Java API 1.7 CHM哪里下载？-杰瑞科技汇

Of course. Here is a detailed guide to finding and using the Java API documentation (CHM) for version 1.7.

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Summary

The official Java SE 7 API documentation from Oracle is not available in the CHM (Compiled HTML Help) format. Oracle switched to providing documentation primarily as a ZIP file containing a large number of individual HTML pages, which is best viewed with a web browser.

However, you can easily find and download a community-created CHM version that is very popular and widely used. Here’s how to get it and why the official format is better.

Option 1: Download the Community CHM Version (Easiest)

This is the most direct way to get a single, searchable CHM file for Java 7.

Download Link: You can find the Java 7 CHM file on popular developer resource sites. A reliable source is the javadoc directory on GitHub.
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- Direct Download Link: Java 7 API Documentation (CHM)
How to Use It:
- Download the javadoc-7u80-chm.zip file (or similar name).
- Extract the ZIP file. You will find a file named Java 7 API.chm.
- Double-click the .chm file. It will open in the Windows Help Viewer.
Important Note on CHM Files:
- Security Warning: Some versions of Windows may show a security warning when you first open a CHM file. You might need to click "Unblock" in the file properties to allow it to display content correctly.
- Search Function: The CHM format has an excellent built-in search feature (the "Index" tab), making it very fast to look up classes and methods.

Option 2: Download the Official ZIP File (Recommended)

This is the format provided by Oracle and is generally considered superior because it includes all the features of the official documentation website.

Download Link: Go to the official Oracle Archive for Java SE 7.
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- Official Archive Page: Oracle Java Archive: Java SE 7
- On that page, find the link for "JDK 7u80 with JavaFX" or a similar version. You don't need to install the JDK, just download it to get the documentation.
- The download link for the documentation bundle is usually separate. Look for a link like:
  
  "Java SE Development Kit 7 Documentation" This will download a file named jdk-7u80-docs.zip.
How to Use It:
- Download the jdk-7u80-docs.zip file.
- Extract the ZIP file to a location of your choice (e.g., C:\JavaDocs\Java7).
- Navigate into the extracted folder and open the index.html file with your favorite web browser (like Chrome, Firefox, or Edge).
Advantages of the Official ZIP Format:
- Complete and Accurate: This is the exact documentation as published by Oracle.
- Full Features: It includes the full text search, "All Classes" index, and the ability to navigate between related classes and methods just like the online version.
- No Security Warnings: You avoid the potential security hassles of CHM files.
- Offline Access: Once extracted, you have a complete, offline copy of the entire API.

Comparison: CHM vs. Official ZIP

Feature	Community CHM File	Official ZIP File
Source	Community-created	Oracle (Official)
Format	Single compiled file (.chm)	Collection of HTML files (.zip)
Access	Windows Help Viewer	Web Browser (Chrome, Firefox, etc.)
Search	Excellent built-in index	Full-text search, very powerful
Navigation	Good, but can be limited	Excellent, mirrors the website
Reliability	May have minor errors or omissions	100% accurate and complete
Security	Can trigger Windows security warnings	No security issues

Recommendation

For most users, downloading the official ZIP file (Option 2) is the best choice. It is more reliable, more powerful, and avoids the potential issues associated with CHM files. The process of extracting and opening index.html is a simple one-time task.

If you absolutely must have a single CHM file for its convenience, then Option 1 will provide you with a functional and widely-used version. Just be aware that it's a third-party compilation.