/**
     * Searches for the property with the specified key in this property list.
     * If the key is not found in this property list, the default property list,
     * and its defaults, recursively, are then checked. The method returns the
     * default value argument if the property is not found.
     *
     * @param   key            the hashtable key.
     * @param   defaultValue   a default value.
     *
     * @return  the value in this property list with the specified key value.
     * @see     #setProperty
     * @see     #defaults
     */
    public String getProperty(String key, String defaultValue) {
        String val = getProperty(key);
        return (val == null) ? defaultValue : val;
    }

/**
 * System Property initialization for internal use only
 * Retrieves the platform, JVM, and command line properties,
 * applies initial defaults and returns the Properties instance
 * that becomes the System.getProperties instance.
 */
public final class SystemProps {

    // no instances
    private SystemProps() {}

    /**
     * Create and initialize the system properties from the native properties
     * and command line properties.
     * Note:  Build-defined properties such as versions and vendor information
     * are initialized by VersionProps.java-template.
     *
     * @return a Properties instance initialized with all of the properties
     */
    public static Map<String, String> initProperties() {

        // Initially, cmdProperties only includes -D and props from the VM
        Raw raw = new Raw();
        HashMap<String, String> props = raw.cmdProperties();

        String javaHome = props.get("java.home");
        assert javaHome != null : "java.home not set";

        putIfAbsent(props, "user.home", raw.propDefault(Raw._user_home_NDX));
        putIfAbsent(props, "user.dir", raw.propDefault(Raw._user_dir_NDX));
        putIfAbsent(props, "user.name", raw.propDefault(Raw._user_name_NDX));

        // Platform defined encoding cannot be overridden on the command line
        put(props, "sun.jnu.encoding", raw.propDefault(Raw._sun_jnu_encoding_NDX));
        var nativeEncoding = ((raw.propDefault(Raw._file_encoding_NDX) == null)
                ? raw.propDefault(Raw._sun_jnu_encoding_NDX)
                : raw.propDefault(Raw._file_encoding_NDX));
        put(props, "native.encoding", nativeEncoding);

        // Add properties that have not been overridden on the cmdline
        putIfAbsent(props, "file.encoding", nativeEncoding);

        // Use platform values if not overridden by a commandline -Dkey=value
        // In no particular order
        putIfAbsent(props, "os.name", raw.propDefault(Raw._os_name_NDX));
        putIfAbsent(props, "os.arch", raw.propDefault(Raw._os_arch_NDX));
        putIfAbsent(props, "os.version", raw.propDefault(Raw._os_version_NDX));
        putIfAbsent(props, "line.separator", raw.propDefault(Raw._line_separator_NDX));
        putIfAbsent(props, "file.separator", raw.propDefault(Raw._file_separator_NDX));
        putIfAbsent(props, "path.separator", raw.propDefault(Raw._path_separator_NDX));
        putIfAbsent(props, "java.io.tmpdir", raw.propDefault(Raw._java_io_tmpdir_NDX));
        putIfAbsent(props, "http.proxyHost", raw.propDefault(Raw._http_proxyHost_NDX));
        putIfAbsent(props, "http.proxyPort", raw.propDefault(Raw._http_proxyPort_NDX));
        putIfAbsent(props, "https.proxyHost", raw.propDefault(Raw._https_proxyHost_NDX));
        putIfAbsent(props, "https.proxyPort", raw.propDefault(Raw._https_proxyPort_NDX));
        putIfAbsent(props, "ftp.proxyHost", raw.propDefault(Raw._ftp_proxyHost_NDX));
        putIfAbsent(props, "ftp.proxyPort", raw.propDefault(Raw._ftp_proxyPort_NDX));
        putIfAbsent(props, "socksProxyHost", raw.propDefault(Raw._socksProxyHost_NDX));
        putIfAbsent(props, "socksProxyPort", raw.propDefault(Raw._socksProxyPort_NDX));
        putIfAbsent(props, "http.nonProxyHosts", raw.propDefault(Raw._http_nonProxyHosts_NDX));
        putIfAbsent(props, "ftp.nonProxyHosts", raw.propDefault(Raw._ftp_nonProxyHosts_NDX));
        putIfAbsent(props, "socksNonProxyHosts", raw.propDefault(Raw._socksNonProxyHosts_NDX));
        putIfAbsent(props, "sun.arch.abi", raw.propDefault(Raw._sun_arch_abi_NDX));
        putIfAbsent(props, "sun.arch.data.model", raw.propDefault(Raw._sun_arch_data_model_NDX));
        putIfAbsent(props, "sun.os.patch.level", raw.propDefault(Raw._sun_os_patch_level_NDX));
        putIfAbsent(props, "sun.stdout.encoding", raw.propDefault(Raw._sun_stdout_encoding_NDX));
        putIfAbsent(props, "sun.stderr.encoding", raw.propDefault(Raw._sun_stderr_encoding_NDX));
        putIfAbsent(props, "sun.io.unicode.encoding", raw.propDefault(Raw._sun_io_unicode_encoding_NDX));
        putIfAbsent(props, "sun.cpu.isalist", raw.propDefault(Raw._sun_cpu_isalist_NDX));
        putIfAbsent(props, "sun.cpu.endian", raw.propDefault(Raw._sun_cpu_endian_NDX));

        /* Construct i18n related options */
        fillI18nProps(props,"user.language", raw.propDefault(Raw._display_language_NDX),
                raw.propDefault(Raw._format_language_NDX));
        fillI18nProps(props,"user.script",   raw.propDefault(Raw._display_script_NDX),
                raw.propDefault(Raw._format_script_NDX));
        fillI18nProps(props,"user.country",  raw.propDefault(Raw._display_country_NDX),
                raw.propDefault(Raw._format_country_NDX));
        fillI18nProps(props,"user.variant",  raw.propDefault(Raw._display_variant_NDX),
                raw.propDefault(Raw._format_variant_NDX));

        return props;
    }