Java: How to check if object is null?

Question

I am creating an application which retrieves images from the web. In case the image cannot be retrieved another local image should be used.

While trying to execute the f

Answer 1

Just to give some ideas to oracle Java source developer :-)

The solution already exists in .Net and is more very more readable !

In Visual Basic .Net

Drawable drawable 
    = If(Common.getDrawableFromUrl(this, product.getMapPath())
        ,getRandomDrawable()
        )

In C#

Drawable drawable 
    = Common.getDrawableFromUrl(this, product.getMapPath() 
        ?? getRandomDrawable();

These solutions are powerful as Optional Java solution (default string is only evaluated if original value is null) without using lambda expression, just in adding a new operator.

Just to see quickly the difference with Java solution, I have added the 2 Java solutions

Using Optional in Java

Drawable drawable = 
    Optional.ofNullable(Common.getDrawableFromUrl(this, product.getMapPath()))
        .orElseGet(() -> getRandomDrawable());

Using { } in Java

Drawable drawable = Common.getDrawableFromUrl(this, product.getMapPath());
if (drawable != null)
    {
    drawable = getRandomDrawable();
    }

Personally, I like VB.Net but I prefer ?? C# or if {} solution in Java ... and you ?