When I used to work in c++, I didn't use to throw exception in constructor because of memory leak problem it can lead to, I had learned it the hard way. Anyone working with c++ knows how difficult and problematic memory leak can be.

But if you are in c#/Java, then you don't have this problem, because garbage collector will collect the memory. If you are using C#, I think it is preferable to use property to make sure that data constraints are guaranteed.

public class MyClass
{
    private string _text;
    public string Text 
    {
        get
        {
            return _text;
        } 
        set
        {
            if (string.IsNullOrWhiteSpace(value))
                throw new ArgumentException("Text cannot be empty");
            _text = value;
        } 
    }

    public MyClass(string text)
    {
        Text = text;
        // continue with normal construction
    }
}

When I used to work in c++, I didn't use to throw exception in constructor because of memory leak problem it can lead to, I had learned it the hard way. Anyone working with c++ knows how difficult and problematic memory leak can be.

But if you are in c#/Java, then you don't have this problem, because garbage collector will collect the memory. If you are using C#, I think it is preferable to use property for nice and consistent way to make sure that data constraints are guaranteed.

public class MyClass
{
    private string _text;
    public string Text 
    {
        get
        {
            return _text;
        } 
        set
        {
            if (string.IsNullOrWhiteSpace(value))
                throw new ArgumentException("Text cannot be empty");
            _text = value;
        } 
    }

    public MyClass(string text)
    {
        Text = text;
        // continue with normal construction
    }
}