JUC 笔记-创建线程#

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package demo;
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public class Demo1 {
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    public static void main(String[] args) {
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        Demo1Thread demo1Thread = new Demo1Thread();
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        demo1Thread.start();
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    }
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}
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class Demo1Thread extends Thread {
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    @Override
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    public void run() {
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        System.out.println(Thread.currentThread().getName());
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    }
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}

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package demo;
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public class Demo1 {
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    public static void main(String[] args) {
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        new Thread(new Demo1Thread()).start();
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    }
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}
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class Demo1Thread implements Runnable {
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    @Override
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    public void run() {
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        System.out.println(Thread.currentThread().getName());
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    }
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}

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package demo;
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import java.util.concurrent.Callable;
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import java.util.concurrent.ExecutionException;
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import java.util.concurrent.FutureTask;
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public class Demo1 {
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    public static void main(String[] args) {
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        Callable callable = new Demo1Thread(3,10);
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        FutureTask<Integer> futureTask = new FutureTask(callable);
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        Thread t = new Thread(futureTask);
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        t.start();
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        try {
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            Integer i = futureTask.get();
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            System.out.println("result: " + i);
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        } catch (InterruptedException e) {
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            throw new RuntimeException(e);
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        } catch (ExecutionException e) {
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            throw new RuntimeException(e);
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        }
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    }
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}
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class Demo1Thread implements Callable<Integer> {
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    private int a;
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    private int b;
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    public Demo1Thread(int a,int b) {
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        this.a = a;
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        this.b = b;
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    }
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    public int getA() {
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        return a;
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    }
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    public int getB() {
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        return b;
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    }
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    public void setA(int a) {
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        this.a = a;
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    }
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    public void setB(int b) {
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        this.b = b;
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    }
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    @Override
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    public Integer call() throws Exception {
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        Thread.sleep(1000);
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        return a + b;
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    }
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}