如何在子程序中声明默认调用变量 [英] How to declare default call variables in a sub

问题描述

在C#中，我可以编写类似
的子代码

In C# i can write a sub like

public void example(Boolean closeControlOnFinish = true){
}

其中closeControlOnFinish默认为true，因此我可以调用example();而不必调用example(true);.

如何在Java中复制此内容?以下无效.另外请注意，该代码在公共类Download中，扩展为

Where closeControlOnFinish is by default true so i can call example(); without having to call example(true);.

How do I replicate this in java? The following doesn''t work. Additionally note that the code is in public class Download extends

java.awt.Panel.

public Download(Boolean closeControlOnFinish = true) {
}

推荐答案

Java中没有完全相同的功能，即使C#是在v.4中引入的.

要获得合理的解决方法，请查看以下答案:
http://stackoverflow.com/questions/965690/java-optional-parameters [ ^ ].

—SA

There is no exact same feature in Java, and even if C# it was introduced in v.4.

For a reasonable work-around, take a look at this answer:
http://stackoverflow.com/questions/965690/java-optional-parameters[^].

—SA

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