View Compilation Error

0_0_30256172_9048.cpp:1:1: error: 'import' does not name a type
 import java.io.*;
 ^
0_0_30256172_9048.cpp:2:1: error: 'import' does not name a type
 import java.math.BigInteger;
 ^
0_0_30256172_9048.cpp:3:1: error: 'import' does not name a type
 import java.util.StringTokenizer;
 ^
0_0_30256172_9048.cpp:5:1: error: expected unqualified-id before 'public'
 public class Main {
 ^