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What makes Oracle SOA Suite 12 JAR unable to recognize the JAVA_HOME?

I am trying to install Oracle SOA Suite 12 on Windows 10. I set the JAVA_HOME correctly (able to echo it), and then trying to run the JAR. It gives me the following message:
This installer must be executed using a Java Development Kit (JDK)
but C:\Program Files\Java\jre1.8.0_161 is not a valid JDK Java Home.
It seems to look for the JRE folder and by default neglecting the JAVA_HOME environment variable. I did a workaround by navigating to the JDK folder, and then running the java.exe inside the JDK folder (java.exe -jar /path/to/soasuite). It works well. I just want to know what might be the reason.

I advise you to set the properties as follow. Adapt correctly to your path in the JAVA_HOME property, and the others will follow.
JAVA_HOME := C:\java\jdk1.8.0_151
JDK_HOME := %JAVA_HOME%
JRE_HOME := %JAVA_HOME%\jre
CLASSPATH := .;%JAVA_HOME%\lib;%JAVA_HOME%\jre\lib
PATH := %JAVA_HOME%\bin;%PATH%
EDIT:
I did a workaround by navigating to the JDK folder, and then running
the java.exe inside the JDK folder (java.exe -jar /path/to/soasuite).
It works well. I just want to know what might be the reason.
This means that you are missing the change in the PATH environment.

I was not able to utilize the path variables described - did not want to restart the machine durng and install of oracle software. I was able to successfully complete the install of weblogic oracle fusion by doing the following.
RUN JAR files using command prompt due to having issues running the java installed setups for oracle12c, weblogic ,etc.
RUN command prompt as adminsitrator:
1. CHANGE DIRECTORY IN COMMAND PROMPT TO:
C:\Program Files\Java\jdk1.8.0_181\bin
RUN the command like this - pointing to the proper JAR file.
java -jar c:\oracleformssoftware\fmw_12.2.1.3.0_infrastructure.jar
This definately worked for me but please note I did finally setup the path variables instructions noted here.

Installing Spark on Windows not working

I am trying to install Apache Spark on my Windows 10 computer. My first step to install Spark was to download Java from here it was then downloaded through this path: C:\Program Files (x86)\Java the one folder that was downloaded during this installation was: \jre1.8.0_151
Next I installed the JDK from here and downloaded the windows x86 version. I used the same path as above in the Java folder to download it. After it was done I had two folders inside the Java folder: jdk1.8.0_151 and jre1.8.0_151
Afterwards, I set the JAVA_HOME variable to point to C:\PROGRA~1(x86)\Java\jdk1.8.0_151 and in Path I added %JAVA_HOME% I then installed Scala from here and downloaded the Scala binaries for Windows. The environment path was added in path as: C:\PROGRA~1(x86)\scala\bin
Next I installed Spark from here and installed spark-2.2.1-bin-hadoop2.7.tgz Afterwards, I placed this folder here D:\spark-2.2.1-bin-hadoop2.7I then added the environment variable as SPARK_HOME with the path: D:\spark-2.2.1-bin-hadoop2.7\bin and I then updated path to %SPARK_HOME%\bin
Finally I tried to see if everything was installed. I typed java -version and the correct java was installed. I then typed scala and scala was open for me to type in expressions and such. I then typed in spark-shell but I got this error:
'spark-shell' is not recognized as an internal or external command,
operable program or batch file.
What am I doing wrong that is not making spark open? Please note: I am using cmd for everything.

It looks like you set your %SPARK_HOME% to a wrong place and thus when "I then updated path to %SPARK_HOME%\bin" it resulted in adding D:\spark-2.2.1-bin-hadoop2.7\bin\bin with double \bin which is obviously wrong. %SPARK_HOME% should be without \bin.
Generally you can test your environment variables by calling echo %PATH% in the command line or SET to show all of them

Can't install Java JDK

Ok, this is embarrassing, but I can't install Java. I have no experience in Java so any help appreciated.
So as ussual I install Java JDK (The JRE I think is already there before) I have jre7 and jdk1.8.0.0_05
I have install it, but Java still not in my computer
Here's some desperate cmd check
>C:\>WHERE java
>INFO: Could not find files for the giving pattern
>C:\>java
>'java is not recognized as an internal or external command, operable program or batch file.
Where my java folder is C:\Program Files (x86)\Java\jdk1.8.0.0_5
On my desperation I created the variable JAVA_HOME on the given directory. Afterward, I tried this.
>C:\>echo %JAVA_HOME%
%JAVA_HOME%
I was expecting the cmd to echo the directory.
The variable PATHEXT has the following in it:
.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC
Clariffication:
I tried to reinstall the Java Jdk Installer with Windows Installer, but no luck.
If this matters, I'm running from Windows 7.
I tried to learn from Here
After closer inspection, I can run java and javac after going all the way into the directory (so inputing java outside the bin will do nothing good)

