online java to cpp converter

The tool accepts Java source code and produces equivalent C++ code through an AST-focused translation pipeline. It targets developers porting legacy or performance-sensitive applications, teams migrating codebases, and educators illustrating language mappings. It preserves class names, method signatures, and basic structure to provide a compilable baseline while avoiding brittle regex-based rewrites. The output is suitable for further manual porting, refactoring, or automated build verification.
Core logic involves parsing Java into an Abstract Syntax Tree, building a symbol table, and applying deterministic mappings for types, control flow, and exception handling. It translates primitive types, arrays, and strings to their C++ equivalents; converts Java classes to C++ classes with constructors, destructors, and visibility; and maps try/catch to C++ exception handling scaffolding. Optional features include mapping common Java collections to STL containers, handling generics through templates, and translating streams and lambda expressions where feasible. It can annotate translated code with comments indicating assumptions and potential behavior changes, and it emits a diagnostic log that lists non-mappable constructs with concrete remediation suggestions. Outputs include a set of compilable C++ files and a diagnostic report. The tool supports batch translation, incremental porting workflows, and an option to target a specific C++ standard (e.g., C++17 or C++20). It aims to maximize preservation of semantics while signaling where manual porting is required.