View Compilation Error

0_0_36183897_29171.cpp:15:2: error: stray '@' in program
  @Override
  ^
0_0_36183897_29171.cpp:29:2: error: stray '@' in program
  @Override
  ^
0_0_36183897_29171.cpp:1:1: error: 'package' does not name a type
 package hdoj_1007;
 ^
0_0_36183897_29171.cpp:3:1: error: 'import' does not name a type
 import java.io.BufferedInputStream;
 ^
0_0_36183897_29171.cpp:4:1: error: 'import' does not name a type
 import java.util.Arrays;
 ^
0_0_36183897_29171.cpp:5:1: error: 'import' does not name a type
 import java.util.Comparator;
 ^
0_0_36183897_29171.cpp:6:1: error: 'import' does not name a type
 import java.util.Scanner;
 ^
0_0_36183897_29171.cpp:8:23: error: expected initializer before 'Comparable'
 class Node implements Comparable<Node>{
                       ^