如何处理用户定义的异常，并在处理完之后恢复程序流程 [英] How can I handle user defined exceptions and after handling them resume the flow of program

问题描述

/**
 * An exception thrown when an illegal side pit was
 * specified (i.e. not in the range 1-6) for a move
 */
public class IllegalSidePitNumException extends RuntimeException
{
    /**
     *  Exception constructor.
     *  @param sidePitNum the illegal side pit that was selected.
     */
    public IllegalSidePitNumException(int sidePitNum)
    {
        super("No such side pit number: "+sidePitNum);
    }
}

如何在程序中使用它，然后恢复为了那里？我不希望程序结束，但想要处理异常并继续。

How do I use this in a program and then resume for there? I do not want the program to end but want to handle the exception and continue.

推荐答案

您需要使用尝试 / 捕获。您可以从Sun（Oracle）的异常中了解很多有关异常处理的信息。处理教程。在该教程中，请参见有关捕获和处理该特定地址的部分，以解决您的问题。

You need to use try/catch. You can learn a lot about exception handling from Sun's (Oracle's) exception handling tutorials. In that tutorial look at the sections about Catching and Handling that specific address your question.

例如，在调用可能引发此异常的方法的代码中：

For example, in the code that calls the method that may throw this exception:

try {
    ...call method here...
} catch (IllegalSidePitNumException e) {
    // Display message (per your comment to BalusC)
    System.err.println(e.getMessage());
    e.printStackTrace(System.err);

    // You can also handle the exception other ways (but do not ignore it)
    // Such as correcting some offending values, setting up for a retry
    // logging the information, throwing a different exception
}

...program continues executing here...

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