Thread start()和runnable run()之间有什么区别?
class R1 implements Runnable {
public void run() { … }
…}class R2 implements Runnable {
public void run() { … }
…}public static void main() {
R1 r1 = new R1();
R2 r2 = new R2();
r1.run();
r2.run();}public static void main() {
R1 r1 = new R1();
R2 r2 = new R2();
Thread t1 = new Thread(r1);
Thread t2 = new Thread(r2);
t1.start();
t2.start();}
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