编写Java程序，判断一个email地址是否合法
package com.lzg.class4;
public class Demo03 {
public static void main(String[]args){
String email="711026978@";
System.out.println(email+":"+(validate(email)?"Email地址合法":"Email地址不合法"));
}
public static boolean validate(String email){
boolean flag=true;
if(email.indexOf("@")==-1||email.indexOf(".")==-1){
flag=false;
}
if(flag){
if(email.indexOf("@")>email.indexOf("."))
flag=false;
}
return flag;
}
}