How to start anonymous thread class

Question

I have the following code snippet   public class A       public static void main String   arg            new Thread                 public void run                     System out println  blah                                       Here  how do I call the start   method for the thread without creating an instance of the thread class

User · Answer

Just call start    new Thread         public void run             System out println  blah            start

User · Answer

Add  now you can use lambda to simplify your syntax  Requirement  Java 8   public class A       public static void main String   arg                Thread th   new Thread    - gt   System out println  blah               th start

User · Answer

I m surprised that I didn t see any mention of Java s Executor framework for this question s answers  One of the main selling points of the Executor framework is so that you don t have do deal with low level threads  Instead  you re dealing with the higher level of abstraction of ExecutorServices  So  instead of manually starting a thread  just execute the executor that wraps a Runnable  Using the single thread executor  the Runnable instance you create will internally be wrapped and executed as a thread   import java util concurrent ExecutorService  import java util concurrent Executors          ExecutorService threadExecutor   Executors newSingleThreadExecutor    try     threadExecutor execute      new Runnable            Override       public void run             System out println  blah                         finally       threadExecutor shutdownNow        For convenience  see the code on JDoodle

User · Answer

Leaving this here for future reference  but its an answer too    new Thread    -  whatever    start

User · Answer

Not exactly sure this is what you are asking but you can do something like   new Thread         public void run             System out println  blah            start      Notice the start   method at the end of the anonymous class   You create the thread object but you need to start it to actually get another running thread   Better than creating an anonymous Thread class is to create an anonymous Runnable class   new Thread new Runnable         public void run             System out println  blah             start      Instead overriding the run   method in the Thread you inject a target Runnable to be run by the new thread   This is a better pattern

User · Answer

Since anonymous classes extend the given class you can store them in a variable   eg   Thread t   new Thread         public void run             System out println  blah             t start      Alternatively  you can just call the start method on the object you have immediately created   new Thread         public void run             System out println  blah            start       similar to new Thread   start      Though personally  I would always advise creating an anonymous instance of Runnable rather than Thread as the compiler will warn you if you accidentally get the method signature wrong  for an anonymous class it will warn you anyway I think  as anonymous classes can t define new non-private methods    eg  new Thread new Runnable          Override     public void run             System out println  blah             start

User · Answer

You re already creating an instance of the Thread class - you re just not doing anything with it  You could call start   without even using a local variable   new Thread         public void run             System out println  blah            start          but personally I d normally assign it to a local variable  do anything else you want  e g  setting the name etc  and then start it   Thread t   new Thread         public void run             System out println  blah             t start

User · Answer

The entire new expression is an object reference  so methods can be invoked on it   public class A       public static void main String   arg                new Thread                         public void run                     System out println  blah                            start

[java] How to start anonymous thread class

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