/in/Main.java:2: error: class, interface, or enum expected
publicclass Main{
^
/in/Main.java:3: error: class, interface, or enum expected
    public static void main(String args[])
                  ^
/in/Main.java:6: error: class, interface, or enum expected
     Integer a = sc.nextInt();
     ^
/in/Main.java:7: error: class, interface, or enum expected
        Integer b = sc.nextInt();
        ^
/in/Main.java:8: error: class, interface, or enum expected
        System.out.println(a + b);
        ^
/in/Main.java:9: error: class, interface, or enum expected
    }
    ^
6 errors