java: get runtime environment

 

/**
 * encoding: utf-8
 * 版權所有 2023 塗聚文有限公司
 * 許可信息查看：
 * Java開源框架和庫
 * http://projects.apache.org
 * https://eclipse.org/projects
 * http://spring.io/projects
 * https://redhatofficial.github.io
 * https://sourceforge.net
 * https://github.com
 * https://bitbucket.org
 * https://gitlab.org
 * https//search.maven.org
 * http://darwinsys.com/jwf
 * JSF附加庫
 * https://bootsfaces.net
 * http://butterfaces.org
 * http://icefaces.org
 * http://openfaces.org
 * http://primefaces.org
 * http://richfaces.org
 * http://deltaspike.apache.org
 * http://www.jboss.org/jsfunit/
 * http://omnifaces.org
 *
 * 描述：
 * # Author    : geovindu,Geovin Du 塗聚文.
 * # IDE       : IntelliJ IDEA 2023.1 Java 17
 * # Datetime  : 2023 - 2023/11/15 - 6:02
 * # User      : geovindu
 * # Product   : IntelliJ IDEA
 * # Project   : javademo
 * # File      : Env.java  類
 * # explain   : 學習
 **/

package Common;


//import com.darwinsys.*;

public class Env {

    /**
     *
     * @return
     */
    public  static String getEnv()
    {
        return ("system.getenv(\"path\")="+System.getenv("PATH"));
    }

    /**
     *
     * @return
     */
    public  static String getColor()
    {
        String str=System.getProperty("pencil_color");
        return str;
    }

    /**
     *遍歷系統屬性信息
     */
    public  static void getEnvList()
    {
        System.getProperties().forEach((k,v)->System.out.println(k+"->"+v));

    }
}

　　Java Cookbook 

IDE: 

JAVA IDE：IntelliJ IDEA,NetBeans,Eclipse

 

調用：

/**
 * encoding: utf-8
 * 版權所有 2023 塗聚文有限公司
 * 許可信息查看：
 * 描述：
 * # Author    : geovindu,Geovin Du 塗聚文.
 * # IDE       : IntelliJ IDEA 2023.1 Java 17
 * # Datetime  : 2023 - 2023/11/15 - 6:02
 * # User      : geovindu
 * # Product   : IntelliJ IDEA
 * # Project   : javademo
 * # File      : main.java  類
 * # explain   : 學習
 *GraalVM
 * https://www.graalvm.org/
 * https://www.oracle.com/cn/java/graalvm/
 * https://www.graalvm.org/downloads/#
 * com.darwinsys
 *CVS,Subversion,Git
 * http://git-scm.com
 */

import com.darwinsys.util.*;
import Common.Env;


public class Main {

    /**
     *
     * @param args
     */
    public static void main(String[] args)
    {
        System.out.println("Hello java world!");
        System.out.println(Env.getEnv());
        System.out.println(Env.getColor());
        Env.getEnvList();

    }
}