I'm trying to install Java to use Eclipse (I followed all instructions to install Java and Eclipse) but my Eclipse is not starting due to some bad configuration I guess. I can't figure out why it's not working for me.
Eclipse Installation:
Extracted Eclipse at C:\eclipse
Created a shortcut to my desktop having target C:\eclipse\eclipse.exe
When I try to run Eclipse with this shortcut, I see following Eclipse splash screen for a second and it disappears. Eclipse does not start at all.
JAVA Installation:
Installed JDK at C:\Program Files\Java\jdk1.7.0_10
Installed JRE at C:\Program Files\Java\jre7
Environment Variables Configuration:
JAVA_HOME = C:\Program Files\Java\jdk1.7.0_10
PATH = C:\Program Files\Java\jdk1.7.0_10\bin;
I tested my Java installation using the console and figured out this issue but I don't know how to fix it, and I guess this is causing Eclipse not to start.
Problem:
Go to Eclipse folder, locate eclipse.ini file, add following entry (before -vmargs if present):
-vm
C:\Program Files\Java\jdk1.7.0_10\bin\javaw.exe
Save file and execute eclipse.exe.
please try to execute java from
C:\Program Files\Java\jdk1.7.0_10\bin
i.e from the location where java is installed.
If it is successful, it means that the error lies somewhere in the classpath.
Also, this guy seems to have had the same problem as yours, check it out
Check that downloaded eclipse/JDK/JRE is compatible with your processor/OS architecture that is are they 32bit or 64bit?
Not able to run Appium {“message”:”A new session could not be created. (Original error: ‘java -version’ failed
I used Jdk 1.8 and JRE 1.8, Classpath is also set properly but I observed that Java command gives Error to initialization of VM (java/lang/NoClassDefFoundError: java/lang/Object)
Solution:
Uninstalled JRE and JDK completely
Installed JRE 1.8 then
Installed JDK 1.8
Set Classpath
check Java command works or not and its working
also able to execute the Appium program thru Eclipse Kepler Service Release 2 with JDK1.8 support
I had the same error in my case was when I needed to update jdk 7 to jdk 8, and my bad was just I installed jdk8 and I never installed jre8, only that, the error was solved immediately when I installed jre8.
Try placing the desired java directory in PATH before not needed java directories in your PATH.
I had the same issue on Windows 7 and I had to install both JDK and JRE and it's a success.
I faced the same problem,Eclipse splash screen for a second and it disappears.Then i noticed due to auto update of java there are two java version installed in my system. when i uninstalled one eclipse started working.
Thanks you..
I've observed this with STS and Eclipse and running java from CMD too on Windows 7/8/10 and following was my simple solution:
Actually, when I installed JDK 8 and STS/Eclipse it created one directory i.e. C:\ProgramData\Oracle\Java\javapath with the following files:
C:\ProgramData\Oracle\Java\javapath\java.exe
C:\ProgramData\Oracle\Java\javapath\javaw.exe
C:\ProgramData\Oracle\Java\javapath\javaws.exe
Along with that, it appended Path Environment variable of System with this location C:\ProgramData\Oracle\Java\javapath
I've just removed above entry from Path Environment variable of System and added the location of the actual JDK instead i.e. C:\Program Files\Java\jdk1.8.0_131\bin
Now that is not necessary to add that -vm option in eclipse.ini or
SpringToolSuite4.ini either.
I just spent about 1 hour to figure out possible solution for the same error.
So what I did under MS WIndows 7 is following
Uninstall all Java packages of all versions.
Download last packages Java SE or JRE for your 32 or 64 Windows and install it.
First install JRE and second is Java SE.
Open text editor and paste this code.
public class Hello {
public static void main(String[] args) {
System.out.println("test");
}
}
Save it like Hello.java
Go to Console and compile it like
javac Hello.java
Execute the code like
java Hello
Should be no error.
sometime you missed some file like I missed my one file rt.java
so better to check yours .........
