十五章示例6

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package sll1;import java.util.Scanner;public class shili6 {/** * @param args */public static void main(String[] args) {// TODO Auto-generated method stub   Scanner input=new Scanner(System.in);    boolean fileCorrect=false;    boolean emailCorrect=false;    System.out.println("-------欢迎进入作业提交系统------");    System.out.println("请输入java文件名:");    String name=input.next();    System.out.println("请输入你的邮箱:");    String email=input.next();    int index=name.lastIndexOf(".");    if(index!=-1&&index!=0&&name.substring(index+1,name.length()).equals("java")){    fileCorrect=true;        }else{    System.out.println("文件名无效");    }    if(email.indexOf('@')!=-1&&email.indexOf('.')>email.indexOf('@')){     emailCorrect=true;        }else {    System.out.println("E-email无效");    }    if(fileCorrect&& emailCorrect){    System.out.println("提交作业成功");    }else{    System.out.println("失败");    }}}

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