src/jdk.jpackage/share/classes/jdk/jpackage/internal/model/RuntimeBuilder.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
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 * accompanied this code).
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package jdk.jpackage.internal.model;

import java.nio.file.Path;
import java.util.List;

/**
 * Creates Java runtime.
 */
@FunctionalInterface
public interface RuntimeBuilder {

    /**
     * Creates Java runtime in the given app image.
     *
     * @implNote Java runtime should be created in the directory returned by
     *           {@link AppImageLayout#runtimeDirectory()} method called on the
     *           given app image layout object.
     *
     * @param appImageLayout the app image where to create Java runtime.
     * @throws PackagerException if packaging error occurs
     */
    void createRuntime(AppImageLayout appImageLayout) throws PackagerException;

    /**
     * Gets the default set of paths where to find Java modules.
     *
     * @return the default set of paths where to find Java modules
     */
    public static List<Path> getDefaultModulePath() {
        return List.of(
                Path.of(System.getProperty("java.home"), "jmods").toAbsolutePath());
    }
}