JAVA EE: Java Tutorial: Environment variables in java

Thursday 4 May 2017

Java Tutorial: Environment variables in java | java environment variable

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Java Tutorial: Environment variables in java | java environment variable

EnvMap.java

import java.util.Map;

public class EnvMap
{
    public static void main(String[] args)
    {
        /*
         * Returns an unmodifiable string map view of the
         * current system environment.
         */
        Map<String, String> env = System.getenv();
        for (String envName : env.keySet())
        {
            /*
             * Gets the value of the specified environment
             * variable.
             */
            String envValue = env.get(envName);
            System.out.format("%s=%s%n", envName, envValue);
        }
    }
}

Output

LOCALAPPDATA=C:\Users\Ramesh\AppData\Local
PROCESSOR_LEVEL=6
FP_NO_HOST_CHECK=NO
USERDOMAIN=Ramesh-PC
LOGONSERVER=\\RAMESH-PC
JAVA_HOME=C:\Java\jdk1.8.0_111
PROMPT=$P$G
SESSIONNAME=Console
ALLUSERSPROFILE=C:\ProgramData
PROCESSOR_ARCHITECTURE=AMD64
PSModulePath=C:\Windows\system32\WindowsPowerShell\v1.0\Modules\
SystemDrive=C:
=ExitCode=00000000
=C:=C:\
APPDATA=C:\Users\Ramesh\AppData\Roaming
USERNAME=Ramesh
ProgramFiles(x86)=C:\Program Files (x86)
CommonProgramFiles=C:\Program Files\Common Files
Path=C:/Java/jre1.8.0_111/bin/server;C:/Java/jre1.8.0_111/bin;C:/Java/jre1.8.0_111/lib/amd64;C:\ProgramData\Oracle\Java\javapath;C:\Program Files (x86)\AMD APP\bin\x86_64;C:\Program Files (x86)\AMD APP\bin\x86;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Intel\WiFi\bin\;C:\Program Files\Common Files\Intel\WirelessCommon\;C:\Program Files\Lenovo\Bluetooth Software\;C:\Program Files\Lenovo\Bluetooth Software\syswow64;C:\Program Files\OpenVPN\bin;C:\Java\jdk1.8.0_111\bin;C:\Program Files\TortoiseGit\bin;C:\Program Files\Git\cmd;C:\Program Files\TortoiseHg\;C:\Program Files\Intel\WiFi\bin\;C:\Program Files\Common Files\Intel\WirelessCommon\;D:\eclipse;
PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC
OS=Windows_NT
COMPUTERNAME=RAMESH-PC
PROCESSOR_REVISION=2a07
CommonProgramW6432=C:\Program Files\Common Files
ComSpec=C:\Windows\system32\cmd.exe
ProgramData=C:\ProgramData
ProgramW6432=C:\Program Files
=D:=D:\eclipse
HOMEPATH=\Users\Ramesh
SystemRoot=C:\Windows
TEMP=C:\Users\Ramesh\AppData\Local\Temp
HOMEDRIVE=C:
PROCESSOR_IDENTIFIER=Intel64 Family 6 Model 42 Stepping 7, GenuineIntel
USERPROFILE=C:\Users\Ramesh
TMP=C:\Users\Ramesh\AppData\Local\Temp
CommonProgramFiles(x86)=C:\Program Files (x86)\Common Files
ProgramFiles=C:\Program Files
PUBLIC=C:\Users\Public
NUMBER_OF_PROCESSORS=4
windir=C:\Windows
AMDAPPSDKROOT=C:\Program Files (x86)\AMD APP\
=::=::\