類類getComponentType()方法 (Class class getComponentType() method)

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

  getComponentType()方法在java.lang包中可用。

• getComponentType() method is used to returns the Class denoting the component type of an array.

  getComponentType()方法用于返回表示數(shù)組的組件類型的Class。

• getComponentType() 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.

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

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

  返回Class時， getComponentType()方法不會引發(fā)異常。

Syntax:

句法：

public Class getComponentType();

Parameter(s):

參數(shù)：

• It does not accept any parameter.

  它不接受任何參數(shù)。

Return value:

返回值：

The return type of this method is Class, it returns the component type in terms of "Class" type.

該方法的返回類型為Class ，它以“ Class”類型的形式返回組件類型。

Example:

例：

// Java program to demonstrate the example // of Class getComponentType() method of Classpublic class GetComponentTypeOfClass {public static void main(String[] args) {// Creating an array of Integer typeInteger[] num = new Integer[] {10,20,30};// It returnd the Class denoting the component typeClass cl = num.getClass();// By using getComponentType() method is used to// get the component of the given ClassClass comp_type = cl.getComponentType();// If any component existsif (comp_type != null)System.out.println("Component Type: " + comp_type);elseSystem.out.println("No Component Type Associated");} }

Output

輸出量

Component Type: class java.lang.Integer

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

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