View Compilation Error

0_0_31953751_7394.cpp:19:2: error: stray '@' in program
  @Override
  ^
0_0_31953751_7394.cpp:1:1: error: 'import' does not name a type
 import java.io.BufferedReader;
 ^
0_0_31953751_7394.cpp:2:1: error: 'import' does not name a type
 import java.io.IOException;
 ^
0_0_31953751_7394.cpp:3:1: error: 'import' does not name a type
 import java.io.InputStream;
 ^
0_0_31953751_7394.cpp:4:1: error: 'import' does not name a type
 import java.io.InputStreamReader;
 ^
0_0_31953751_7394.cpp:5:1: error: 'import' does not name a type
 import java.io.StreamTokenizer;
 ^
0_0_31953751_7394.cpp:6:1: error: 'import' does not name a type
 import java.util.Arrays;
 ^
0_0_31953751_7394.cpp:8:23: error: expected initializer before 'Comparable'
 class Node implements Comparable<Node>{
                       ^