C:\Program Files\Java\jdk1.8.0_112\jre\lib
0
I just spent about 1 hour to figure out possible solution for the
same error.
So what I did under MS WIndows 7 is following
Uninstall all Java packages of all versions.
Download last packages Java SE or JRE for your 32 or 64 Windows and
install it.
First install JRE and second is Java SE.
List item
Below error is thrown when there are multiple versions of jdk on your machine:
error occurred during initialization of VM
java/lang/NoClassDefFoundError: java/lang/Object
so for this Just use below:
set PATH="JDK bin path" in cmd
I had a same issuse, my file location was in D-drive, and then i shifted to the c-Drive and it works.
Related
I am using javadoc doclets with gradle, so I need to use the package tools.jar, which is in the lib folder from the jdk (1.6.0_26 in my case).
The point is that gradle does not take it automatically, so I was adding that tools package to my libs folder, and then adding it to dependencies.gradle .
Now I want to take it directly from my JDK home into my dependencies.gradle. Is there a way to do that? I have tried the next in my dependencies.gradle:
compile files("${System.properties['java.home']}/lib/tools.jar")
But it does not find it while compiling.
I had this problem when I was trying to run commands through CLI.
It was a problem with system looking at the JRE folder i.e.
D:\Program Files\Java\jre8\bin. If we look in there, there is no Tools.jar, hence the error.
You need to find where the JDK is, in my case: D:\Program Files\Java\jdk1.8.0_11, and if you look in the lib directory, you will see Tools.jar.
What I did I created a new environment variable JAVA_HOME:
And then you need to edit your PATH variable to include JAVA_HOME, i.e. %JAVA_HOME%/bin;
Re-open command prompt and should run.
Found it. System property 'java.home' is not JAVA_HOME environment variable. JAVA_HOME points to the JDK, while java.home points to the JRE. See that page for more info.
Soo... My problem was that my startpoint was the jre folder (C:\jdk1.6.0_26\jre) and not the jdk folder (C:\jdk1.6.0_26) as I thought(tools.jar is on the C:\jdk1.6.0_26\lib folder ). The compile line in dependencies.gradle should be:
compile files("${System.properties['java.home']}/../lib/tools.jar")
I got the same error using Eclipse trying to execute a Gradle Task. Every time I run a command (i.e. war) the process threw an exception like:
Could not find tools.jar. Please check that C:\Program Files\Java\Jre8" is a valid JDK install.
I tried the solution listed in this post but none of them solved this issue. Here my solution :
Go to the "Gradle Task" view
Right Click on the task you want to execute
Select Open Gradle Run Configuration
In the tab "Java Home" select your local JDK repository then click OK
Run again, Enjoy!
I just added a gradle.properties file with the following content:
org.gradle.java.home=C:\\Program Files\\Java\\jdk1.8.0_45
I had a similar case using Ubuntu. The machine had only the JRE installed. So, I just executed the command below to install the JDK.
sudo apt install openjdk-8-jdk
In macOS Big Sur
The issue happens because of the environment variable JAVA_HOME is not correctly set in macOS Big Sur.
Step 1 - Confirm that you have issue with JAVA_HOME by printing its value in the terminal. You will most likely get an empty string.
echo $JAVA_HOME
Step 2 - Find the correct path on your machine
/usr/libexec/java_home -V
Copy that path associated with "Java SE 8" which usually looks like /Library/Java/JavaVirtualMachines/jdk1.8.0_202.jdk/Contents/Home
Step 3 - Edit .zshenv using nano
nano ~/.zshenv
Step 4 - Add the path from step 2 to the file as follows
export JAVA_HOME=YOUR_JAVA_PATH
example:
export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_202.jdk/Contents/Home
Step 5 - Source the updated .zshenv file to activate the environment variable
source ~/.zshenv
Step 6 - Print to confirm the path
echo $JAVA_HOME
I was struggling as well for this Solution. Found a better way to it with Gradle as described here.
