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def greet(name) {
    "Hello, $name!"
}

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import groovy.lang.GroovyClassLoader;
import groovy.lang.GroovyObject;

public class Main {
    public static void main(String[] args) throws Exception {
        // 鍒涘缓GroovyClassLoader
        GroovyClassLoader classLoader = new GroovyClassLoader();

        // 鍔犺浇Groovy鑴氭湰绫?/span>
        Class<?> groovyClass = classLoader.parseClass(new File("example.groovy"));

        // 鍒涘缓Groovy鑴氭湰瀵硅薄
        GroovyObject groovyObject = (GroovyObject) groovyClass.getDeclaredConstructor().newInstance();

        // 璋冪敤Groovy鑴氭湰鏂规硶
        String result = (String) groovyObject.invokeMethod("greet", "John");

        // 杈撳嚭缁撴灉
        System.out.println(result);
    }
}

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