ClassLoader类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()方法用于设置此类加载器的默认声明状态，以加载该类。 如果，我们使用由该类加载器加载的类，则默认情况下将启用或禁用断言。

• 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()方法是一个非静态方法，只能通过类对象访问，如果尝试使用类名称访问该方法，则会收到错误消息。

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

  在设置类的默认断言状态时， setDefaultAssertionStatus()方法不会引发异常。

Syntax:

句法：

public void setDefaultAssertionStatus(boolean status);

Parameter(s):

参数：

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

  布尔状态 –表示断言的状态，当此类加载器加载的类将默认启用断言时，它返回true。

Return value:

返回值：

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

此方法的返回类型为void ，不返回任何内容。

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

输出量

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

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