Java website screenshot

Java

Java is a high-level, class-based, object-oriented programming language developed by Sun Microsystems and now stewarded by Oracle. The Java Standard Edition (SE) platform provides a comprehensive set of APIs and class libraries for building cross-platform applications. Key APIs include Collections, Concurrency, I/O, NIO, Networking, JDBC, Reflection, and Streams. Java is the foundation for the Jakarta EE enterprise platform and is supported by an extensive ecosystem of open source projects, frameworks, and runtimes.

Java publishes 9 APIs on the APIs.io network. Tagged areas include Enterprise, Java, JVM, Object-Oriented, and Oracle.

Java’s developer surface includes documentation, getting-started guide, support, and 5 more developer resources.

🌐 Visit website 📡 Source on GitHub
17.4/100 emerging ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0
AccessFreemium
9 APIs
EnterpriseJavaJVMObject-OrientedOracleProgramming Language

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0
Composite quality — 17.4/100 · emerging
Contract Quality 0.0 / 25
Developer Ergonomics 4.3 / 20
Access Clarity 5.3 / 20
Operational Transparency 1.4 / 13
Contract Governance 0.0 / 12
Discoverability 6.5 / 10
Agent readiness — 3/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Delegated User Identity 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Surface 0 / 5
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/java: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 9

Individual APIs this provider publishes, each with its own machine-readable definition.

Java Core API

Core Java SE API including fundamental classes and utilities for building Java applications, including the java.lang, java.util, java.io, and other foundational packages.

Java Collections Framework

Interfaces and classes for storing and manipulating groups of objects including List, Set, Map, and Queue implementations.

Java I/O API

Input and output through data streams, serialization and the file system using the java.io package.

Java NIO API

Non-blocking I/O operations for buffers, channels, selectors, and asynchronous file system access.

Java Networking API

APIs for networking applications including HTTP, sockets, and URLs.

Java Concurrency API

Utilities for concurrent programming including executors, thread pools, locks, atomic variables, and concurrent collections.

Java Database Connectivity (JDBC)

API for connecting to relational databases and executing SQL queries from Java applications.

Java Reflection API

Examine and modify the runtime behavior of applications by inspecting classes, methods, fields, and annotations.

Java Stream API

Functional-style operations on streams of elements including map, filter, reduce, and collect operations.

Scroll for all 9

Pricing Plans 1

Published pricing tiers and plan structures.

Java Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Java Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Java Finops

FINOPS

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Java Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted
GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support
Support

