JDK-8159855 : Create an SPI for tools
  • Type: Enhancement
  • Component: core-libs
  • Sub-Component: java.util
  • Affected Version: 9
  • Priority: P3
  • Status: Closed
  • Resolution: Fixed
  • Submitted: 2016-06-17
  • Updated: 2017-05-17
  • Resolved: 2016-10-07
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JDK 9
9 b140Fixed
Related Reports
Blocks :  
JDK-8169821 - jshell tool: jshell missing from SPI for tools
Duplicate :  
JDK-8138586 - Provide a unified programmatic way to invoke JDK tools
Relates :  
JDK-8164689 - Retrofit jar, jlink, jmod as a ToolProvider
Relates :  
JDK-8170251 - Add javax.tools.Tool.name()
Relates :  
JDK-8162359 - javac should use stdout for --help and --version
Description
It would be good to create an SPI for simple command line tools, for simple use of JDK tools and others.

Proposed package java.util.spi
Following the existing naming convention the proposed name is ToolProvider

API should include the following methods:
    String getName();
    int run(PrintWriter pw, String... args)

Possible additional methods
    default int run(PrintStream ps, String... args) // creates a PrintWriter and calls other method

    static ToolProvider lookup(String name) // use ServiceLoader to locate first instance of named service
Comments
Webrev: http://cr.openjdk.java.net/~jjg/8159855/webrev.03/
04-10-2016
Yes, maybe next week.
30-09-2016
Jon - is this planned for JDK 9?
30-09-2016