View Compilation Error

0_0_18439720_28743.cpp:1:1: error: stray '\264' in program
 package 大数加减;
 ^
0_0_18439720_28743.cpp:1:1: error: stray '\363' in program
0_0_18439720_28743.cpp:1:1: error: stray '\312' in program
0_0_18439720_28743.cpp:1:1: error: stray '\375' in program
0_0_18439720_28743.cpp:1:1: error: stray '\274' in program
0_0_18439720_28743.cpp:1:1: error: stray '\323' in program
0_0_18439720_28743.cpp:1:1: error: stray '\274' in program
0_0_18439720_28743.cpp:1:1: error: stray '\365' in program
0_0_18439720_28743.cpp:1:1: error: 'package' does not name a type
0_0_18439720_28743.cpp:2:1: error: 'import' does not name a type
 import java.math.*;
 ^
0_0_18439720_28743.cpp:3:1: error: 'import' does not name a type
 import java.util.Scanner;
 ^
0_0_18439720_28743.cpp:4:1: error: expected unqualified-id before 'public'
 public class BigNumber {
 ^