Add C:\Program Files (x86)\Java\jdk1.8.0.0_5\bin to your PATH variable
Here is how mine is

I think you may have not added JAVA_HOME environment variable, and/or to PATH environment variable neither.
Give a read to this article
http://www3.ntu.edu.sg/home/ehchua/programming/howto/jdk_howto.html

Regarding you last comment, i think you should put the java directory right infront of all the other directory because, if you were to install another version of java it might not be used if you place it behind.
(For Advanced Users Only)
I suggested that you place the JDK bin directory in front of "c:\windows\system32" and "c:\windows". This is because some Windows systems may have an out-dated copy of JDK/JRE in these directories. Do a search for "java.exe", and you will be amazed by the findings.
You could read "Java Applications and Environment Variable" for more discussions about PATH environment variable.
I also recommend that you define an environment variable called JAVA_HOME, which contains the JDK installed directory, and include the JDK bin directory in the PATH via JAVA_HOME, i.e., PATH=%JAVA_HOME%\bin;.....

How to set path for Jre 6 when jre 7 installed?

I am programming through java 1.6 u_17, but i have JRE version 6 and JRE version 7 installed, so how to run my compiled program from JDK 1.6 to run through the JRE 6 only?
By Default, it runs my class files through JRE 7, how to change this behavior? Any idea of setting Class path in windows 7, as we does it for JDK.
The following is shown in my command prompt
E:\JAVA>javac -version
javac 1.6.0_17
E:\JAVA>java -version
java version "1.7.0_09"
Java(TM) SE Runtime Environment (build 1.7.0_09-b05)
Java HotSpot(TM) Client VM (build 23.5-b02, mixed mode, sharing)
This is for my SET command showing the Windows 7 environment paths
ALLUSERSPROFILE=C:\ProgramData
APPDATA=C:\Users\Administrator\AppData\Roaming
ClassPath=C:\Program Files\Java\jdk1.6.0_17\bin\mysql-connector-java-5.1.5-bin.jar;
CommonProgramFiles=C:\Program Files\Common Files
COMPUTERNAME=RANDMATE-PC
ComSpec=C:\Windows\system32\cmd.exe
FP_NO_HOST_CHECK=NO
HOMEDRIVE=C:
HOMEPATH=\Users\Administrator
JAVA_HOME=C:\Program Files\Java\jre6\bin;
LOCALAPPDATA=C:\Users\Administrator\AppData\Local
LOGONSERVER=\\RANDMATE-PC
NUMBER_OF_PROCESSORS=2
OS=Windows_NT Path=C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files\Java\jdk1.6.0_17\bin;C:\Program Files\Java\jre6\bin;C:\Program Files\MyS
QL\MySQL Server 5.1\bin;C:\Program Files\UltraEdit\;C:\Program Files\Jar2Exe Wizard\;C:\Program Files\Java\jre6\bin;
PATHEXT=.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC
PROCESSOR_ARCHITECTURE=x86
PROCESSOR_IDENTIFIER=x86 Family 15 Model 6 Stepping 5, GenuineIntel
PROCESSOR_LEVEL=15
PROCESSOR_REVISION=0605
ProgramData=C:\ProgramData
ProgramFiles=C:\Program Files
PROMPT=$P$G
PSModulePath=C:\Windows\system32\WindowsPowerShell\v1.0\Modules\
PUBLIC=C:\Users\Public
SESSIONNAME=Console
SystemDrive=C:
SystemRoot=C:\Windows
TEMP=C:\Users\ADMINI~1\AppData\Local\Temp
TMP=C:\Users\ADMINI~1\AppData\Local\Temp
USERDOMAIN=RANDMATE-PC
USERNAME=Administrator
USERPROFILE=C:\Users\Administrator
windir=C:\Windows

Looks like you are using Windows. Please go the Environment Variables and define a user variable as:
Right Click(My Computers) -> Advanced -> Environment Variables -> Add
Variable Name = JAVA_HOME
Variable Value = Root Folder of Java 1.6.0_17 installation
Also in the same screen, please check the PATH variable and make sure **bin** Folder of Java 1.6.0_17 installation is added in the path preferably in the beginning and remove the Java 7 from the path, if it is there.

