import java.util.Date;
class st{
	public static void main(String args[]){
		// Test the + operator. We know this one is bad.
		// Its good to know its still bad in Java6
		long t = new Date().getTime();
		String x="";
		for(int i=0;i<100000;i++)
			x = x + " ";
		long e = new Date().getTime();
		System.out.println("Time to use the + operations on a string: " + (e-t));
 
		// Test the String.concat method. 
		// Is it any faster?
		t=new Date().getTime();
		x="";
		for(int i=0;i<100000;i++)
			x = x.concat(" ");
		e=new Date().getTime();
		System.out.println("Time to use the concat method on a string: " + (e-t));
 
		// Finaly out baseline. We know StringBuilder is(was)
		// the fastest way to build Strings.
		t=new Date().getTime();
		StringBuilder sb = new StringBuilder();
		for(int i=0;i<100000;i++)
			sb.append(" ");
		String xx=sb.toString();
		e=new Date().getTime();
		System.out.println("Time to use a StringBuilder object: " + (e-t));
	}
}