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When installing Apache Tomcat error shows while choosing path for Java

While installing the Apache Tomcat, when I'm choosing the path for Java, it shows error like "No Java Virtual Machine found in folder". How can I solve this issue and where can I download essential file to install tomcat. Any Solution ??

i know this is late but maybe it could be useful for someone ,
apache tomcat requires the JRE installed in your machine , here is the link from oracle for jre 8:
https://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html

You need to use the root of your java folder in the Tomcat installation wizard.
So use C:\Program Files\java\jdk-11.0.15.10-hotspot or equivalent. Do not point to inner directories like \bin or \bin\server & \bin\client.

Probably your problem related to wrong JAVA_HOME setting.
In Windows, from Command Line you can just type set ja and ensure that JAVA_HOME points to correct Java installation

SQL Developer with JDK (64 bit) cannot find JVM

I just wasted one morning trying to get SQL developer to work on my current setup:
OS: Windows 8.1 virtual machine running on mac via Parallels.
No oracle client or instant client installed
No Java installed
The reproducible steps are
I downloaded SQL Developer for Windows with JDK (all 64-bit) and unzipped it to C:/Program Files/.
I double clicked on C:/Program Files/sqldeveloper/sqldeveloper.exe
I get the following message:
Unable to launch the Java Virtual Machine
Located at path:
C:/Program Files/sqldeveloper/jdk/jre/bin/server/jvm.dll
Can someone please help me? I also tried first installing Java 1.8 (64 bit) and then the SQL developer version without Java. This doesn't work either. When I select the location of the JDK home, it also sent one error message saying that it couldn't find any JVMs where I said. To add insult to injury, every time I follow this procedure, the Panda antivirus tells me that sqldeveloper is infected, deletes the file and encourages me to restart.
Can someone please help me? I would mostly appreciate.
Thank you very much in advance

I had the same problem and solved it by copying the MSVCR100.dll file from sqldeveloper\jdk\jre\bin to the sqldeveloper\sqldeveloper\bin folder.
Credit goes to Erik Anderson from SQL Developer failed to start
Note that different versions of SQL Developer need different versions of MSVCR*.dll. Various comments below have offered which versions worked for them.

Create directory bin in
D:\sqldeveloper\jdk\
Copy
msvcr100.dll
from
D:\sqldeveloper\jdk\jre\bin
to
D:\sqldeveloper\jdk\bin

I had a similar issue when opening the sql developer it gave me the below error
Unable to launch the Java Virtual Machine due to missing file MSVCR100.DLL
I was using JDK 8 and windows 64 bit version. Also I downloaded the oracle sql developer software with no jdk/jre option since I already have jdk 8 installed in my system. While double clicking the sqldeveloper.exe file, it asked me to input the path of the JDK. I gave the path and then it gave me the JVM MSVCR100.DLL error.
I checked inside the C:\Program Files\Java\jdk1.8.0_271\jre\bin and couldnt find the MSVCR100.DLL file there.
Then after searching the microsoft forum, understood this dll is part of the 64Bit: Microsoft Visual C++ 2010 SP1 Redistributable Package (x64).
After installing the above microsoft package I am able to find the dll under C:\Windows\System32
Then did the below,
Copied the C:\Windows\System32\msvcr100.dll --> C:\Program Files\Java\jdk1.8.0_271\jre\bin
This resolved the error and I was able to open up the Oracle SQL developer when it found the right dll.

If folder sqldeveloper/jdk doesn't contain folder bin,
you can copy folder bin from folder sqldeveloper/jdk/jre into sqldeveloper/jdk.

