Notice the required attribute of the email tag above.
注意上面email标签的required属性。
Utilizing the required attribute is a form of default validation.
利用required属性是一种默认验证形式。
The JSTL out tag has just one required attribute, the value attribute.
JSTL out标记只具有一个必选属性，即value属性。
Through WebSphere admin scripting, you can specify a value for the required attribute.
通过WebSphere管理脚本，您可以为所需属性指定值。
Many attributes have default values, but only the required attribute must be assigned a value.
许多属性具有缺省值，但只有必需属性必须分配值。
This is a required attribute, and cannot be left out.
这是一个必须的属性，不能遗漏。
The final required attribute is duration, which specifies the time for this animation step in milliseconds.
最后一个必需的属性是duration，该属性指定动画所经历的时间，以毫秒计。
This command has one required attribute called controller to specify the name of the controller to create the Selenium test.
此命令有个属性controller用来指定控制器的名称，以创建Selenium测试。
Entity is used to create the actual domain objects and has one required attribute, class, to specify the name of the entity.
Entity用于创建实际域对象，且有一个必要属性class，用于指定实体的名称。
The URL for the content to be imported is specified through the url attribute, which is <c:import>'s only required attribute.
通过url属性指定将要导入内容的 URL，这个属性是 <c:import> 的唯一一个必选属性。
Unlike the required attribute, the MANDATORY attribute will not start a transaction if one does not exist, but rather will throw an exception indicating that a transaction is required.
与REQUIRED属性不同，MANDATORY属性将不会开始不存在的事务，而是抛出一个异常，指示需要事务。
The new model has Name and Password properties, both of which are decorated with the Required attribute so that I can use model validation to check that the user has provided values.
新模型具有Name和Password属性，两者都用Required注解属性进行了注释，以使我能够使用模型验证来检查用户是否提供了这些属性的值。
The main point here is always to use either the MANDATORY or REQUIRED attribute instead of REQUIRES_NEW unless you have a reason to use it for reasons similar those to the audit example.
这里要注意的一点是，要始终使用MANDATORY或REQUIRED属性，而不是REQUIRES_NEW，除非您有足够的理由来使用它，类似审计示例中的那些理由。
However, it is also possible to declare any of them as optional by setting the 'required' attribute to 'false'.
然而，也可以将required属性值设置为false来声明它们中的任何一个。
However, it is also possible to declare any of them as optional by setting the 'required' attribute to 'false'.
然而，也可以将required属性值设置为false来声明它们中的任何一个。
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