import java.io.*;
// javac HelloObject3.java
public class HelloObject3 {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
	System.out.println("Hello Wrold");
	StringTester st1 = new StringTester();
	StringTester st2 = new StringTester("John Doe");
	if(st1.getClass() == StringTester.class)
		{
		System.out.println("loaded a blank string");
		}
	if(st2.getClass() == StringTester.class)
		{
		System.out.println("loaded a valid string" + StringTester.class);
		}
	}
}
class StringTester
{
	private String strType;
	// string constructor
	public StringTester ()
	{ System.out.println("This is a blank constructor");}
	public StringTester (String str1)
	{
		System.out.println("This is a string constructor");
		strType = str1;

	}
	// toString()
	public String testString()
	{
		return ("bla bla bal "+ strType);
	}

}