My research explores the use of Large Language Models (LLMs) for programming language tasks, particularly focusing on code translation, generation, and verification. Recent projects include using instruction-tuned models like ChatGPT as effective Java decompilers, producing more readable source code compared to traditional software-based approaches, and developing robust strategies to detect malicious or incorrect code through cross-model validation. By combining model-based methods with multi-model consensus, this work aims to enhance both the quality and security of AI-generated code.