View Compilation Error

0_0_23208343_8339\Main.java:2: 错误: 需要class, interface或enum
    public static void main(String[] args) {
                  ^
0_0_23208343_8339\Main.java:4: 错误: 需要class, interface或enum
    	Scanner sc = new Scanner(System.in);
    	^
0_0_23208343_8339\Main.java:5: 错误: 需要class, interface或enum
    	while(true) {
    	^
0_0_23208343_8339\Main.java:7: 错误: 需要class, interface或enum
    	b=sc.nextInt();
    	^
0_0_23208343_8339\Main.java:8: 错误: 需要class, interface或enum
    	c=a+b;
    	^
0_0_23208343_8339\Main.java:9: 错误: 需要class, interface或enum
        System.out.println(c);
        ^
0_0_23208343_8339\Main.java:10: 错误: 需要class, interface或enum
        System.out.println("\n");
        ^
0_0_23208343_8339\Main.java:11: 错误: 需要class, interface或enum
    }
    ^
8 个错误