View Compilation Error

0_0_20157935_25528.cpp:1:1: error: 'import' does not name a type
 import java.util.*;
 ^
0_0_20157935_25528.cpp:6:9: error: expected ':' before 'void'
  public void perm(int arr[],int begin,int end){
         ^
0_0_20157935_25528.cpp:26:1: error: expected ';' after class definition
 }
 ^
0_0_20157935_25528.cpp:3:22: error: array must be initialized with a brace-enclosed initializer
  int ans[]=new int[24];
                      ^
0_0_20157935_25528.cpp:27:1: error: expected unqualified-id before 'public'
 public class hdu1716 {
 ^