Depending on the issue, whether it's JAVA home path not correctly set or missing msvcr100.dll file, follow the below methods to rectify the problem:
1. Issue with JAVA home path not correctly set:
Follow these steps:
Go to directory where SQL Developer is installed.
Open the /bin directory.
Open sqldeveloper.conf in any editor to edit.
Remove the complete line starting with "SetJavaHome"
If you see: SetJavaHome ../../jdk, this is probably the wrong config file.
Instead, for try something like: C:\Users\${username}\AppData\Roaming\sqldeveloper\4.2.0\product.conf
Or: C:\Users\${username}\Application Data\sqldeveloper\4.2.0\product.conf
Save and close the file
Start SQL Developer again.
Provide the JAVA_HOME path, e.g., C:\Program Files (x86)\Java\jdk1.8.0_92
Important: Do not include suffix \bin\java.exe
Important: If running 32-bit SQL Developer, be sure to use a 32-bit JVM. (Same for 64-bit.)
2. Issue with missing msvcr100.dll file:
OP stated the following in his comments below:
If I first install the jdk and then sql developer without Java, it
tells me Unable to launch the Java Virtual Machine Located at path:
C:/Program Files/Java/jdk1.8.0_45/bin/msvcr100.dll
So, the error message is clear:
Unable to launch the Java Virtual Machine Located at path:
C:/Program Files/Java/jdk1.8.0_45/bin/msvcr100.dll
Follow these steps:
copy:
MSVCR100.dll
from:
sqldeveloper\jdk\jre\bin
to:
sqldeveloper\sqldeveloper\bin
And relaunch SQL Developer again.
What is msvcr100.dll file?:
msvcr100.dll is a part of Microsoft Visual C++ and is required to run programs developed with Visual C++. Some applications like SQL Developer in the question, needs the file in the SQL Developer installation folder.
What options are available to fix the issue?:
Copying it from Windows systemfolder to the installation folder of application should fix the problem. Also, you could add the PATH to the msvcr100.dll file based on 32/64 bit requirements. If the local file itself is deleted or corrupt by any chance, then it could be downloaded online or could also be reinstalled via Microsoft visual C++ 2010 Redistributable package. It is important to use the correct version based on the software. Use the 32bit dll file for 32bit software, and 64bit dll file for 64bit software.

I run into the same error message when trying to install SQL Developer from "Windows 64-bit with JDK 8 included" zip file in my Windows 10 Enterprise.
Launching the most recent SQL Developer version 4.1.3 in Windows 10 shows an error:
Unable to launch the Java Virtual Machine Located at path:
C:\Users\<USER>\Downloads\sqldeveloper-4.1.3.20.78-x64\sqldeveloper\jdk\jre\bin\server\jvm.dll
The path exists and is valid.
The same zip file works on Windows 7 Professional.
The problem was a missing msvcr100.dll.
I simply copied C:\Program Files\Oracle\VirtualBox\msvrc100.dll to C:\Users\<USER>\Downloads\sqldeveloper-4.1.3.20.78-x64\sqldeveloper\sqldeveloper\bin\ and SQL Developer started to work.
The details can be found from Issue running SQL Developer x64 4.1.3 with JDK.
Funny that Oracle VirtualBox team can include the dll into the installation package but Oracle SQL Developer team can't.

Today I try to use oracle client 64 and failed connect Connection Identifier which is defined at tnsnames.ora file. I assume that try to connect Oracle 32 Bit Server using SQL Developer 64 bit. That is why I install new jdk x86 and trying to change jdk path but this error happened:
Trying to download SQL Developer 32 Bit, but at the site said that the bundle support both 32 bit and 64 bit depend on java installed.
Windows 32-bit/64-bit: This archive. will work on a 32 or 64 bit
Windows OS. The bit level of the JDK you install will determine if it
runs as a 32 or 64 bit application. This download does not include the
required Oracle Java JDK. You will need to install it if it's not
already on your machine.
My java home is 64 bit. New installed 32 bit jdk is not set at java home.
I need to open $User_dir\AppData\Roaming\sqldeveloper\version\product.conf
Remove line SetJavaHome C:\Program Files\Java\jdk1.8.0_201
Start sqldeveloper.exe instead of sqldeveloper64W.exe
New popup will shown and choose java home to new jdk version (32 bit mine) :
C:\Program Files (x86)\Java\jdk1.8.0_201
My fault, I pin sqldeveloper64W.exe to taskbar, why that error occured then after I move cursor and it was sqldeveloper64W.exe, I try to click sqldeveloper.exe, then I found that my setting is goes well.
So check it maybe it was happened on your system too. If sqldeveloper.exe does not working, try to choose sqldeveloper64W.exe.
Now I can call my Connection Identifier which is defined at tnsnames.ora using new setting SQL developer 32 bit mode.

This is because sqldeveloper.conf has an entry for the java home being used
look at this solution

I have followed the steps and it worked just fine.
1) Open the file present at : \sqldeveloper-3.2.20.09.87\sqldeveloper\sqldeveloper\bin\sqldeveloper.conf and delete the line with setJavaHome xxx .
2) Click on Sqldeveloper.exe now and browse for the java.exe present in \sqldeveloper-3.2.20.09.87\sqldeveloper\jdk\jre\bin
3) This should launch SqlDeveloper now.
Thanks.

For Windows Users: If anyone downloaded a non-jre version and faced issue, then later trying with the JRE version and still facing the issue, you need to delete SQLDeveloper folder inside "%AppData%\sqldeveloper". After deleting try opening sqldeveloper.exe again.

