View Compilation Error

0_0_29478314_28220.cpp:1:1: error: expected unqualified-id before numeric constant
 1 import java.math.BigInteger;
 ^
0_0_29478314_28220.cpp:2:3: error: expected unqualified-id before numeric constant
   2 import java.util.Scanner;
   ^
0_0_29478314_28220.cpp:3:3: error: expected unqualified-id before numeric constant
   3 import java.io.*;
   ^
0_0_29478314_28220.cpp:4:3: error: expected unqualified-id before numeric constant
   4 
   ^