Commercial 2

Pricing, plans, and the legal terms of use

License
License
 TermsOfService
TermsOfService

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: java
name: Java
description: Java is a high-level, class-based, object-oriented programming language developed by Sun Microsystems and now
  stewarded by Oracle. The Java Standard Edition (SE) platform provides a comprehensive set of APIs and class libraries for
  building cross-platform applications. Key APIs include Collections, Concurrency, I/O, NIO, Networking, JDBC, Reflection,
  and Streams. Java is the foundation for the Jakarta EE enterprise platform and is supported by an extensive ecosystem of
  open source projects, frameworks, and runtimes.
type: Index
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/java.png
tags:
- Enterprise
- Java
- JVM
- Object-Oriented
- Oracle
- Programming Language
url: https://raw.githubusercontent.com/api-evangelist/java/refs/heads/main/apis.yml
created: '2024-01-01'
modified: '2026-04-28'
specificationVersion: '0.23'
apis:
- aid: java:java-core-api
  name: Java Core API
  description: Core Java SE API including fundamental classes and utilities for building Java applications, including the
    java.lang, java.util, java.io, and other foundational packages.
  humanURL: https://docs.oracle.com/en/java/javase/
  tags:
  - Core
  - Java
  - Standard Library
  properties:
  - type: Documentation
    url: https://docs.oracle.com/en/java/javase/21/docs/api/java.base/module-summary.html
  - type: Specification
    url: https://docs.oracle.com/javase/specs/
- aid: java:java-collections-framework
  name: Java Collections Framework
  description: Interfaces and classes for storing and manipulating groups of objects including List, Set, Map, and Queue implementations.
  humanURL: https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/util/package-summary.html
  tags:
  - Collection
  - Data Structures
  - Utilities
  tags_raw:
  - Collections
  - Data Structures
  - Utilities
  properties:
  - type: Documentation
    url: https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/util/package-summary.html
  - type: Tutorial
    url: https://docs.oracle.com/javase/tutorial/collections/
- aid: java:java-io-api
  name: Java I/O API
  description: Input and output through data streams, serialization and the file system using the java.io package.
  humanURL: https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/io/package-summary.html
  tags:
  - File
  - IO
  - Streams
  tags_raw:
  - Files
  - I/O
  - Streams
  properties:
  - type: Documentation
    url: https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/io/package-summary.html
- aid: java:java-nio-api
  name: Java NIO API
  description: Non-blocking I/O operations for buffers, channels, selectors, and asynchronous file system access.
  humanURL: https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/nio/package-summary.html
  tags:
  - Async I/O
  - Buffers
  - NIO
  properties:
  - type: Documentation
    url: https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/nio/package-summary.html
- aid: java:java-networking-api
  name: Java Networking API
  description: APIs for networking applications including HTTP, sockets, and URLs.
  humanURL: https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/net/package-summary.html
  tags:
  - HTTP
  - Networking
  - Sockets
  properties:
  - type: Documentation
    url: https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/net/package-summary.html
  - type: Documentation
    url: https://docs.oracle.com/en/java/javase/21/docs/api/java.net.http/java/net/http/package-summary.html
- aid: java:java-concurrency-api
  name: Java Concurrency API
  description: Utilities for concurrent programming including executors, thread pools, locks, atomic variables, and concurrent
    collections.
  humanURL: https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/util/concurrent/package-summary.html
  tags:
  - Concurrency
  - Multithreading
  - Parallel
  properties:
  - type: Documentation
    url: https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/util/concurrent/package-summary.html
- aid: java:jdbc-api
  name: Java Database Connectivity (JDBC)
  description: API for connecting to relational databases and executing SQL queries from Java applications.
  humanURL: https://docs.oracle.com/en/java/javase/21/docs/api/java.sql/java/sql/package-summary.html
  tags:
  - Database
  - JDBC
  - SQL
  properties:
  - type: Documentation
    url: https://docs.oracle.com/en/java/javase/21/docs/api/java.sql/module-summary.html
  - type: Specification
    url: https://jcp.org/en/jsr/detail?id=221
- aid: java:java-reflection-api
  name: Java Reflection API
  description: Examine and modify the runtime behavior of applications by inspecting classes, methods, fields, and annotations.
  humanURL: https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/lang/reflect/package-summary.html
  tags:
  - Introspection
  - Metadata
  - Reflection
  properties:
  - type: Documentation
    url: https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/lang/reflect/package-summary.html
- aid: java:java-stream-api
  name: Java Stream API
  description: Functional-style operations on streams of elements including map, filter, reduce, and collect operations.
  humanURL: https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/util/stream/package-summary.html
  tags:
  - Functional
  - Lambda
  - Streams
  properties:
  - type: Documentation
    url: https://docs.oracle.com/en/java/javase/21/docs/api/java.base/java/util/stream/package-summary.html
  - type: Tutorial
    url: https://docs.oracle.com/javase/tutorial/collections/streams/
common:
- type: DomainSecurity
  url: security/java-domain-security.yml
- type: Website
  url: https://www.java.com/
- type: Documentation
  url: https://docs.oracle.com/en/java/javase/
- type: GettingStarted
  url: https://dev.java/learn/
- type: GitHubOrganization
  url: https://github.com/openjdk
- type: License
  url: https://www.oracle.com/downloads/licenses/javase-license1.html
- type: TermsOfService
  url: https://www.oracle.com/legal/terms.html
- type: Support
  url: https://www.oracle.com/java/technologies/javase/support-roadmap.html
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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