907_17184\Main.java:6: 错误: 需要class, interface或enum
			b = s.nextInt();
			^
0_0_31631907_17184\Main.java:7: 错误: 需要class, interface或enum
			System.out.println(a + b);
			^
0_0_31631907_17184\Main.java:8: 错误: 需要class, interface或enum
		}
		^
6 个错误