View Compilation Error

0_0_34389831_17125.cpp:3:1: error: stray '\277' in program
 public class 课堂练习1 {
 ^
0_0_34389831_17125.cpp:3:1: error: stray '\316' in program
0_0_34389831_17125.cpp:3:1: error: stray '\314' in program
0_0_34389831_17125.cpp:3:1: error: stray '\303' in program
0_0_34389831_17125.cpp:3:1: error: stray '\301' in program
0_0_34389831_17125.cpp:3:1: error: stray '\267' in program
0_0_34389831_17125.cpp:3:1: error: stray '\317' in program
0_0_34389831_17125.cpp:3:1: error: stray '\260' in program
0_0_34389831_17125.cpp:5:3: error: stray '@' in program
   @SuppressWarnings("resource")
   ^
0_0_34389831_17125.cpp:1:1: error: 'package' does not name a type
 package project1;
 ^
0_0_34389831_17125.cpp:2:1: error: 'import' does not name a type
 import java.util.*;
 ^
0_0_34389831_17125.cpp:3:1: error: expected unqualified-id before 'public'
 public class 课堂练习1 {
 ^