A TangoDancer has a name and may have a partner who is also a TangoDancer. If TangoDancer ‘A’ chooses TangoDancer ‘B’ to be a partner, the operation succeeds if neither ‘A’ nor ‘B’ already has a partner, and A is not B. Write the choosePartner method and additional methods as desired so that the following interactions work:

> TangoDancer rita = new TangoDancer(“senorita rita”);
> TangoDancer tony = new TangoDancer(“mr tony”);
> rita.getName()
“senorita rita”
> rita.hasAPartner()
false
> tony.hasAPartner()
false
> rita.choosePartner(tony)
true
> rita.hasAPartner()
true
> rita.getPartner().getName()
“mr tony”
> tony.hasAPartner()
true
> tony.getPartner().getName()
“senorita rita”
> tony.choosePartner(rita)
false
> TangoDancer elana = new TangoDancer(“ms elana”);
> elana.choosePartner(elana)
false

/* TangoDancer Class */
public class TangoDancer{

}

TangoDancer.java

/**
 * TangoDancer Class
 */

public class TangoDancer {
    private String name;
    private TangoDancer partner;

    public TangoDancer(String name){
    	this.name	= name;
    	partner		= null;
    }

    public String getName(){
    	return name;
    }

    public TangoDancer getPartner(){
    	return partner;
    }

    public boolean hasAPartner(){
    	return partner != null;
    }

    public boolean choosePartner(TangoDancer name){
    	if (name == this){
			return false;
		}
		if (partner != null){
			return false;
		}		
		if (name.hasAPartner()){
			return false;
		}
			partner = name;
			name.setPartner(this);
		return true;
    }

    public void setPartner(TangoDancer partner){
    	this.partner = partner;
    }

    public static void main(String[] args) {

    	TangoDancer rita = new TangoDancer("senorita rita");
    	TangoDancer tony = new TangoDancer("mr tony");

    	System.out.println(rita.getName());

    	System.out.println(rita.hasAPartner());

    	System.out.println(tony.hasAPartner());

    	System.out.println(rita.choosePartner(tony));

    	System.out.println(rita.hasAPartner());

    	System.out.println(rita.getPartner().getName());

    	System.out.println(tony.hasAPartner());

    	System.out.println(tony.getPartner().getName());

    	System.out.println(tony.choosePartner(rita));

    	TangoDancer elana = new TangoDancer("ms elana");

    	System.out.println(elana.choosePartner(elana));

    }
}