We can get the JVM/JDK information from Gradle itself.
dependencies {
runtime files(org.gradle.internal.jvm.Jvm.current().toolsJar)
}
So simple.
In CentOS7 the development package will install tools.jar. The file is not present in java-1.8.0-openjdk
sudo yum install java-1.8.0-openjdk-devel
Add this to gradle.properties:
org.gradle.java.home=C:\Program Files\Java\jdk1.8.0_91
My solution on Mac:
add this line to gradle.properties:
org.gradle.java.home=/Library/Java/JavaVirtualMachines/jdk1.8.0_271.jdk/Contents/Home
not this one:
org.gradle.java.home=/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home
you can open the last home directory and will find that there is no lib/tools.jar file existence, so change the path to JavaVirtualMachines/jdk1.8.0_271.jdk and it works for me.
By the way, in the terminal, I echo the $JAVA_HOME and it gets the first path, not the second one, I think this is why my Gradle cannot work properly.
With Centos 7, I have found that only JDK has tools.jar, while JRE has not. I have installed the Java 8 JRE(yum install java-1.8.0-openjdk), but not the JDK(yum install java-1.8.0-openjdk-devel).
Installing the latter solves the problem. Also, remember to set JAVA_HOME.
It may be two years too late, but I ran into the same problem recently and this is the solution I ended up with after finding this post:
import javax.tools.ToolProvider
dependencies {
compile (
files(((URLClassLoader) ToolProvider.getSystemToolClassLoader()).getURLs()),
...
}
}
It should work if java.home points to a directory that's not under the JDK directory and even on Mac OS where you'd have classes.jar instead of tools.jar.
On windows 10, I encounter the same problem and this how I fixed the issue;
Access Advance System Settings>Environment Variables>System
Variables
Select PATH overwrite the default
C:\ProgramData\Oracle\Java\javapath
With your own jdk installation that is JAVA_HOME=C:\Program Files\Java\jdk1.8.0_162
On my system (Win 10, JRE 1.8.0, Android Studio 3.1.2, Gradle 4.1) there is no tools.jar in the JRE directory (C:\Program Files\Java\jre1.8.0_171).
However, I found it in C:\Program Files\Android\Android Studio\jre\lib and tried setting JAVA_HOME=C:\Program Files\Android\Android Studio\jre
That works (for me)!
What solved it for me was the following:
found tools.jar in C:\Program Files\Android\Android Studio\jre\lib
copy paste to C:\Program Files (x86)\Java\jre1.8.0_271\lib
ran the code again and it worked.
If you use terminal to build and you have this error you can point to jdk bundled with android studio in your gradle.properties file:
org.gradle.java.home=/usr/local/android-studio/jre
Linux
Open /etc/environment in any text editor like nano or gedit and add the following line:
JAVA_HOME="/usr/lib/jvm/open-jdk"
Windows
Start the System Control Panel applet (Start - Settings - Control
Panel - System).
Select the Advanced tab.
Click the Environment
Variables button.
Under System Variables, click add button, then past the following lines:
in Variable Name : JAVA_HOME
in Variable Value : C:\Program Files\Java\jdk1.x.x_xxx
where x.x_xxx jdk version you can get your jdk version from here C:\Program Files\Java
Under System Variables, select Path, then click Edit,then click new button then past the following line:
%JAVA_HOME%/bin;
This worked for me:
I was getting message
Execution failed for task ':app:compileDebugJavaWithJavac'.
Could not find tools.jar. Please check that C:\Program Files\Java\jre1.8.0_121 contains a valid JDK installation.
In Android Studio, check your SDK Location.
File, Project Structure, SDK Location, JDK Location.
Example: C:\android-studio\android-studio\jre
Copy the tools.jar file in the C:\android-studio\android-studio\jre\lib folder into the C:\Program Files\Java\jre1.8.0_121\lib folder.
