Reverse sentence, with input and output

An English statement is emitted in reverse order from the word unit. For example, "I am a boy", in reverse order after the discharge of "Boy a AM I"
All words are separated by a space with no other characters in the statement except the English letters

Interface description

/**
* Inverted sentence
*
* @param sentence The original sentence
* @return The inverted sentence
*/
public string Reverse (string sentence);

Enter a description:

An English statement is emitted in reverse order from the word unit.

Output Description:

Get a sentence in reverse order
Enter an example:

I am a Boy

Output Example:

Boy a AM I

Import Java.util.Scanner;

public class main{public
	void Swap (char [] arr,int Front,int end) {while
		(front<end) {
			char tmp;
			Tmp=arr[front];
			Arr[front]=arr[end];
			arr[end]=tmp;
			front++;
			end-- 
		}
	}
	public string Swapwords (String str) {
		
		char[] Chararry=str.tochararray ();
		int len=chararry.length;
		int begin=0;
		
		Swap (Chararry, 0, len-1);
	
		for (int i = 0;i < len;i++) {
			if (chararry[i]== ') {
				swap (Chararry, begin, i-1);
				Begin=i+1		
			}
		}
		Swap (Chararry, begin, len-1);
		return new String (Chararry);
		
		
	}
	

	 

	public static void Main (string[] args) {
		//TODO auto-generated method stub
		StringBuilder string=new Stringbuil Der ();
		Scanner Scanner =new  Scanner (system.in);
		while (Scanner.hasnext ()) {
			string.append (Scanner.nextline ());
			 
			System.out.println (New Main (). Swapwords (new String));}}