multithreading - java threads common questions -

-

I have a few questions about the Java thread:

  1. If I have a class Is the number of threads that when a thread is exited (1) from the command line to exit, does it exit the entire app including thread or other threads?

2. How can I inform one thread to all other threads which are being run from the same class to stop?

3. To use it to synchronize, to make it to be part of the code, its source in the code, can only create one thread?

4. If I run a thread in Java through Run (), then I call any method from within the run (), it is still running as a thread or it is not allowed?

If I have a class that runs multiple threads, when one thread is out (1) Command Line Exit the entire application including this thread or other threads?

Calling thread to system.ext (1) and All other threads This is the most cruel way to eliminate a Java program That is, completely shutting down JVM, and seldom should be used in all.

How can I make a thread to notify all other threads that are being run from the same class to stop?

Of course if you have references to other threads objects, then you can call thread # interrupt () But other threads can check their interrupted status or reach at a place where they can take the interrupted steps they are left.

To synchronize this part of the code, to use only one thread, regardless of its source in the code,

However, When the wait () in this block, the related lock (that is, the synchronized object) will be released and it can be obtained other threads < / P>

If I run a thread in Java using Run (), then I run () Area I call a method in what it is not is still running as a thread or permission?

When a thread calls a method, then the same thread runs this method (quietly thinking how it should be and how to ...)


Comments

Post a Comment

Popular posts from this blog

import - Python ImportError: No module named wmi -

-
I followed the instructions for downloading WMI for Python When I try to run the code for C.Win32_Service (StartMode = "Auto", state = "Stopped") import wmi c = wmi.WMI (): if Raw_input ("restart% s?"% S.Caption) .upper () == "Y": s.StartService () I got the error < Code> traceback (most recent call end): file ". \", Line 1, edit: I am using Python 2.7.6 EDIT2: I am running 64-bit Windows 2008 R2, and I've downloaded WMI-1.4.9.zip (md5). I removed the content and put it in D: Python \ Tools \ Scripts I executed dragon setup.py.install I said D : \ Python \ tools \ scripts to% PATH% and when I execute the code for C.Win32_Service (StartMode = "Auto", state = "Stopped") import wmi c = Wmi.WMI (): If raw_input ("Restart% s?"% S. Caption). () == "Y": s.StartService () error me Gets traceback (most recent call final): File ". See \", line 1, &
Read more

Editing Python Class in Shell and SQLAlchemy -

-
I am working on the terminal on a shell script after this tutorial SQLAlchemy tutorial. I need to type gt; & Gt; & Gt; Sqlalchemy import column, integer, string & gt; & Gt; & Gt; Class user (base): __tablename__ = 'users' id = column (integer, primary_key = true) name = column (string) absolute name = column (string) password = column (string) def __repr __ (self): return "& lt ; User (name = '% s', absolute name = '% s', password = '% s') & gt; "% (Self.name, self.fullname, self.password) After the problem I have typed the password = column (string) I hit twice and changed .... >> I then took everything back but then an error was thrown because the class already exists ... I am not completely sure how to fix it. How do I open that slip in the shell script and edit it (Add DF to DRR) The error thrown below: / user / giripeters / TFSQLLX / Lib / python2.7 / site-packages / sqlalchemy / ext / decla
Read more

c# - MySQL Parameterized Select Query joining tables issue -

-
I am using parameterized select questions in conjunction with my program and it works entirely, When I try to join the table Everything I have done is a small fraction: using (MySqlCommand cmd = new MySqlCommand (paramQuery) ToSql (), Connection)) /etc/ paramQuery.ToSql () Equal: "Select TableOne ID, Tableon, Department, Tablet. One by name table, Table 2 h Yes TableOnEID = @Pharmak "* / for (Int Index = 0; Index and Lt; ParamariX Parameter (.c calculation; Index ++) Cmd.Parameters.AddWithValue (paramQuery.Parameters (). ElementAt (index). , ParamQuery.Parameters (). ElementAt (index) .Value); / * ParamQuery.Parameters (). ElementAt (index) .k = "@most 0" paramQuery.Parameters (). ElementAt (index) .Value = "tableTwo.ID" * / MySqlDataReader Reader = cmd.ExecuteReader (); While (reader.Read ()) {// do stuff} } One of the tables I attempt to join is For the table, two with the same id for all. Is there something that I'm doing wrong?
Read more