Retry.
Like other answers I set org.gradle.java.home property in gradle.properties file. But path with \ separators did not work (building on windows 10):
Java home supplied via 'org.gradle.java.home' is invalid. Invalid
directory: C:Program FilesJavajdk1.8.0_65
So instead of
org.gradle.java.home=C:\Program Files\Java\jdk1.8.0_65
i had to use
org.gradle.java.home=C:/Program Files/Java/jdk1.8.0_65
then the build was successful
Problem is that project is build with JRE instead of JDK and since I was building it from eclipse this also worked:
In Window>Preferences>Gradle>Arguments specify Workspace JRE and specify your JDK.
In Window>Preferences>Java>InstalledJREs specify your JDK as default
In my case (Windows 10) after Java update I lost my Enviroment Variables, so I fixed added the variables again, based in the following steps https://confluence.atlassian.com/doc/setting-the-java_home-variable-in-windows-8895.html
I solved problem on this way:
download file tools-1.8.0.jar on http://www.java2s.com/Code/Jar/t/Downloadtools180jar.htm
unzip file and rename to tools.jar
copy to C:\Program Files\Java\jre1.8.0_191\lib folder
Retry
Put in gradle.properties file the following code line:
org.gradle.java.home=C:\\Program Files\\Java\\jdk1.8.0_45
Example image
Use this with modern versions of gradle:
def compiler = javaToolchains.compilerFor { languageVersion = JavaLanguageVersion.of(java.sourceCompatibility.majorVersion) }.get()
implementation compiler.metadata.installationPath.files('lib/tools.jar')
Did you make sure that tools.jar made it on the compile class path? Maybe the path is incorrect.
task debug << {
configurations.compile.each { println it }
}
Adding JDK path through JAVA_HOME tab in "Open Gradle Run Configuration" will solve the problem.
Could not find tools.jar
MacOS
echo export "JAVA_HOME=\$(/usr/libexec/java_home)" >> ~/.bash_profile
And restart Shell
I've tried most of the top options but it seems that I had something wrong with my environment setup so they didn't help. What solved the issue for me was to re-install jdk1.8.0_201 and jre1.8.0_201 and this solved the error for me. Hope that helps someone.
For me this error ocurred after trying to use audioplayers flutter library.
To solve i got tools.jar of the folder:
C:\Program Files\Android\Android Studio\jre\lib
and pasted on
C:\Program Files\Java\jre1.8.0_181\lib.
After this the build worked fine.
My Android Studio Version: 4.2.1
The "tools.jar" is provided by Oracle JDK which is required by android studio for compilation - I have faced this issue after updating android studio to latest version in my PC.
To Resolve the issue follow below steps:
In Android studio File -> Project Structure -> SDKs (Under Platform Settings)
A) Add JDK path by pressing '+' symbol in middle pane if suppose JDK/JDK home path is not present in the middle pane already (Middle pane also contains the Downloaded Android SDK's)
B) Java sdk will be usually present/installed in the path 64 bit => "C:\Program Files\Java\jdk1.X.Y_ABC" (In my PC it is 1.8.0_202) or 32 bit => "C:\Program Files (x86)\Java\jdk1.X.Y_ABC"
If suppose you don't have JDK installed in your PC,
please download and install from Oracle Java website
https://www.oracle.com/java/technologies/javase/javase-jdk8-downloads.html
Set JDK and JRE Path(Download both from webpage mentioned in step 2) in system environment variable
A) Press windows key type "Edit the system environment variables" and open the application
B) Go to Advanced -> Environment Variables Under system variables add JAVA_HOME and JRE_HOME as below
Set Windows system environment variable
Add jdk lib path on the Path environment variable under user variables (this step is required only if the error not resolves with the previous steps)
C:\Program Files\Java\jdk1.X.Y_ABC\lib
For Windows add JDK home path to the Gradle property file as org.gradle.java.home.
