threadgroup

ThreadGroup類(lèi)的toString()方法 (ThreadGroup Class toString() method)

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

  toString()方法在java.lang包中可用。

• toString() method is used to returns string denotation of this thread group (i.e. this method returns how to represent a string of this ThreadGroup).

  toString()方法用于返回該線程組的字符串符號(hào)(即，該方法返回如何表示此ThreadGroup的字符串)。

• toString() 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.

  toString()方法是一種非靜態(tài)方法，只能通過(guò)類(lèi)對(duì)象訪問(wèn)，如果嘗試使用類(lèi)名稱訪問(wèn)該方法，則會(huì)收到錯(cuò)誤消息。

• toString() method may throw an exception at the time of string denotation of this ThreadGroup.

  在此ThreadGroup的字符串表示形式時(shí)， toString()方法可能會(huì)引發(fā)異常。

  SecurityException – This exception may throw when the current thread is not permitted to update this Thread group.

  SecurityException-當(dāng)不允許當(dāng)前線程更新此Thread組時(shí)，可能引發(fā)此異常。

Syntax:

句法：

public String toString();

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 String – it denotes string of this thread group.

該方法的返回類(lèi)型為String –表示該線程組的字符串。

Example:

例：

// Java program to demonstrate the example // of String toString() method of ThreadGroup public class toString {public static void main(String[] args) {ThreadGroup th_grp1 = new ThreadGroup("th_grp - 1");ThreadGroup th_grp2 = new ThreadGroup("th_grp - 2");// By using getName() method is to display// thread group nameSystem.out.println("th_grp1.getName(): " + th_grp1.getName());System.out.println("th_grp2.getName(): " + th_grp2.getName());// By using toString() method is to string// representation of thread group System.out.println("th_grp1.toString(): " + th_grp1.toString());System.out.println("th_grp2.toString(): " + th_grp2.toString());} }

Output

輸出量

th_grp1.getName(): th_grp - 1 th_grp2.getName(): th_grp - 2 th_grp1.toString(): java.lang.ThreadGroup[name=th_grp - 1,maxpri=10] th_grp2.toString(): java.lang.ThreadGroup[name=th_grp - 2,maxpri=10]

翻譯自: https://www.includehelp.com/java/threadgroup-tostring-method-with-example.aspx

threadgroup

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