Answer:
String name = stdin.nextLine();
    System.out.println("Greetings "+name);
Explanation:
See a complete java program below
import java.util.Scanner;
public class num7 {
  public static void main(String[] args) {
   Scanner stdin = new Scanner(System.in);
    System.out.println("Enter a name");
    String name = stdin.nextLine();
    System.out.println("Greetings "+name);
  }
}