Java中的字符串截取(substring)的使用

import java.util.*; 
public class ZiFu {
	public static void main(String args[]){
		 System.out.println("请输入你要截取的字符串：");
		  Scanner scan=new Scanner(System.in);
	       
		  String word=scan.next();
	        System.out.println(word+"的首位字符为"+word.substring(0,1));
	        System.out.println(word+"的末尾字符为"+word.substring(word.length()-1));
		
	}
}