YouTipThread Id
# Java Example - Getting Thread ID
[ Java Example](#)
The following example demonstrates how to use the getThreadId() method to get the thread ID:
## Main.java File
public class Main extends Object implements Runnable{private ThreadID var; public Main(ThreadID v){this.var = v; }public void run(){try{print("var getThreadID =" + var.getThreadID()); Thread.sleep(2000); print("var getThreadID =" + var.getThreadID()); }catch(InterruptedException x){}}private static void print(String msg){String name = Thread.currentThread().getName(); System.out.println(name + ": " + msg); }public static void main(String[]args){ThreadID tid = new ThreadID(); Main shared = new Main(tid); try{Thread threadA = new Thread(shared, "threadA"); threadA.start(); Thread.sleep(500); Thread threadB = new Thread(shared, "threadB"); threadB.start(); Thread.sleep(500); Thread threadC = new Thread(shared, "threadC"); threadC.start(); }catch(InterruptedException x){}}}class ThreadID extends ThreadLocal{private int nextID; public ThreadID(){nextID = 10001; }private synchronized Integer getNewID(){Integer id = new Integer(nextID); nextID++; return id; }protected Object initialValue(){print("in initialValue()"); return getNewID(); }public int getThreadID(){Integer id = (Integer)get(); return id.intValue(); }private static void print(String msg){String name = Thread.currentThread().getName(); System.out.println(name + ": " + msg); }}
The output of the above code is:
threadA: in initialValue() threadA: var getThreadID =10001 threadB: in initialValue() threadB: var getThreadID =10002 threadC: in initialValue() threadC: var getThreadID =10003 threadA: var getThreadID =10001 threadB: var getThreadID =10002 threadC: var getThreadID =10003
[ Java Example](#)