View Compilation Error

0_0_29029628_29449.cpp:1:1: error: 'import' does not name a type
 import java.util.HashSet;
 ^
0_0_29029628_29449.cpp:2:1: error: 'import' does not name a type
 import java.util.Scanner;
 ^
0_0_29029628_29449.cpp:4:1: error: expected unqualified-id before 'public'
 public class digui {
 ^