This looks like you might not have enough memory allocated to your Windows VM. If the JVM is configured to use more (maximum) memory than is available then you'll get this sort of error message.
You can read more about SQL Developer's memory at (that) Jeff Smith's blog.
The default settings still seem to be -Xms128m -Xmx800m. I can generate a similar error by setting -Xmx to be large than the physical RAM in my (physical) PC. So with the default settings, you will have problems if you don't have 800m of memory allocated to Windows. That doesn't seem like much, but it seems to be in the recommended window based on this knowledgebase article.
While you could attempt to reduce the JVM requirements in your product.conf file that will likely lead to other issues later, if it works at all. So increase your Windows VM memory allocation, reboot, and try to launch SQL Developer again.

Create directory "bin" in
D:\sqldeveloper\jdk\
Copy
msvcr100.dll
from
D:\sqldeveloper\jdk\jre\bin
to
D:\sqldeveloper\jdk\bin

I know that people may frown on a youtube example but this worked for me and I was getting the same issue
https://www.youtube.com/watch?v=ex1dyu0Px8U
It will direct you to add the correct Environmental Variables for the JDK.
System Properties>Advanced>Environment Variables>Path>
\sqldeveloper\jdk\bin
AND
\sqldeveloper\jdk\bin\server

I had the same problem:
The point here is to point on the java.exe binary under Oracle client installation and not the JDK installation under Program Files.

Installing jdk1.8.0_211 and setting the below variable in product.conf (located in C:\Users\\AppData\Roaming\sqldeveloper\19.1.0) to JDK8 home worked for me
SetJavaHome D:\jdk1.8.0_211

I was trying to use the sqldeveloper that comes with the Oracle installation under:
C:\oracle\product\11.2.0\dbhome_1\sqldeveloper
I tried most of the suggestions in this post to no avail, so I downloaded the one from oracle's download page (you must register) which asks for the location of the jdk folder (rather than the location of java.exe). This worked for me without any problems.

I couldn't find the file in C:\Program Files\Java\jdk1.8.0_261\jre\bin. My sqldeveloper came without jre at all so what it worked for me was copying the file from an older Oracle jre release to C:\Program Files\Java\jdk1.8.0_261\jre\bin.

Step 1, go to C:\Users<you>\AppData\Roaming, delete the whole folder [sqldeveloper]
Step 2, click on your shortcut sqldeveloper to start Sql developer
Step 3, the window will popup again to ask for a JRE location, choose a suitable one.
If it still doesn't work, execute again from step 1 to 3, remember to change JRE location every time until it works.

eclipse open error failed to find main class in eclipse\\plugins/org...jar

at the beginning it says that failed to find java jdk or jre so i installed it. then i run it again it came up this.
It says that "Failed to find a Main Class in ... eclipse\\plugins/org.eclipse.equinox.launcher_1.3.0.v20140415-2008.jar"
java file are under
C:\Program Files (x86)\Java\jre1.8.0_31 && jre7
C:\Program Files\Java\jdk1.8.0_31 && jre1.8.0_31
my eclipse file are under
D:\迅雷下载\操作系统\eclipse
can someone tell me how to fix this ??

I was facing the similar issue where on launching eclipse photon it was giving error like:
Failed to find a Main Class in ...
eclipse\\plugins/org.eclipse.equinox.launcher*.jar
One of the reasons in my case was that I had two JDK versions on my system (JDK 6 & JDK 8).
It was running fine but stopped when I updated JAVA_HOME as JDK 6.
To rectify it, I added the below lines in the eclipse.ini file before -vmargs:
-vm
C:/Program Files/Java/jdk1.8.0_111/bin/javaw.exe
-vmargs
Basically, I passed the JDK 8 path to the eclipse as required version for eclipse photon was Java 8. And this got me working.

Try to move eclipse to some simpler path, like D:\development\eclipse

This error is due to because you might have downgraded the version of java in your environmental variables.Try changing the java version in environmental variables and then run the sts or eclipse..for better practice restart the system.hope it helps.!!

I do not mean to steal the first answer - it did help me solve my very similar issue.
I am running Windows 8 x64 bit and installed a modded version of Eclipse in a custom path (rather the default install location that was suggested) - and I got that error.
So, I deleted that Eclipse install. Then installed both x86 and x64 versions of JDK (to their default install locations), and repeated the Eclipse install to the default install location - that solved the problem for me!!!
The reason I installed both JDK versions was because I initially installed only the x64 bit version and a different error came. So I removed that Eclipse again, and repeated the JDK with both versions, etc...

