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Updates and launches Java 9+ Applications

There is a newer version: 1.5.9

/*
 * Copyright 2018 Mordechai Meisels
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * 		http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package org.update4j;

import java.util.Locale;

public enum OS {
    WINDOWS("win"), MAC("mac"), LINUX("linux"), OTHER("other");

    public static final OS CURRENT;

    static {
        String os = System.getProperty("os.name", "generic").toLowerCase(Locale.ROOT);

        if ((os.contains("mac")) || (os.contains("darwin")))
            CURRENT = MAC;
        else if (os.contains("win"))
            CURRENT = WINDOWS;
        else if (os.contains("nux"))
            CURRENT = LINUX;
        else
            CURRENT = OTHER;
    }

    private String name;

    OS(String name) {
        this.name = name;
    }

    public String getShortName() {
        return name;
    }

    public static OS fromShortName(String name) {
        switch (name) {
        case "win":
            return WINDOWS;
        case "mac":
            return MAC;
        case "linux":
            return LINUX;
        case "other":
            return OTHER;
        default:
            throw new IllegalArgumentException("Unknown type: " + name);
        }
    }
}