I fix this problem by removing the java.exe in system32 folder. And then in the cmd the java command refer to the jdk set in the path enviroment variable.

java.exe is also available in C:\windows\system32 and in your case its version might be 1.7..
Since your path has C:\windows\system32 first. no matter how to set rest of the path, sonar always will load jre7. (refer to conf\wrapper.conf in Sonar directory, by default it has wrapper.java.command=java)
To fix this, change following property of the "wrapper.conf" file
wrapper.java.command=C:\Program Files\Java\jdk1.6.0_XX\bin\java
this will fix the issue irrespective of the path variables.

For those who had the same problem I suggest reading this thread:
https://superuser.com/questions/479889/wrong-java-version-being-reported
Quote of wmz: "To check what actually executes when you run 'java -version' run from command line:
for %I in (java.exe) do #echo %~$PATH:I"

Windows is checking the PATH variable to find an executable named java and using that to launch your application. It is quite normal in a development environment to have many installations (as you do). However this calls on you to manage your environment.
There are two ways for you to set environment variables in Windows. By going to My Computer > Advanced Settings > Environment Variables as described above, you can set a variabler to your JDK installation and then update the Path to find the bin directory in that installation. Youy have the choice of updating System variables (all users) or user variables (your account only).
Personally, I prefer not to use the system/user environment variables as this provides less flexibility. You can use bat files to explicitly set the Path for a specific moment in time, or indeed to override the JAVA_HOME to point to a different installation.
If you are using an IDE you can usually specify the target runtime on a per project basis. Alternatively, when running the program, provide the fully qualified path to the version of the java executable you wish to use.

I had same problem. Issue is that Java installation will copy a java.exe, javaw.exe and javaws.exe to windows/system32 directory. You must have installed JDK7 recently.
I just removed those files from Windows/System32 directory, however, kept older version in path. This solved the issue.
Try it out.

I was facing the similar problem. I am using Java 7 and Java 8 together. The Java 8 was installed in the machine but the 7 set-up I copied from another system. I have already set the JAVA_HOME & path pointing to 7. But when I try to echo %path%, it shows the Jdk 8 in the class path. after lots of google, I have found "C:\ProgramData\Oracle\Java\javapath" in the path. Removing the line from the path solved the problem.

Background
I'm using Windows 8.1 and I have both JDK6 and JDK8 installed. For development purpose, I needed to get java version "1.6.0_45" over the command java -version and javac 1.6.0_45 over javac -version. The second command was working as expected after setting JAVA_HOME as Home folder of JDK6 and adding %JAVA_HOME/bin% in Path. However the first command was still returning java version "1.8.0_71"
Troubleshooting
I could find the an entry in the Path environment variable which points to C:\ProgramData\Oracle\Java. This folder actually contains short cut to java.exe of JDK8.
Proper solution: Uninstall JDK 8
Workaround:Edit the short cut file so that it points towards java.exe inside %JAVA_HOME%\bin (Please replace the variable with actual folder)

set the PATH variable to your jdk6\bin directory. so that it will pick the javac and java from jdk6.
for setting the path variable go to Environment Variables.
After setting the path variables you need to restart your command prompt. (NOT the computer).

Just right click on MyComputer, then Advanced System Settings-->Environment Variables-->New
Then in the "variable Name" text field add the string "PATH" or if it already exists select PATH from the list and click edit then append the path for "bin" folder in java in program files to the Variable value text field followed by a semicolon (;), if not exits add the path of bin directory of your java folder in "Variable Value" field and click "OK".
If you want to check the result, open up a command prompt and type "java" then hit enter.

For windows 7(X86) path setting:
first step:
Mycomputer(Right click)-->properties-->advanced settings-->environment variales-->new
(user variable)
on this first varible name: "" JAVA_HOME "" value: "" C:\Program Files\Java\jdk1.7.0_45 ""
second variable name: "" PATH "" value: "" C:\Program Files\Java\jdk1.7.0_45\bin;.; ""

There are two types of path for java : Permanent & Temporary.
Here is the video tutorial describing how to set path for Java?
How to Set path for Java : https://www.youtube.com/watch?v=rM4Qq3Ua7Sk
This video tutorial will guide you in setting permanent and temporary path for Java. Simply follow the steps. This will work with any version of Java, JDK or JRE. In video I have used path of JDK, Simply copy path of JRE instead of JDK and rest is same.
OR read the tutorial here : How to Set path for Java : http://aatul.me/2011/08/24/how-to-set-path-for-java/
Hope this solutions will help you.

