Java example source code file (ConstMacroTest.java)

This example Java source code file (ConstMacroTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

constmacrotest, exception, not, string, sub_int_constant, subclassconsts, subclassconsts_sub_double_constant\n, subclassconsts_sub_int_constant\\n, subclassconsts_super_boolean_constant\\n, subclassconsts_super_double_constant\\n, subclassconsts_super_float_constant\\n, subclassconsts_super_int_constant, superclassconsts, this

The ConstMacroTest.java Java example source code

/*
 * Copyright (c) 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 4786406 4781221 4780341 6214324
 * @summary Validates rewritten javah handling of class defined constants and
 * ensures that the appropriate macro definitions are placed in the generated
 * header file.
 * @library /tools/javac/lib
 * @build ToolBox
 * @run main ConstMacroTest
 */

import java.io.*;
import java.nio.file.Paths;

//original test: test/tools/javah/ConstMacroTest.sh
public class ConstMacroTest {

    private static final String subClassConstsGoldenFileTemplate =
        "/* DO NOT EDIT THIS FILE - it is machine generated */\n" +
        "#include <jni.h>\n" +
        "/* Header for class SubClassConsts */\n" +
        "\n" +
        "#ifndef _Included_SubClassConsts\n" +
        "#define _Included_SubClassConsts\n" +
        "#ifdef __cplusplus\n" +
        "extern \"C\" {\n" +
        "#endif\n" +
        "#undef SubClassConsts_serialVersionUID\n" +
        "#define SubClassConsts_serialVersionUID 6733861379283244755%s\n" +
        "#undef SubClassConsts_SUPER_INT_CONSTANT\n" +
        "#define SubClassConsts_SUPER_INT_CONSTANT 3L\n" +
        "#undef SubClassConsts_SUPER_FLOAT_CONSTANT\n" +
        "#define SubClassConsts_SUPER_FLOAT_CONSTANT 99.3f\n" +
        "#undef SubClassConsts_SUPER_DOUBLE_CONSTANT\n" +
        "#define SubClassConsts_SUPER_DOUBLE_CONSTANT 33.2\n" +
        "#undef SubClassConsts_SUPER_BOOLEAN_CONSTANT\n" +
        "#define SubClassConsts_SUPER_BOOLEAN_CONSTANT 0L\n" +
        "#undef SubClassConsts_SUB_INT_CONSTANT\n" +
        "#define SubClassConsts_SUB_INT_CONSTANT 2L\n" +
        "#undef SubClassConsts_SUB_DOUBLE_CONSTANT\n" +
        "#define SubClassConsts_SUB_DOUBLE_CONSTANT 2.25\n" +
        "#undef SubClassConsts_SUB_FLOAT_CONSTANT\n" +
        "#define SubClassConsts_SUB_FLOAT_CONSTANT 7.9f\n" +
        "#undef SubClassConsts_SUB_BOOLEAN_CONSTANT\n" +
        "#define SubClassConsts_SUB_BOOLEAN_CONSTANT 1L\n" +
        "#ifdef __cplusplus\n" +
        "}\n" +
        "#endif\n" +
        "#endif";

    private static final String serialVersionUIDSuffix =
            ToolBox.isWindows() ? "i64" : "LL"; ;

    public static void main(String[] args) throws Exception {
        //first steps are now done by jtreg
//        cp "${TESTSRC}${FS}SuperClassConsts.java" .
//        cp "${TESTSRC}${FS}SubClassConsts.java" .

//        "${TESTJAVA}${FS}bin${FS}javac" ${TESTTOOLVMOPTS} -d . "${TESTSRC}${FS}SubClassConsts.java"

//        "${TESTJAVA}${FS}bin${FS}javah" ${TESTTOOLVMOPTS} SubClassConsts
        ToolBox.JavaToolArgs successParams =
                new ToolBox.JavaToolArgs()
                .setAllArgs("-cp", System.getProperty("test.classes"), "SubClassConsts");
        ToolBox.javah(successParams);

//        diff ${DIFFOPTS} "${TESTSRC}${FS}${EXPECTED_JAVAH_OUT_FILE}" "${GENERATED_HEADER_FILE}"
        String subClassConstGoldenFile = String.format(subClassConstsGoldenFileTemplate,
                serialVersionUIDSuffix);
        ToolBox.compareLines(Paths.get("SubClassConsts.h"),
                ToolBox.splitLines(subClassConstGoldenFile, "\n"), null, true);
    }

}

class SuperClassConsts implements Serializable {
    // Define class constant values, base class is serializable
    private static final long serialVersionUID = 6733861379283244755L;
    public static final int SUPER_INT_CONSTANT = 3;
    public final static float SUPER_FLOAT_CONSTANT = 99.3f;
    public final static double SUPER_DOUBLE_CONSTANT  = 33.2;
    public final static boolean SUPER_BOOLEAN_CONSTANT  = false;
    // A token instance field
    int instanceField;

    public native int numValues();
}

class SubClassConsts extends SuperClassConsts {
    private final static int SUB_INT_CONSTANT = 2;
    private final static double SUB_DOUBLE_CONSTANT = 2.25;
    private final static float SUB_FLOAT_CONSTANT = 7.90f;
    private final static boolean SUB_BOOLEAN_CONSTANT = true;
}