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In Java, how do I identify the OS system programmatically?


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I'm reading this article about the function of OS system and I'd want to know the operating system of the host on which my Java program is executing programmatically (for example: I would like to be able to load different properties based on whether I am on a Windows or Unix platform). What is the most reliable and safest approach to achieve this?

Edited by Mobo0
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OSValidator.java

package com.mkyong.system;

public class OSValidator {

    private static String OS = System.getProperty("os.name").toLowerCase();

    public static void main(String[] args) {

        System.out.println("os.name: " + OS);

        if (isWindows()) {
            System.out.println("This is Windows");
        } else if (isMac()) {
            System.out.println("This is Mac");
        } else if (isUnix()) {
            System.out.println("This is Unix or Linux");
        } else if (isSolaris()) {
            System.out.println("This is Solaris");
        } else {
            System.out.println("Your OS is not support!!");
        }
    }

    public static boolean isWindows() {
        return (OS.indexOf("win") >= 0);
    }

    public static boolean isMac() {
        return (OS.indexOf("mac") >= 0);
    }

    public static boolean isUnix() {
        return (OS.indexOf("nix") >= 0
                || OS.indexOf("nux") >= 0
                || OS.indexOf("aix") > 0);
    }

    public static boolean isSolaris() {
        return (OS.indexOf("sunos") >= 0);
    }

}

 

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