java 根據類名示例化類

類的類getEnclosingClass()方法 (Class class getEnclosingClass() method)

• getEnclosingClass() method is available in java.lang package.

  getEnclosingClass()方法在java.lang包中可用。

• getEnclosingClass() method is used to return recent or immediately enclosing class of the underlying class.

  getEnclosingClass()方法用于返回基礎類的最近或立即封閉的類。

• getEnclosingClass() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.

  getEnclosingClass()方法是一個非靜態方法，僅可通過類對象訪問，如果嘗試使用類名稱訪問該方法，則會收到錯誤消息。

• getEnclosingClass() method does not throw an exception at the time of returning Class object.

  返回Class對象時， getEnclosingClass()方法不會引發異常。

Syntax:

句法：

public Class getEnclosingClass();

Parameter(s):

參數：

• It does not accept any parameter.

  它不接受任何參數。

Return value:

返回值：

The return type of this method is Class, it returns recently enclosing class of the underlying class.

該方法的返回類型為Class ，它返回基礎類的最近封閉類。

Note:

注意：

• When this class has no top class, null is returned.

  當此類沒有頂級類別時，將返回null 。

Example:

例：

// Java program to demonstrate the example // of Class getEnclosingClass () method of Class import java.lang.reflect.*;public class GetEnclosingClassOfClass {public GetEnclosingClassOfClass() {// OuterClass is inside in GetEnclosingClassOfClass class // that means OuterClass is inner class of // GetEnclosingClassOfClassclass OuterClass {public void outerMethod() {// InnerClass is inside in OuterClass class that means// InnerClass is inner class of OuterClassclass InnerClass {public void innerMethod() {System.out.println(getClass().getEnclosingClass());}}System.out.println(getClass().getEnclosingClass());// Creating an instance of InnerClassInnerClass ic = new InnerClass();ic.innerMethod();}}// Creating an instance of OuterClassOuterClass oc = new OuterClass();oc.outerMethod();}public static void main(String[] args) {GetEnclosingClassOfClass enclo_class = new GetEnclosingClassOfClass();} }

Output

輸出量

class GetEnclosingClassOfClass class GetEnclosingClassOfClass$1OuterClass

翻譯自: https://www.includehelp.com/java/class-class-getenclosingclass-method-with-example.aspx

java 根據類名示例化類

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