class P09_StringBuilder {
	
	public static void main(String[] args)
	{
		System.out.println(greet("Tom"));
	}
	
	public static String greet(String name)
	{
		StringBuilder sb = new StringBuilder();
		sb.append("Hello ");
		sb.append(name);
		
		String result=sb.toString();
		return result;
	}
}