View Compilation Error

0_0_25790811_17855.cpp:1:1: error: 'package' does not name a type
 package a1002;
 ^
0_0_25790811_17855.cpp:3:1: error: 'import' does not name a type
 import java.io.*;
 ^
0_0_25790811_17855.cpp:4:1: error: 'import' does not name a type
 import java.util.*;
 ^
0_0_25790811_17855.cpp:5:1: error: 'import' does not name a type
 import java.util.regex.*;
 ^
0_0_25790811_17855.cpp:7:1: error: expected unqualified-id before 'public'
 public class Main {
 ^