words of a sentence in different lines

Write a program to display the words of a sentence in different lines
For example:

Input :
Hello! Good Morning
Result :
Hello!
Good
morning

Input :
Hai there
Result :
Hai
there

Solution :
//Java

import java.util.Scanner;

public class words_separate_Lines {
    public static void main(String[]ar){
        Scanner a=new Scanner(System.in);
        String str=a.nextLine();
        char ch[]=str.toCharArray();
        for(int i=0;i<ch.length;i++){
            if(ch[i]==' '){
                System.out.println(' ');
            }
            else{
                System.out.print(ch[i]);
            }
        }
    }
    
}