Java判断操作系统

根据System.getProperty("os.name")值判断

public class OS {
    public enum PlatformEnum {
        MAC, LINUX, WINDOWS;

    }

    private static PlatformEnum platform;

    public static PlatformEnum platform() {
        if(platform == null) {
            String os = System.getProperty("os.name");
            String osName = System.getProperty("os.name");
            System.out.println(osName);
            if (osName.startsWith("Mac OS")) {
                platform = PlatformEnum.MAC;
            } else if (osName.startsWith("Windows")) {
                platform = PlatformEnum.WINDOWS;
            } else {
                platform = PlatformEnum.LINUX;
            }
        }
        return platform;
    }

}