Das Schlüsselwort void wird in Java verwendet, um anzugeben, dass eine Methode keinen Wert zurückgibt. Es ist ein Rückgabetyp, der anzeigt, dass die Methode eine Aktion ausführt, aber kein Ergebnis liefert,
void是编程语言中最常见的关键字之一,从字面上理解,它是“空的、空集、空白”的意思,最常用于 表示函数的一种返回值类型。维基百科上有一个定义:Thevoidtype, in several programming languages derived from C and Algol68, is the type for the result of a function that retur ...
void是编程语言中最常见的关键字之一,从字面上理解,它是“空的、空集、空白”的意思,最常用于 表示函数的一种返回值类型。维基百科上有一个定义:Thevoidtype, in several programming languages derived from C and Algol68, is the type for the result of a function that retur ...
因此当你使用泛型时函数并不需要返回结果或某个对象不需要值时候这是可以使用java.lang.Void类型表示。 参考: java.lava.Void与void的比较 , http://stackoverflow.com/questions/10839042/what-is-the-difference-bethttp://ween-java-lang-void-and-void 如何判断函数返回void, http://stackoverflow.com/question...
{ /** * The {@code...("void"); /* * The Void class cannot be instantiated. */ private Void() {} } Void作为函数的返回结果表示函数返回...Void function(int a, int b) { //do something return null; } 在泛型出现之前,Void一般用于反射之中。...例如,下面的代码打印返回类型为void的...
java.lang.Void是一种类型,可以引用赋值 Void a = null; Void源码: public final class Void { /** * The {@code ("void"); /* * The Void class cannot be instantiated. */ private Void() {} } Void作为函数的返回结果表示函数返回 Void function(int a, int b) { //do something return ...
I am running the latest version I checked the documentation and found no answer I checked to make sure that this issue has not already been filed Expected Behavior I find it strange that in strict mode, even void returning Java methods r...
Void is commonly seen in older JavaScript code, particularly with javascript: URLs. Modern JavaScript practices have reduced its usage. However, understanding void remains important for legacy code. Basic void usageThe simplest use of void is to evaluate an expression and return undefined. main.js ...
The constructor is an unusual type of method because it has no return value. This is distinctly different from a void return value, in which the method returns nothing but you still have the option to make it return something else. Constructors return nothing and you don’t have an option...
Tip: If you want a method to return a value, you can use a primitive data type (such as int, char, etc.) instead of void, and use the return keyword inside the method:Example public class Main { static int myMethod(int x) { return 5 + x; } public static void main(String[] ...