View Compilation Error

0_0_34480296_9510.cpp:1:1: error: 'import' does not name a type
 import java.util.ArrayList;
 ^
0_0_34480296_9510.cpp:2:1: error: 'import' does not name a type
 import java.util.Collection;
 ^
0_0_34480296_9510.cpp:3:1: error: 'import' does not name a type
 import java.util.Scanner;
 ^
0_0_34480296_9510.cpp:5:1: error: expected unqualified-id before 'public'
 public class Demo1 {
 ^