Java example source code file (WErrorGen.java)

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Java - Java tags/keywords

gen, ioexception, javactestingabstractprocessor, javafileobject, list, override, roundenvironment, typeelement, util, werrorgen, writer

The WErrorGen.java Java example source code

/*
 * Copyright (c) 2010, 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 6403456
 * @summary -Werror should work with annotation processing
 * @library /tools/javac/lib
 * @build   JavacTestingAbstractProcessor
 * @compile WErrorGen.java
 * @compile -proc:only -processor WErrorGen WErrorGen.java
 * @compile/fail/ref=WErrorGen.out -XDrawDiagnostics -Werror -Xlint:rawtypes -processor WErrorGen WErrorGen.java
 */

import java.io.*;
import java.util.*;
import javax.annotation.processing.*;
import javax.lang.model.*;
import javax.lang.model.element.*;
import javax.tools.*;

public class WErrorGen extends JavacTestingAbstractProcessor {
    @Override
    public boolean process(Set<? extends TypeElement> annotations,
                           RoundEnvironment roundEnv) {
        if (++round == 1) {
            try {
                JavaFileObject fo = filer.createSourceFile("Gen");
                Writer out = fo.openWriter();
                out.write("import java.util.*; class Gen { List l; }");
                out.close();
            } catch (IOException e) {
            }
        }
        return true;
    }

    int round = 0;
}