I was on this problem for like an hour and a half not getting that if you save the eclipse file in a non-English named folder it doesn't open.
Hope it helps :)

Check if there are 2 Java paths mentioned in the system Variable "Path"
If yes, Move up the Java path which is mentioned in JAVA_HOME.
For example:
If JAVA_HOME=C:\Program Files\Java\jdk1.8.0_211
then the Path should have same Java version's path
Path=C:\Program Files\Java\jdk1.8.0_211
In my case I just changed the Path from
Path=C:\Program Files\Java\jdk1.6.0_45\bin
To
Path=C:\Program Files\Java\jdk1.8.0_211

Remove Eclipse from Non English folder if any.

This is issue might be because of the folder location or the JDK version,
I installed the latest version JDK and with eclipse-inst-win64 provided by eclipse i was able to install and run successfully

Same thing happens when you change eclipse.exe to a different name, seems like org.eclipse.equinox.launcher_1.3.0.v20140415-2008.jar starts the ide and looks for eclipse.exe

In my case, the Eclipse installer downloaded the wrong VM vertion. I download it separately. Choose it in clause "Java 11+ VM" and it works. Also check you do not have Russian letters in eclipse.ini. If you do, then change the encoding to UTF-8 and write the right letters in Russian.

Android SDK can't find JDK

I know this have been asked many of times before but i've read through all of the answers for this problem yet i haven't been able to solve this issue.
My installer finds the JDK (never had the problem of it not finding it) but after the install process when it want's to download libraries a cmd looking window pops up in the background and a window telling me to add a certain path to the "Path" variable shows up.
I do as it says but still the same problem.
I've tried both x86 and 64x jdk's and jre's but nothing seems to fix this. When i had the x86 jdk installed it couldn't find the jdk and the back-next trick wouldn't fix it.
I've also tried editing the registry like shown in this topic:
Android SDK install problem
but that didn't change anything (also, the changes doesn't appear in the export of the key i make after importing the one with the changes.)
Any help is greatly appreciated as i've tried to install this for months now
Thanks

I was also having this problem but fortunatly I found the answer in this post:
https://stackoverflow.com/questions/4588548/help-jdk-not-detected-problem-during-android-sdk-tools-setup/6051580#6051580
I know it's kinda late, but I hope it helps.

As of July 27th, using:
installer_r22.0.4-windows
jdk-7u25-windows-x64
Some say this problem is solved by replacing the "\" with "/", but that doesn't work. Some say uninstall x64 and install x86: not necessary.
I solved this problem creating the JAVA_HOME variable with the following path:
"C:\Program Files\Java\jdk1.7.0_25"
You have to include the double quotes, but you don't have to include the "bin" directory.

Oddly enough, in relation to Michael Petrotta's comment, including \bin in the JAVA_HOME environment variable will still cause even the latest version (installer_r22.0.5-windows) to fail to detect java.exe
Removing the \bin from the JAVA_HOME variable actually solved the issue on three separate machines I was trying to install the SDK on, and the SDK installed successfully

Had this problem when i typed in C:\Program Files\Java\jdk1.8.0_05\bin for JAVA_HOME environment variable. It should just be C:\Program Files\Java\jdk1.8.0_05 whitout the \bin.
And then the Android SDK installer will prompt you with this message:
Android SDK relies on the Java SE Development Kit (JDK). Java SE
Development Kit (JDK) version 1.8 has been found.
Location: C:\Program Files\Java\jdk1.8.0_05\bin\java.exe

for success must follow this steps:
1: installed you java update v.xx
2: installed you java jdk v.xx same as step 1
3: be sure you don't have other version of older installed if yes unistall
4: start installing your android sdk
5: when install stop to the java can't find go C:\Windows\System32 and find app start with java*
6: delete them in total 3 file
7: back to sdk intall and next
for me worked 1000%

Error! How to install GlassFish in Ubuntu 9.04?

I try to install GlassFish on Ubuntu, and I get the error:
Could not locate a suitable jar
utility. Please ensure that you have
Java 6 or newer installed on your
system and accessible in your PATH or
by setting JAVA_HOME
when I type
echo $PATH
it prints out:
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/opt/jdk1.6.0_20:/opt/jdk1.6.0_20/bin
Where is the problem and how to solve it?
I have also read "Problems installing Java EE SDK on Linux", but it doesn't work.
N.B. Before reinstalling Ubuntu it works fine. This problem comes after reinstallation.

if you follow this tutorial you should be fine and all you problems will be gone:
http://www.nabisoft.com/tutorials/glassfish/installing-glassfish-301-on-ubuntu

The problem is that you have /opt/jdk1.6.0_20 in your PATH and the java executables are located in /opt/jdk1.6.0_20/bin. The best way is to define JAVA_HOME environment variable that contains /opt/jdk1.6.0_20 string and add $JAVA_HOME/bin to PATH variable.

The problem was related to user permissions. I think I tried to install GlassFish without enough rights.