package action;
class Tmp
{
boolean b;
public boolean isB() {
return b;
}
public void setB(boolean b) {
this.b = b;
}}
class Alpha implements Runnable
{
Tmp o;
public Alpha(Tmp o)
{
this.o=o;
}
@Override
public void run() {
for(int i='A';i<='Z';i++)
{
try {
synchronized(o)
{
while(o.b==false)
{
try {
o.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
System.out.println((char)i);
o.b=false;
o.notify();
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
class Num implements Runnable
{
Tmp o;
public Num(Tmp o)
{
this.o=o;
}
@Override
public void run() {
for(int i=1;i<=26;i++)
{
try {
synchronized(o)
{
while(o.b==true)
{
try {
o.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
System.out.println(i);
o.b=true;
o.notify();
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
public class Test01 {
static Tmp o=new Tmp();
public static void main(String[] args) throws InterruptedException {
Thread t1=new Thread(new Alpha(o),"t1");
Thread t2=new Thread(new Num(o),"t2");
t1.start();
t2.start();
t1.join();
t2.join();
System.out.println("All over.");
}}
