View Compilation Error

0_0_18958378_542.cpp:1:1: error: 'package' does not name a type
 package Acm;
 ^
0_0_18958378_542.cpp:3:1: error: 'import' does not name a type
 import java.util.*;
 ^
0_0_18958378_542.cpp:4:1: error: expected unqualified-id before 'public'
 public class Main{
 ^