calculatespeed.java

Typing fingers Typing programme

	/** This class calculates the Raw Speed,Adjusted Speed, Accuracy and Number of Words Typed.
	*   It requires a string to compute the accuray,speed etc.
	*   Its update method is called by a thread to update values timely.
	*/
class CalculateSpeed{
	private double speed,start,elapsed,minutes;
	private boolean flag=true,stopflag;
	private long words;
	private String user="",actual;
	private DialogLabel status;
	CalculateSpeed(String actual,DialogLabel status){
		this.actual=actual;
		this.status=status;
	}
	public void startLesson(){
		if(flag)
			start=System.currentTimeMillis();
		flag=false;
	}
	public void update(char ch){
		if(ch==' '||ch==10)
			words++;
		else if(ch==8){
			if(user.length()>0)
				user=user.substring(0,user.length()-1);
			return ;
		}
		user=user+ch;
		update();
	}
	public void update(){
		elapsed=System.currentTimeMillis()-start;	
		minutes=elapsed/60000;
		if(minutes>0)
			speed=words/minutes;
		if(!status.getText().equals("Press Enter"))
			status.setText("Speed="+getRawSpeed()+" WPM");
	}
	public long getRawSpeed(){
		return Math.round(speed);
	}
	public long getAdjustedSpeed(){
		long total=user.length();
		if(total==0)	return 0;
		long accuracy=getAccuracy();
		long correct=Math.round(total*accuracy/100);
		return Math.round(getRawSpeed()*correct/total);
	}
	public long getAccuracy(){
		long correct=0;
		long total=user.length();
		if(total==0) return 0;
		for(int i=0;i<total;i++)
			if(actual.charAt(i)==user.charAt(i))
				correct++;
		return Math.round(100*correct/total);
	}
	public long getWords(){
		return words;
	}
	public long getTime(){
		return (long)elapsed;
	}
}