java IllegalStateException和NoTouchElementException之间有什么区别

Question

我想在下面的代码中抛出一个错误

if (!this.isAttached(object.getElementById(Name))) 
{
     throw new NoSuchElementException(Name);
}
this.clickElement(object.getElementById(Name));

哪一个是最适合抛出的异常：NoSuchElementException或IllegalStateException

Answer 1

您将从文档中了解更多信息：

NoSuchElementException Thrown by the nextElement method of an Enumeration to indicate that there are no more elements in the enumeration.

IllegalStateException Signals that a method has been invoked at an illegal or inappropriate time. In other words, the Java environment or Java application is not in an appropriate state for the requested operation.

在您的情况下，抛出NoSuchElementException或IllegalStateException甚至Exception的异常并不重要，因为它只抛出一条消息，而不是真正的异常

如果您阅读了任何异常的构造函数，您可以理解：

public AnyException(String s)

Constructs an AnyException with the specified detail message. A detail message is a String that describes this particular exception.