View Compilation Error

0_0_25941028_1866.cpp:174:3: error: stray '@' in program
   @Override
   ^
0_0_25941028_1866.cpp:1:1: error: 'import' does not name a type
 import java.io.BufferedReader;
 ^
0_0_25941028_1866.cpp:2:1: error: 'import' does not name a type
 import java.io.BufferedWriter;
 ^
0_0_25941028_1866.cpp:3:1: error: 'import' does not name a type
 import java.io.InputStreamReader;
 ^
0_0_25941028_1866.cpp:4:1: error: 'import' does not name a type
 import java.io.OutputStreamWriter;
 ^
0_0_25941028_1866.cpp:5:1: error: 'import' does not name a type
 import java.util.Collections;
 ^
0_0_25941028_1866.cpp:6:1: error: 'import' does not name a type
 import java.util.LinkedList;
 ^
0_0_25941028_1866.cpp:8:1: error: expected unqualified-id before 'public'
 public class Main {
 ^