两个线程线程交替打印的几种方式两个线程线程交替打印的几种

1.两个线程交替打印大小写字母“AaBbCc.....Zz”

public class RunTest { public static void main(String[] args) { Myprint mp = new Myprint(); new Capital(mp).start(); new Lowercase(mp).start(); } } class Myprint { boolean flag = true; int i = 0; int j = 0; public void Da() { while (i < 26) { if (flag) { System.out.print((char) ('A' + i)); i++; this.flag = false; } } } public void Xiao() { while (j < 26) { if (!flag) { System.out.print((char) ('a' + j)); j++; this.flag = true; } } } } class Capital extends Thread { Myprint my = null; public Capital(Myprint my) { this.my = my; } @Override public void run() { my.Da(); //打印大写 } } class Lowercase extends Thread { Myprint my = null; public Lowercase(Myprint my) { this.my = my; } @Override public void run() { my.Xiao(); //打印小写 } }

【两个线程线程交替打印的几种方式】2.两个线程交替打印数字和字母“1A2B3C......26Z”

public class PrintLetter { private static Object lock = new Object(); private static Thread th1 = new Thread() { @Override public void run() { synchronized (lock) { for (int i = 1; i <= 26; i++) { System.out.println(i); lock.notify(); try { Thread.sleep(1000); lock.wait(); } catch (Exception e) { e.printStackTrace(); } } } } }; private static Thread th2 = new Thread() { @Override public void run() { synchronized (lock) { for (int i = 1; i <= 26; i++) { System.out.println((char) (i + 64)); lock.notify(); try { Thread.sleep(1000); lock.wait(); } catch (Exception e) { e.printStackTrace(); } } } } }; public static void main(String[] args) { th1.start(); th2.start(); } }

3.两个线程交替打印26个小写字母“abcd......z”

public class Print_letter implements Runnable{ char ch = 97; @Override public void run() { while (true){ synchronized (this){ notify(); try { Thread.currentThread().sleep(1000); }catch (InterruptedException e){ e.printStackTrace(); }if (ch < 123){ System.out.println(Thread.currentThread().getName() + " " + ch); ch++; try { wait(); }catch (InterruptedException e){ e.printStackTrace(); } } } } }public static void main(String[] args) { Print_letter t = new Print_letter(); Thread t1 = new Thread(t); Thread t2 = new Thread(t); t1.start(); t2.start(); } }