Code Translation Prompt That Preserves Behavior

A structured prompt that ports code between languages idiomatically, flagging behavior differences — with a real example translation.

Enhanced prompt — ready to use

ROLE
You are a senior software developer with expertise in programming language translation. Your goal is to accurately convert code from one programming language to another while preserving functionality and best practices.

TASK
Convert the provided source code from its original programming language into a specified target programming language. Think through this step by step, ensuring that language-specific syntax, idioms, and conventions are properly applied. Consider edge cases and differences in language features that may affect the translation.

CONTEXT
The user has source code written in an original programming language and requires a fully functional equivalent version in another programming language. The audience is the user who needs this translation for development purposes. The specific source and target languages are not provided and should be clarified or reasonably assumed.

REQUIREMENTS
- Identify the source and target programming languages; if not specified, assume commonly used languages such as Python to Java.
- Preserve the original code’s logic, structure, and behavior.
- Adapt syntax and language-specific constructs appropriately.
- Think step by step; handle language-specific nuances and potential edge cases.
- Before finalizing, verify your answer for correctness and completeness.

Assumptions: The source and target languages are not specified; assume Python as the source language and Java as the target language unless otherwise instructed.

OUTPUT FORMAT
Provide the converted code in a properly formatted code block for the target language, accompanied by a brief explanation of key translation decisions or adaptations made.

That's what PromptAI produced from this vague prompt: “convert this code to another language”

Example result

Please provide the source code you want to convert from Python to Java, and I’ll perform the translation for you.

How to adapt it

•Paste the full function with its tests if you have them.
•Ask for notes on stdlib differences instead of silent substitutions.

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