View Compilation Error

0_0_16579636_30976.cpp:1:1: error: 'import' does not name a type
 import java.util.*;
 ^
0_0_16579636_30976.cpp:3:9: error: expected ':' before 'static'
  public static void main (String args[]){
         ^
0_0_16579636_30976.cpp:3:27: error: 'String' has not been declared
  public static void main (String args[]){
                           ^
0_0_16579636_30976.cpp:16:1: error: expected ';' after class definition
 }
 ^
0_0_16579636_30976.cpp: In static member function 'static void Main::main(int*)':
0_0_16579636_30976.cpp:4:2: error: 'Scanner' was not declared in this scope
  Scanner sc = new Scanner(System.in);
  ^
0_0_16579636_30976.cpp:5:8: error: 'sc' was not declared in this scope
  while(sc.hasNext()){
        ^
0_0_16579636_30976.cpp:10:10: error: 'Math' was not declared in this scope
  sum=sum+Math.sqrt(a);
          ^
0_0_16579636_30976.cpp:13:2: error: 'System' was not declared in this scope
  System.out.printf("%.2f\r\n",sum);
  ^