View Compilation Error

0_0_36728334_4430.cpp:2:1: error: 'import' does not name a type
 import java.math.BigInteger;
 ^
0_0_36728334_4430.cpp:3:1: error: 'import' does not name a type
 import java.security.spec.RSAOtherPrimeInfo;
 ^
0_0_36728334_4430.cpp:4:1: error: 'import' does not name a type
 import java.util.Scanner;
 ^
0_0_36728334_4430.cpp:7:1: error: expected unqualified-id before 'public'
 public class dashuyunsuan {
 ^