View Compilation Error

0_0_18474909_20468.cpp:1:5: error: 'import' does not name a type
     import java.math.BigDecimal;   
     ^
0_0_18474909_20468.cpp:2:5: error: 'import' does not name a type
     import java.util.Scanner;   
     ^
0_0_18474909_20468.cpp:4:5: error: expected unqualified-id before 'public'
     public class dashujiecheng {   
     ^