I haven’t known any bug-free software yet. The only one I think of is “Hello World” program which is too simple to have a bug and it’s actually not useful software. So, the short answer is No, there’s no such application without a bug.
Now, Even though we can’t have a bug-free application, it’s not impossible to reduce the number of defects in the system and mitigate the risks to impact the end-users (to some extent, it’s the ultimate goal of testing). You can achieve this by doing testing sooner and more frequently.
@Lan,
I haven’t known any bug-free software yet. The only one I think of is “Hello World” program which is too simple to have a bug and it’s actually not useful software. So, the short answer is No, there’s no such application without a bug.
Now, Even though we can’t have a bug-free application, it’s not impossible to reduce the number of defects in the system and mitigate the risks to impact the end-users (to some extent, it’s the ultimate goal of testing). You can achieve this by doing testing sooner and more frequently.
Hope it answer your question!