View Compilation Error

1_733_2187_2398.cpp:1:1: error: 'import' does not name a type
 import java.io.*;
 ^
1_733_2187_2398.cpp:2:1: error: 'import' does not name a type
 import java.math.BigInteger;
 ^
1_733_2187_2398.cpp:3:1: error: 'import' does not name a type
 import java.util.Scanner;
 ^
1_733_2187_2398.cpp:5:1: error: expected unqualified-id before 'public'
 public class Main {
 ^