Overview

This PR improves the build scripts and demo integration in JLine by:

• Merging the build and build.config files into a single build script
• Creating a Windows equivalent build.bat script
• Adding automatic detection and inclusion of the --enable-native-access=ALL-UNNAMED flag for JDK 16+
• Moving the BasicDynamic demo from console-ui to the demo directory
• Integrating the ConsoleUI demo into the build demo command
• Removing old shell scripts in the demo/ and console-ui/ directories
• Standardizing demo execution through the build script

Changes

Build Script Improvements

• Consolidated all command functions into a single build script
• Removed the need for the separate build.config file
• Updated the usage information to include all available commands
• Created a Windows equivalent batch script (build.bat)

Demo Integration

• Added consoleui demo type to the build demo command
• Moved BasicDynamic.java from console-ui to demo/src/main/java/org/jline/demo/consoleui/
• Removed the console-ui scripts (jline-console-ui.sh and jline-console-ui.bat)
• Removed the old demo scripts (jline-common.sh, jline-gogo.sh, etc.)

JDK Support

• Added automatic detection of JDK version to conditionally add --enable-native-access=ALL-UNNAMED flag when running on JDK 16+
• Maintained compatibility with older JDK versions

Testing

All demos have been tested and work correctly:

• ./build demo gogo
• ./build demo repl
• ./build demo password
• ./build demo consoleui

The Windows batch script has been implemented with the same functionality as the Unix script.

Benefits

• Simplified build and demo execution
• Improved cross-platform support
• Reduced duplication and maintenance overhead
• Better organization of demo code
• Automatic JDK feature detection