線程類void setContextClassLoader(ClassLoader loader) (Thread Class void setContextClassLoader(ClassLoader loader))

• This method is available in package java.lang.Thread.setContextClassLoader(ClassLoader loader).

  軟件包java.lang.Thread.setContextClassLoader(ClassLoader loader)中提供了此方法。

• This method is used to sets the context ClassLoader for this(Current)Thread.

  此方法用于為此(當(dāng)前)線程設(shè)置上下文ClassLoader。

• The context ClassLoader can be set at the time of thread creation by which thread creator could access the thread and provide appropriate the class loader to code run in the program at the time of class loading.

  可以在創(chuàng)建線程時(shí)設(shè)置上下文ClassLoader，通過(guò)該上下文，線程創(chuàng)建者可以訪問(wèn)線程并提供適當(dāng)?shù)念惣虞d器，以在類加載時(shí)在程序中運(yùn)行代碼。

• This method is not static so this method is accessible with Thread class object it is not accessible with the class name.

  此方法不是靜態(tài)的，因此該方法可通過(guò)Thread類對(duì)象訪問(wèn)，而無(wú)法通過(guò)類名稱訪問(wèn)。

• The return type of this method is void so it does not return anything.

  此方法的返回類型為void，因此它不返回任何內(nèi)容。

• This method raises an exception (SecurityException) if this thread could not set the context ClassLoader.

  如果此線程無(wú)法設(shè)置上下文ClassLoader，則此方法引發(fā)異常(SecurityException)。

Syntax:

句法：

void setContextClassLoader(ClassLoader loader){}

Parameter(s):

參數(shù)：

We pass only one object as a parameter in the method of the Thread and the parameter is the context ClassLoader for this thread.

我們僅在Thread方法中傳遞一個(gè)對(duì)象作為參數(shù)，并且該參數(shù)是該線程的上下文ClassLoader。

Return value:

返回值：

The return type of this method is void, it does not return anything.

此方法的返回類型為void ，它不返回任何內(nèi)容。

Java程序演示setContextClassLoader()方法的示例 (Java program to demonstrate example of setContextClassLoader() method)

/* We will use Thread class methods so we are importing the package but it is not mandate because it is imported by default */import java.lang.Thread;class SetContextClassLoader extends Thread {// Override run() of Thread classpublic void run() {//Display a message for the end user System.out.println("The name of this thread is " + " " + Thread.currentThread().getName());}public static void main(String[] args) {// Creating an object of SetContextClassLoader classSetContextClassLoader ccl = new SetContextClassLoader();// Creating an object of Thread classThread th = new Thread(ccl);// Thread class start() method will call and it will ultimately th.start();// getContextClassLoader() will return context ClassLoader // and create a reference of ClassLoaderClassLoader cl = th.getContextClassLoader();// By using setContextClassLoader(ClassLoader cl) sets // the context ClassLoader for this thread thth.setContextClassLoader(cl);System.out.println("The Context ClassLoader for this thread th is = " + cl);System.out.println("The Parent of the ClassLoader is = " + cl.getParent());System.out.println("The Class of the ClassLoader is = " + cl.getClass());} }

Output

輸出量

E:\Programs>javac SetContextClassLoader.javaE:\Programs>java SetContextClassLoader The Context ClassLoader for this thread th is = [email?protected]The name of this thread is Thread-1The Parent of the ClassLoader is = [email?protected]The Class of the ClassLoader is = class sun.misc.Launcher$AppClassLoader

翻譯自: https://www.includehelp.com/java/thread-class-void-setcontextclassloader-classloader-loader-method-with-example.aspx

總結(jié)

以上是生活随笔為你收集整理的Java线程类void setContextClassLoader（ClassLoader loader）方法，带示例的全部?jī)?nèi)容，希望文章能夠幫你解決所遇到的問(wèn)題。

如果覺(jué)得生活随笔網(wǎng)站內(nèi)容還不錯(cuò)，歡迎將生活随笔推薦給好友。