ThreadLocal

class Bank {
    ThreadLocal<Integer> t = new ThreadLocal<Integer>() {
        @Override
        protected Integer initialValue() {
            return 100;

        }
    };

    public void set() {
        t.set(t.get() + 10);
    }

    public int get() {
        return t.get();
    }
}

class Transer implements Runnable {
    Bank bank;

    public Transer(Bank bank) {
        this.bank = bank;
    }

    @Override
    public void run() {
        for (int i = 0; i < 10; i++) {
            bank.set();
            System.out.println(Thread.currentThread() + "" + bank.get());
        }
    }

}

public class FF {

    public static void main(String[] args) throws Exception {
        Bank b = new Bank();
        Transer t = new Transer(b);
        Thread t1 = new Thread(t);
        t1.start();
        Thread t2 = new Thread(t);
        t2.start();
        // thread.Join把指定的线程加入到当前线程，可以将两个交替执行的线程合并为顺序执行的线程。
        t1.join();
        t2.join();
        System.out.println(b.get());
    }

}