If you don't have gradle.properties file then create a new one and add
Ex: org.gradle.java.home=C:\Program Files\Java\jdk1.8.0_241
I have downloaded and installed the iReport 4.5 using te Windows installer. But when I try to start the iReport it shows the splash screen but does not start.
My JRE version is 8.
There's another way if you don't want to have older Java versions installed you can do the following:
1) Download the iReport-5.6.0.zip from https://sourceforge.net/projects/ireport/files/iReport/iReport-5.6.0/
2) Download jre-7u67-windows-x64.tar.gz (the one packed in a tar) from https://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase7-521261.html
3) Extract the iReport and in the extracted folder that contains the bin and etc folders throw in the jre. For example if you unpack twice the jre-7u67-windows-x64.tar.gz you end up with a folder named jre1.7.0_67. Put that folder in the iReport-5.6.0 directory:
and then go into the etc folder and edit the file ireport.conf and add the following line into it:
For Windows
jdkhome=".\jre1.7.0_67"
For Linux
jdkhome="./jre1.7.0_67"
Note : jre version may change! according to your download of 1.7
now if you run the ireport_w.exe from the bin folder in the iReport directory it should load just fine.
don't uninstall anything. a system with multiple versions of java works just fine. and you don't need to update your environment varables (e.g. java_home, path, etc..).
yes, ireports 3.6.1 needs java 7 (doesn't work with java 8).
all you have to do is edit C:\Program Files\Jaspersoft\iReport-nb-3.6.1\etc\ireport.conf:
# default location of JDK/JRE, can be overridden by using --jdkhome <dir> switch
jdkhome="C:/Program Files/Java/jdk1.7.0_45"
on linux (no spaces and standard file paths) its that much easier. keep your java 8 for other interesting projects...
iReport does not work with java 8.
if not yet installed, download and install java 7
find the install dir of your iReport and open the file: ireport.conf
(you will find it here: iReport-x.x.x\etc\ )
change this line:
#jdkhome="/path/to/jdk"
to this (if not this is your java 7 install dir then replace the parameter value between ""s with your installed java 7's path):
jdkhome="C:\Program Files\Java\jdk1.7.0_67"
While ireport does not officially support java8, there is a fairly simple way to make ireport (tested with ireport 5.1) work with Java 8. The problem is actually in netbeans. There is a very simple patch, assuming you don't care about the improved security in Java 8:
http://hg.netbeans.org/jet-main/diff/3238e03c676f/openide.util/src/org/openide/util/WeakListenerImpl.java
I didn't even use the exact netbeans source used by ireport. I just downloaded the latest WeakListenerImpl.java in full from the above repository, and compiled it in the ireport directory with platform9/lib/org-openide-util.jar in the compiler classpath
cd blah/blah/iReport-5.1.0
wget http://hg.netbeans.org/jet-main/raw-file/3238e03c676f/openide.util/src/org/openide/util/WeakListenerImpl.java
javac -d . -cp platform9/lib/org-openide-util.jar WeakListenerImpl.java
zip -r platform9/lib/org-openide-util.jar org
I am avoiding running eclipse just to edit jasper reports as long as I can. The netbeans based ireport is so much lighter weight. Running Eclipse is like using emacs.
I fixed this on my PC,
on my environment
iReport was iReport-5.1.0 ,
both jdk 7 and jdk 8 had been installed.
but iReport did not load
fix:-
1. Find the iReport.conf
//C:\Program Files (x86)\Jaspersoft\iReport-5.1.0\etc
Open it on text editor
copy your jdk installation path
//C:\Program Files (x86)\Java\jdk1.8.0_60
add jdkhome= into the ireport.conf file
jdkhome="C:/Program Files (x86)/Java/jdk1.8.0_60"
Now iReport will work
It works only with JRE 1.7
just download it and extract to your prefered location
and use the following command to open the iReport
ireport --jdkhome Path To JDK Home
With ireport 4.7.1, after setting jdkhome in etc/ireport.conf, ireport.exe doesn't start. No splash, no window.
