View Compilation Error

0_0_22080856_18724.cpp:1:1: error: 'package' does not name a type
 package lianxi;
 ^
0_0_22080856_18724.cpp:4:1: error: 'import' does not name a type
 import java.math.*;
 ^
0_0_22080856_18724.cpp:5:1: error: 'import' does not name a type
 import java.util.*;
 ^
0_0_22080856_18724.cpp:6:1: error: expected unqualified-id before 'public'
 public class lianxi {
 ^