Java example source code file (CauseExceptionTest.java)

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Java - Java tags/keywords

causeexceptiontest, invocable, nosuchmethodexception, object, runtimeexception, scriptenginemanager, scriptexception, throwable

The CauseExceptionTest.java Java example source code

/*
 * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * @test
 * @bug 6869617
 * @summary ScriptEngine bug : ScriptException cause not set (with fix)
 */

import javax.script.*;
import java.io.*;

public class CauseExceptionTest {
    public static void main(String[] args) throws ScriptException, NoSuchMethodException {
        ScriptEngineManager sem = new ScriptEngineManager();
        ScriptEngine engine = sem.getEngineByName("nashorn");
        if (engine == null) {
            System.out.println("Warning: No js engine found; test vacuously passes.");
            return;
        }
        engine.eval("function hello_world() { print('hello world'); throw 'out of here'; } ");
        Invocable invocable = (Invocable) engine;
        try {
            invocable.invokeFunction("hello_world", (Object[])null);
        } catch (ScriptException se) {
            Throwable cause = se.getCause();
            if (cause == null) {
                throw new RuntimeException("null cause");
            }
            System.out.println(cause);
        }
    }
};