View Compilation Error

0_0_30517562_6420.cpp:90:9: error: stray '@' in program
         @Override
         ^
0_0_30517562_6420.cpp:1:1: error: 'import' does not name a type
 import java.util.ArrayDeque;
 ^
0_0_30517562_6420.cpp:2:1: error: 'import' does not name a type
 import java.util.Queue;
 ^
0_0_30517562_6420.cpp:3:1: error: 'import' does not name a type
 import java.util.Scanner;
 ^
0_0_30517562_6420.cpp:5:1: error: expected unqualified-id before 'public'
 public class Main {
 ^