Conundrum with Constructors.. Explain.
/***********************************************************
Can anybody explain why this simple program throws a
System.StackOverflowException at runtime. The class has four constructors.
An instance is constructed with all four constructors.
A public method is then called to display each of these instances.
***********************************************************/
using System;
namespace test
{
///
/// Summary description for Class1.
///
using System;
public class Test
{
private int x;
private int y;
private string instance_name;
public Test()
{
Console.WriteLine("{0}:CTOR0",this.instance_name);
this.x=0;
this.y=0;
this.instance_name="Anonymous";
}
public Test(int x, int y):this("None")
{
Console.WriteLine("{0}:CTOR2",this.instance_name);
}
public Test(string instance_name):this(1,1)
{
this.instance_name = instance_name;
}
public Test(int x, int y,string instance_name)
{
Console.WriteLine("{0}:CTOR1",this.instance_name);
this.x=x;
this.y=y;
this.instance_name = instance_name;
}
~Test()
{
Console.WriteLine("{0}:DTOR0",this.instance_name);
}
public void Dump()
{
Console.WriteLine("{0}:({1},{2})",this.instance_name,this.x,this.y);
}
public static void Main()
{
Test t1 = new Test();
Test t2 = new Test(10,10,"TopLeft");
Test t3 = new Test(11,11);
Test t4 = new Test("Ambiguous");
t1.Dump();
t2.Dump();
t3.Dump();
t4.Dump();
}
}
}
sailorfoleyPosted Jun 3, 2004, 4:23 AM