gistfile1.java

package my.example;

import java.util.Arrays;
import java.util.List;
import org.jruby.embed.AttributeName;
import org.jruby.embed.PathType;
import org.jruby.embed.ScriptingContainer;

public class Main {
    public static void main(String[] args) {
        ScriptingContainer container = new ScriptingContainer();
        container.getProvider().setLoadPaths(Arrays.asList("lib"));
        container.setAttribute(AttributeName.BASE_DIR, System.getProperty("user.dir"));

        container.runScriptlet(PathType.RELATIVE, "load_git.rb");
        //...
        List<GitDiff> list = (List<GitDiff>) container.runScriptlet("last_patch");

        for (GitDiff diff : list) {
            System.out.println("PATH: " + diff.getPath());
        }
    }
}