schedular.java

来自「有关java的源程序,为讲授java程序设计课程使用」· Java 代码 · 共 41 行

import java.awt.*;
import java.applet.*;
import java.util.*;
public class Schedular extends Applet
{
  TextArea info;
  public void init()
  {
     info=new TextArea(6,20);
     info.setEditable(false);
     add(new Label("Schedulaar"));	
     add(info);
     validate();	
  }
 public void startCar()
 {
	boolean find=false;
        Applet car=null;
        Enumeration cars=getAppletContext().getApplets();
        while(! find && cars.hasMoreElements())
	{
		car=(Applet)cars.nextElement();
		if(car instanceof Car)
		   find=((Car)car).isIdel();			
	}
        if(find)
        {
	  ((Car)car).setOff(this);
          info.appendText(((Car)car).getName()+" sets off\n");
	}
	else
	{
	  info.appendText("no car can set off now\n");
	}
 }
 public void returnCar(String name)
 {
      info.appendText(name+" return \n");
 }	
}