java - how to get the object inside an object? -

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i trying use thread can tell me wrong in following code. getting nullpointerexception in main.

 public class threadtest implements runnable {     thread t;     public threadtest(string name) {      thread t = new thread(name);    }     public void run() {      for(int = 0; <= 10; i++) {        try {          thread.sleep(1000);        }        catch(exception e) {          system.out.println(e);        }      }    }    public static void main(string args[]) {    threadtest ob = new threadtest("satheesh");    ob.t.start();   } }

in constructor declare local variable called t uses same name field t. replace thread t this.t or simple t there:

public threadtest(string name) {   this.t=new thread(name); }

btw1, it's highly recommended start class names capital letters, i.e. threadtest in case better name.

btw2, decent ide spot mistake , drew attention this.


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