I am learning Java and I had unintall old version and install new
I can not open eclipse,
After I click on eclipse I see following error:
A Java Runtime Environment (JRE) or Java Development Kit (JDK) must be available in order to run Eclipse. No Java Virtual Machine was found after searching the following locations:
C:\Program Files \Java\jdk-15\bin/javaw.exe
I have downloaded "eclipse-jee-juno-SR1-linux-gtk-x86_64.tar.gz" from www.eclipse.org for linux-64 bit OS.
When i tried to run the installer, by double clicking on it. It showed the error
"A Java Runtime Environment (JRE) or Java Development Kit (JDK) must be available in order to run Eclipse. No Java Virtual Machine was found after searching the following locations:
/home/shubham14/Downloads/Softwares/eclipse-jee-juno-SR1-linux-gtk-v86_64/eclipse/jre/bin/java
java in your current path."
I dont understand why this error has occured since i have jdk 14 already installed and its path is also set.
I get an error trying to install Eclipse 4.7 (Oxygen) Oracle Corporation using the installer program, eclipse-inst-win64.exe Am I missing a system variable? Am I missing a prerequisite? This computer is locked down pretty tight. However I am installing by running as an administer.
First I installed the Oracle JDK 8.162 64-bit - No problems
Then I ran the eclipse-inst-win64.exe installer and quickly got the following error:
The Eclipse Installer executable launcher was unable to locate its companion shared library.
I thought this could be just that the program did not know where the JDK was installed. The JDK installer does not set any environment variables except for adding the path to the JDK to the PATH variable. So I searched StackOverflow for a list of JDK variables to add. I added the following new system variables:
CLASSPATH = .;%JAVA_HOME%\lib;%JAVA_HOME%\jre\lib
JAVA_HOME = C:\Program Files\Java\jdk1.8.0_162
JAVA_TOOL_OPTIONS = -Dfile.encoding="UTF-8"
JDK_HOME = %JAVA_HOME%
JRE_HOME = %JAVA_HOME%\jre
I modified the Path variable to put the bin directory first:
PATH = %JAVA_HOME%\bin;C:\windows\system32;C:\windows… rest of the existing path variable
I ran the eclipse-inst-win64.exe installer again and got the same error:
I rebooted but still got this error.
I tried to "run as administrator" but got the same error.
Some people suggest that the path can get too long with the default installation directory so I tried installing the JDK in C:\JDK\ but still got the same problem.
Java seems to be installed properly:
H:>java -version
java version "1.8.0_162"
Java(TM) SE Runtime Environment (build 1.8.0_162-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.162-b12, mixed mode)
I still assume that I made a mistake with my system variables or my JDK installation.
I assumed the "companion shared library" was inside the JDK installation. I extracted the installation files to another directory (C:\eclipse) and then it ran. The "companion shared library" must have been inside the zipped installer. I fixated on the idea that the problem had to be a failure to connect to the JDK that I did not consider any other possibilities. It is installed now.
I extracted ADT and when I'm trying to run eclipse get a error,
"A Java Runtime Environment (JRE) or Java Devolpment Kit (JDK)
must be available in order to run Eclipse. No Java virtual machine
was found after searching the following location:
C:\Development\adt-bundle-windows-x86_64-20140702\eclipse\jre\bin\javaw.exe
javaw.exe in your current PATH"
I've installed JDK 7, but still not working. how do I fix this?
When I open adt-bundle-windows-x86_64-20131030 and click on the Eclipse.exe application to install it I get the message; A Java Runtime Environment (JRE) or Java Development Kit (JDK) must be available in order to run Eclipse. No Java Virtual Machine was found after searching the following locations: C:\users\username\desktop\development\adt-bundle-windows-x86_64-20131030\eclipse\jre\bin\javaw.exe
javaw.exe is your current PATH.
I do have JDK, and JRE on this computer, I need them to view the emulator for my job. I have tried uninstalling and reinstalling Java with the same results. What can I do to fix this problem?
You will have to put Java in your classpath, so Eclipse knows where it can find Java. See here: http://docs.oracle.com/javase/tutorial/essential/environment/paths.html for info on how to do this.
install 32 bit version of jdk from oracle website
put the path of your java bin directory under Environment variables.
System->Advanced System Settings->Environment Variables->path
Open command prompt. use java and javac commands to know if you have successfully installed java and compiler.
if it doesn't help, this question has a lot of helpful answers
Eclipse - no Java (JRE) / (JDK) ... no virtual machine
From what you said:
"'java' is not recognized as an internal or external command, operable program or batch file"
Your java may not have been installed correctly, or, it was installed, but you did not set path to it correctly. It is not a problem with ADT, any of your programs that need Java will not be able to find it.