threadgroup

ThreadGroup类的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()方法用于返回该线程组的字符串符号(即，该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()方法是一种非静态方法，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。

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

  在此ThreadGroup的字符串表示形式时， toString()方法可能会引发异常。

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

  SecurityException-当不允许当前线程更新此Thread组时，可能引发此异常。

Syntax:

句法：

    public String toString();

Parameter(s):

参数：

• It does not accept any parameter.

  它不接受任何参数。

Return value:

返回值：

The return type of this method is String – it denotes string of this thread group.

该方法的返回类型为String –表示该线程组的字符串。

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 name
System.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

输出量

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]

翻译自: https://www.includehelp.com/java/threadgroup-tostring-method-with-example.aspx

threadgroup