Advice needed on planning for new programs

Question

So my question is again, requesting advice from more seasoned & experienced programmers. I need help on creating a design process for myself when designing a new program.
I've done some googling, but most diagram's represent the design process of software for a company. I need to scale down a bit to more of an individual level. I have some ideas in mind for what I should consider, but I'm not sure. Sometimes I find the planning process to be the most difficult as I might not anticipate something while coding. Here are stages I figured would be a good design process:
>Stage 1: Planning
>Stage 2: Design
>Stage 3: Code
>Stage 4: Testing
What questions should I be asking myself for each step?
Am I missing a step?
Are there things to consider for each step?
In what order should some things be done in, for example test cases (black/white box testing)?

Answer 1

this process depends on each programmer. I know developer who write the source code directly. Also depends on the language that will do the project, for example, if it is Java I advise you to take a look here: https://en.m.wikipedia.org/wiki/Object-oriented_analysis_and_design