Java获得系统环境变量

package org.loon.test;

import java.util.Iterator;

import java.util.Map;

import java.util.Properties;

import java.util.TreeMap;

/** *//**

* <p>

* Title: LoonFramework

* </p>

* <p>

* Description:

* </p>

* <p>

* Copyright: Copyright (c) 2007

* </p>

* <p>

* Company: LoonFramework

* </p>

*

* @author chenpeng

* @email：ceponline@yahoo.com.cn

* @version 0.1

*/

public class SystemInfo ...{

public final static String envStr[] = ...{ "unknown OS type",

"unknown OS version", "unknown OS architecture",

"unknown JRE version", "unknown JRE vendor" };

/** *//**

* 遍历所有设置

* @param <K>

* @param <V>

*/

@SuppressWarnings("unchecked")

public static <K, V> void systemProperties() ...{

Properties p = System.getProperties();

TreeMap<K, V> map = new TreeMap<K, V>();

map.putAll((Map<? extends K, ? extends V>) p);

Iterator itr = map.keySet().iterator();

while (itr.hasNext()) ...{

String key = (String) itr.next();

String value = (String) map.get(key);

System.out.println(key + "=" + value);

}

}

/** *//**

* sun制造标记

* @param type

* @return

*/

public boolean isSun(String type) ...{

return type.indexOf("Sun") != -1;

}

/** *//**

* applet制造标记

* @param type

* @return

*/

public boolean isApple(String type) ...{

return type.indexOf("Apple") != -1;

}

/** *//**

* hp制造标记

* @param type

* @return

*/

public static boolean isHPUX(String type) ...{

return type.indexOf("Hewlett-Packard Company") != -1;

}

/** *//**

* ibm制造标记

* @param type

* @return

*/

public static boolean isIBM(String type) ...{

return type.indexOf("IBM") != -1;

}

/** *//**

* Blackdown制造标记

* @param type

* @return

*/

public static boolean isBlackdown(String type) ...{

return type.indexOf("Blackdown") != -1;

}

/** *//**

* bea制造标记

* @param type

* @return

*/

public static boolean isBEAWithUnsafeSupport(String type) ...{

if (type.indexOf("BEA") != -1) ...{

String vmVersion = System.getProperty("java.vm.version");

if (vmVersion.startsWith("R")) ...{

return true;

}

String vmInfo = System.getProperty("java.vm.info");

if (vmInfo != null) ...{

return (vmInfo.startsWith("R25.1") || vmInfo

.startsWith("R25.2"));

}

}

return false;

}

void getEnv() ...{

// os.name 主机操作系统的名称

// os.version 主机操作系统的版本

// os.arch 主机操作系统的体系结构

// java.version java版本

// java.vendor java厂商

String as[] = ...{ "os.name", "os.version", "os.arch", "java.version",

"java.vendor" };

for (int i = 0; i < as.length; i++) ...{

try ...{

envStr[i] = System.getProperty(as[i]);

System.out.println((as[i] + "=" + ((i==4)?envStr[i]+" "+isSun(envStr[i]):envStr[i])).intern());

} catch (Exception ex) ...{

}

}

}

public static void main(String[] args) ...{

new SystemInfo().getEnv();

System.out.println(" 全部设置 ");

//显示所有设置

systemProperties();

}

}

转载：http://blog.csdn.net/cping1982/archive/2008/01/15/2045645.aspx