55 lines
1.9 KiB
Java
55 lines
1.9 KiB
Java
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package com.baeldung;
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import groovy.lang.Binding;
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import groovy.lang.GroovyClassLoader;
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import groovy.lang.GroovyShell;
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import org.codehaus.groovy.control.CompilerConfiguration;
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import org.slf4j.Logger;
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import org.slf4j.LoggerFactory;
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/**
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* Hello world!
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*
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*/
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public class App {
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private final static Logger LOG = LoggerFactory.getLogger(App.class);
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private final GroovyClassLoader loader;
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private final GroovyShell shell;
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private App() {
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loader = new GroovyClassLoader(this.getClass().getClassLoader());
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CompilerConfiguration config = new CompilerConfiguration();
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config.setScriptBaseClass("com.baeldung.CalcScript");
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shell = new GroovyShell(loader, new Binding(), config);
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}
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private void runScript(int x, int y) {
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Object script = shell.parse(String.format("calcSum(%d,%d)", x, y));
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assert script instanceof CalcScript;
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Object result = ((CalcScript) script).run();
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LOG.info("Result of run() method is {}", result);
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Object script2 = shell.parse("CalcScript");
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Object result2 = ((CalcScript) script2).calcSum(x + 7, y + 7);
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LOG.info("Result of calcSum() method is {}", result2);
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}
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private void runClass(int x, int y) throws ClassNotFoundException, IllegalAccessException, InstantiationException {
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Class calcClass = loader.loadClass("com.baeldung.CalcMath");
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Object calc = calcClass.newInstance();
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assert calc instanceof CalcMath;
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Object result = ((CalcMath) calc).calcSum(x, y);
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LOG.info("Result is {}", result);
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}
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public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException {
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App app = new App();
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LOG.info("Running a groovy script...");
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app.runScript(5, 10);
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LOG.info("Running a groovy class...");
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app.runClass(1, 3);
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}
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}
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