View Compilation Error

0_0_34148833_16641\Main.java:3: 错误: 需要class, interface或enum
public clas3 Main {
       ^
0_0_34148833_16641\Main.java:5: 错误: 需要class, interface或enum
public static void main (String[] args)
              ^
0_0_34148833_16641\Main.java:10: 错误: 需要class, interface或enum
while (input .hasNext())
^
0_0_34148833_16641\Main.java:14: 错误: 需要class, interface或enum
int number2 = input .nextInt() ;
^
0_0_34148833_16641\Main.java:16: 错误: 需要class, interface或enum
System. out ..printf ("%d\n\n" ,number1 + number2);
^
0_0_34148833_16641\Main.java:16: 错误: 非法 '.'
System. out ..printf ("%d\n\n" ,number1 + number2);
             ^
0_0_34148833_16641\Main.java:17: 错误: 需要class, interface或enum
}
^
0_0_34148833_16641\Main.java:20: 错误: 需要class, interface或enum
 }
 ^
8 个错误