<!DOCTYPE html>
<html>
<head>
<title>Login Page</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet"href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js">
</script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/js/bootstrap.min.js">
</script>
</head>
<body >
<div id="divi" height="100">
<form class="form-inline" role="form">
<div class="form-group" >
<label class="sr-only" for="em">Email:</label>
<input type="email" id="em" placeholder="Enter email" required >
</div>
<div class="form-group" >
<label class="sr-only" for="pwd">Password:</label>
<input type="password" id="pwd" placeholder="Enter password" required>
</div>
<button type="button" class="btn btn-primary">Login</button>
</form>
</div>
</body>
</html>
嗨，请帮我用电子邮件 ID 验证用户 ID，密码应包含大写小写字母和至少一个字符？
如果在声明中删除了单引号，则显示 11
class Sample
{
public static void main(String ar[])
{
char v1='5';
char v2='6';
System.out.println(v1 + v2);
}
}
输出：107
class SwitchDemo
{
public static void main(String ar[])
{
String name="aeiouuu";
int vo=0,co=0;
char c[]=name.toCharArray();
for(int i=0;i<name.length();i++)
{
switch(c[i])
{
case 'a':case 'e':case 'i':case 'o':case 'u':
vo++;
default :
co++;
System.out.println("co");
break;
}
}
System.out.println("Number of vowels are : "+vo);
System.out.println("Number of consonants are : "+co);
}
}
该程序的输出是
Number of vowels are : 7
Number of consonants are : 7
但是我无法理解这个节目,因为所有元音都是可能的元音？