View Compilation Error

0_0_28673404_31546\Main.java:1: 错误: 需要class, interface或enum
public static void main( String args[] ) {
              ^
0_0_28673404_31546\Main.java:3: 错误: 需要class, interface或enum
		while(true) {
		^
0_0_28673404_31546\Main.java:5: 错误: 需要class, interface或enum
			int b = sc.nextInt();
			^
0_0_28673404_31546\Main.java:6: 错误: 需要class, interface或enum
			System.out.print(a+b);
			^
0_0_28673404_31546\Main.java:7: 错误: 需要class, interface或enum
			System.out.println();
			^
0_0_28673404_31546\Main.java:8: 错误: 需要class, interface或enum
		}
		^
6 个错误