ClassLoader類setDefaultAssertionStatus()方法 (ClassLoader Class setDefaultAssertionStatus() method)

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

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

• setDefaultAssertionStatus() method is used to sets the default assertion status for this class loader to load the class. If, we use class loaded by this class loader later will have assertion enabled or disabled by default.

  setDefaultAssertionStatus()方法用于設置此類加載器的默認聲明狀態，以加載該類。 如果，我們使用由該類加載器加載的類，則默認情況下將啟用或禁用斷言。

• setDefaultAssertionStatus() 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.

  setDefaultAssertionStatus()方法是一個非靜態方法，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。

• setDefaultAssertionStatus() method does not throw an exception at the time of set default assertion status of the class.

  在設置類的默認斷言狀態時， setDefaultAssertionStatus()方法不會引發異常。

Syntax:

句法：

    public void setDefaultAssertionStatus(boolean status);

Parameter(s):

參數：

• boolean status – represents the status of assertions it returns true when class loaded by this class loader will have assertion enabled by default.

  布爾狀態 –表示斷言的狀態，當此類加載器加載的類將默認啟用斷言時，它返回true。

Return value:

返回值：

The return type of this method is void, it returns nothing.

此方法的返回類型為void ，不返回任何內容。

Example:

例：

// Java program to demonstrate the example 
// of void setDefaultAssertionStatus () method of ClassLoader 
public class setDefaultAssertionStatusOfClassLoader {
public static void main(String[] args) throws Exception {
// Load a class
Class cl = Class.forName("setDefaultAssertionStatusOfClassLoader");
// It returns the ClassLoader associated with the
// class Object
ClassLoader loader = cl.getClassLoader();
// Display loader
System.out.println("loader Class: " + loader.getClass());
// By using setDefaultAssertionStatus() method is to set the 
//the default status 
loader.setDefaultAssertionStatus(true);
}
}

Output

輸出量

loader Class: class jdk.internal.loader.ClassLoaders$AppClassLoader

翻譯自: https://www.includehelp.com/java/classloader-setdefaultassertionstatus-method-with-example.aspx