Codul sursă al aplicației
import java.applet.*;
import java.io.*;
import java.awt.*;
import java.lang.Math;
import java.util.Random;
/*
Clasa Machine implementează comportamentul
dorit de programator pentru un Thread
*/
class Machine extends Thread{
protected int initial_value;
protected int counter=0;
protected int x_draw; //coordonatele de unde se începe
protected int y_draw; // scrierea textului
public Machine(int i, int x, int y){
initial_value=i;
x_draw=x;
y_draw=y;
}
public void run(){
while(true){
try {Thread.sleep(150);}
catch(InterruptedException e){
System.out.println("There is an Interrupt
edException");
}
counter=(initial_value++)%10;
}
}
}
public class game extends Applet implements Runnable{
protected Machine first_machine;
protected Machine second_machine;
protected Machine third_machine;
Thread engine=null;
protected Random r =new Random();
Button first_button = new Button("first");
Button second_button = new Button("second");
Button third_button = new Button("third");
public void init(){
resize(400,100);
add(first_button);
add(second_button);
add(third_button);
// generarea valorilor inițiale de start pentru counter
int i1=Math.abs(r.nextInt()%10);
int i2=Math.abs(r.nextInt()%10);
int i3=Math.abs(r.nextInt()%10);
first_machine=new Machine(i1, 140,50);
second_machine=new Machine(i2,190,50);
third_machine=new Machine(i3,244,50);
}
public boolean action(Event e, Object o){
if(e.target instanceof Button){
if("first".equals((String)o)) {
first_machine.stop();
return true;
}
if( "second".equals((String)o)) {
second_machine.stop();
return true;
}
if("third".equals((String)o)) {
third_machine.stop();
return true;
}
}
return false;
}
public void start(){
if (engine = = null){
engine=new Thread(this);
first_machine.start();
second_machine.start();
third_machine.start();
engine.start();
}
}
public void run(){
while ((first_machine.isAlive()) ||
(second_machine.isAlive()) ||
(third_machine.isAlive()))
{
try{Thread.sleep(150);}
catch(InterruptedException e){}
repaint();
}
}
public void paint(Graphics g){
g.drawString(String.valueOf(first_machine.counter),
first_machine.x_draw,first_machine.y_draw);
g.drawString(String.valueOf(second_machine.counter),
second_machine.x_draw,second_machine.y_draw);
g.drawString(String.valueOf(third_machine.counter),
third_machine.x_draw,third_machine.y_draw);
}
}
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