Qual a explicação da execução do código abaixo?

[Otávio18]

public class MyClass
{
	public static int instanceCount = 0;
	public static void GetInstanceCount() {return instanceCount;}
	
	public final String name;
	public void GetName() {return name;}
	
	public MyClass(String name){
	    instanceCount++;
	    name = name;
	}
	
	
    public static void main (String[] args) {
	    MyClass x = new MyClass("X");
	    MyClass y = new MyClass("Y");
	    MyClass z = new MyClass("Z");
	    
	    println(x.GetName() + " : " + x.GetInstanceCountt());
	    println(y.GetName() + " : " + y.GetInstanceCountt());
	    println(z.GetName() + " : " + z.GetInstanceCountt());
	    
	    x.name = "ZZZ";
	    println(x.GetName() + " : " + x.GetInstanceCountt());
	}
}