Why does java -version return an old version?

OS: Windows XP
I am using yuicompressor-2.4.2 to compress some CSS before uploading to my server.
But when I run it, the following exception appears:
Exception in thread "main" java.lang.UnsupportedClassVersionError:
com/yahoo/platform/yui/compressor/Bootstrap (Unsupported major.minor version 48.0)
So I think it's because of the JRE.
I typed in the command:
cmd: java -version
And it says:
java version "1.3.1_01"
But it should say 1.6.0_16, since I have installed the latest version.
What should I do to make Java use the latest version instead of the old one?

Set the environment variable JAVA_HOME pointing to the directory where you have jdk 1.6.0
set JAVA_HOME=your_path_to_jdk1.6
set PATH=%JAVA_HOME%/bin;.;..;%PATH%
That's from a command window. Also you can do it from "My PC > Properties > Advanced > Environment variables"

Go to the system32 directory C:\Windows\System32 and delete following 3 files
java.exe
javaw.exe
javaws.exe
Now create a JAVA_HOME environment variable with value={root path of your jdk installation} and add the path till bin folder of your jdk in the PATH environment variable.
Open a fresh command prompt and run java -version to confirm the change

If you are using windows 7/10 go to command prompt and type
where java
Delete all the symbolic link shows below other than your actual installation directory.
Even if correctly added all the environment variables still sometime you can get wrong versions especially when you have multiple version installed in your system and want to switch between them.

On Windows, the JRE installs a java executable in the Windows directory, which should be the first java in your path. This is just a wrapper that looks in the Windows Registry to find the Java home directory (should be "%SystemDrive%\Program Files\Java\jre6" for Java 6) and runs using the libraries there.
Run %SystemRoot%\system32\java -version and see what you get. If that is Java 6, you have entries in your path before %SystemRoot%\system32 (which really should be first). Either fix your %PATH% variable, or you'll have to be explicit whenever you want to run this version of Java.
If running that instance of java doesn't report Java 6, its not installed (correctly). Uninstall and try installing again.
If you are having trouble because of the PATH, it is because you or some software you installed monkeyed with it; I recommend using the default which is to have system32 first. Everything works fine if the defaults are used.
Also, %JAVA_HOME% is not used by the JRE itself at all. Some common Java applications like tomcat and ant honor the %JAVA_HOME% setting, so perhaps yuicompressor does too. But this is a de facto convention, not a standard.

after where java in Command prompt
for example
where java
C:\Program Files\Common Files\Oracle\Java\javapath
C:\Program Files\Java\jdk-11.0.10\bin\java.exe
delete C:\Program Files\Common Files\Oracle folder
then close all terminals and write java -version in the terminal. it will show the right version
worked for me

You should modify your PATH environment variable:
My PC > Right click > properties > Advanced > Environment variables
And modify "Path"
Append at the end the path to your 1.6 installation:
;C:\jdk1.6.xxx\bin
and remove the previous one if present.

Add %JAVA_HOME%/bin to your PATH environment variable where JAVA_HOME is set to your JRE6u16 directory

I had the same problem. In System Properties > Environment Variables > System Variables > PATH make sure there is no other path associated with Java. To make sure, type in and check Java paths.
where java
Re-open Command Prompt and type java -version again. I hope this helps.

first by the following command, you should be aware of .exe file which runs when you type java in the command prompt
where java
C:\Program Files\Common Files\Oracle\Java\javapath
C:\Program Files\Java\jdk-11.0.10\bin\java.exe
as you see above , cmd first reads java from
C:\Program Files\Common Files\Oracle\Java\javapath
so go to the path above and remove java files .
then it should work fine

You should check your PATH environment variable. It is possible that some application you have installed has put its version of the jre in front of yours in the path.

It looks like the older Java version is still on the system PATH environment variable (where the OS looks for commands) or JAVA_HOME (where yuicompressor may look for the java executable)
How those variables are changed depends on your operating system.