Java语言程序设计基础篇_第十版_梁勇_4.20字符串处理课后答案

liang183

package nameyu;import java.util.Scanner;public class Test {

    /**

     * @param args

     */

    public static void main(String[] args) {

        // TODO Auto-generated method stub

        Scanner input=new Scanner(System.in);

        System.out.print("Enter a string:");

        String numbers=input.nextLine();

        int l=numbers.length();

        char ch=numbers.charAt(0);

        System.out.println("length :"+l);

        System.out.println("first character :"+ch);

     }

  }