json-iterator/java
Java
This library is a high-performance JSON processing tool for Java designed to handle data serialization and deserialization with minimal resource consumption. It provides a framework for transforming complex object graphs into JSON strings and mapping raw input directly to typed class properties.
The library distinguishes itself by utilizing compile-time code generation and reflection-free mapping to eliminate expensive runtime overhead. By employing iterator-based stream parsing and zero-allocation buffer management, it processes large or deeply nested data structures while reducing garbage collection pressure. It also supports dynamic type inference, allowing for the extraction of specific values from nested JSON without requiring the definition of formal schema classes.
Beyond its core parsing capabilities, the library offers extensive configuration options for custom serialization logic to accommodate non-standard data formats. It includes compatibility mechanisms that allow it to serve as a drop-in replacement for standard JSON functions, facilitating integration into existing application codebases.
Features
- High-Performance Parsers - Provides a memory-efficient utility designed to reduce processing time when handling large or deeply nested JSON structures.
- JSON Serialization Libraries - Converts raw JSON strings into structured objects using efficient parsing techniques that ensure data integrity.
- JSON Processing - Converts raw JSON strings into structured Java objects using efficient parsing techniques that maximize execution speed.
- Class-to-Serializer Registries - Acts as a flexible framework for transforming complex object graphs into JSON strings and mapping raw input to typed properties.
- JSON Serialization Libraries - Offers a high-performance library for serializing and deserializing JSON data in Java with support for custom mapping.
- JSON Stream Parsers - Processes JSON input as a continuous stream of tokens to minimize memory allocation and avoid loading entire documents into memory.
- Compile-Time Code Generation - Uses annotation processing to generate optimized serialization logic at build time, eliminating expensive runtime reflection.
- Reflection-Free Serialization - Bypasses standard reflection by invoking pre-compiled code paths to map JSON fields directly to object properties at high speed.
- Graph Serializers - Transforms complex object structures into standard JSON strings by traversing the entire data hierarchy.
- JSON Data Extraction - Enables the retrieval of specific data points from deeply nested JSON structures using a simple interface.
- Marshaling Code Generators - Generates optimized code during the build process to reduce runtime processing requirements and improve execution speed.
- Runtime Type Inference - Supports dynamic type inference for flexible access to nested JSON values without requiring formal schema classes.
- Buffer-Reusing Serializers - Reuses internal memory buffers during the parsing process to reduce garbage collection pressure and improve performance.
Star history
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