When I launch ireport_w.exe in a cmd, I get this message:
Error occurred during initialization of VM
Could not reserve enough space for object heap
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
Solution:
In file etc/ireport.conf, on the line starting with default_options, I have reduced the value of -J-XX:MaxPermSize to 256m instead of 512m
default_options="--branding ireport -J-Xms256m -J-Xmx512m
-J-Dorg.netbeans.ProxyClassLoader.level=1000 -J-XX:MaxPermSize=256m"
I have installed IReport 5.6 with Java 7: not working
I tried to install Java 6 and added the path to "ireport.conf" file like the attached screenshot and it worked fine :D
So the steps is :
Install IReport 5.6
Install JDK 6
Edit "ireport.conf" file like the below image and Enjoy ;)
I was tired of searching on google how to run iReport with java 8.
I did everything as said on the Internet,But I don't know why they weren't work for me.
Then I Change My Computer JDK Current Version form 1.8 to 1.7 Using Registry Editor.
Now it work fine.
To Change Current Version
Start => Type regedit (Press Enter) => HKEY_LOCAL_MACHINE => SOFTWARE =>
JavaSoft => Java Development Kit => Change Key Value of CurrentVersion From 1.8 to 1.7
For me, the combination of Stuart Gathman's and Raviath's answer in this thread did the trick in Windows Server 2016 for iReport 5.6.0.
In addition, I added a symlink within C:\program files\java\jre7 to jdk8 like this:
cmd /c mklink /d "C:\program files\java\jre7\bin" "C:\Program Files\Java\jdk1.8.0_181\bin"
because iReport was constantly complaining that it could not find java.exe within C:\program files\java\jre7\bin\ - So I served it the available java.exe (in my case V8.181) under the desired path and it swallowed it gladly.
I have downloaded and installed the iReport 4.5 using te Windows installer. But when I try to start the iReport it shows the splash screen but does not start.
My JRE version is 8.
There's another way if you don't want to have older Java versions installed you can do the following:
1) Download the iReport-5.6.0.zip from https://sourceforge.net/projects/ireport/files/iReport/iReport-5.6.0/
2) Download jre-7u67-windows-x64.tar.gz (the one packed in a tar) from https://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase7-521261.html
3) Extract the iReport and in the extracted folder that contains the bin and etc folders throw in the jre. For example if you unpack twice the jre-7u67-windows-x64.tar.gz you end up with a folder named jre1.7.0_67. Put that folder in the iReport-5.6.0 directory:
and then go into the etc folder and edit the file ireport.conf and add the following line into it:
For Windows
jdkhome=".\jre1.7.0_67"
For Linux
jdkhome="./jre1.7.0_67"
Note : jre version may change! according to your download of 1.7
now if you run the ireport_w.exe from the bin folder in the iReport directory it should load just fine.
don't uninstall anything. a system with multiple versions of java works just fine. and you don't need to update your environment varables (e.g. java_home, path, etc..).
yes, ireports 3.6.1 needs java 7 (doesn't work with java 8).
all you have to do is edit C:\Program Files\Jaspersoft\iReport-nb-3.6.1\etc\ireport.conf:
# default location of JDK/JRE, can be overridden by using --jdkhome <dir> switch
jdkhome="C:/Program Files/Java/jdk1.7.0_45"
on linux (no spaces and standard file paths) its that much easier. keep your java 8 for other interesting projects...
iReport does not work with java 8.
if not yet installed, download and install java 7
find the install dir of your iReport and open the file: ireport.conf
(you will find it here: iReport-x.x.x\etc\ )
change this line:
#jdkhome="/path/to/jdk"
to this (if not this is your java 7 install dir then replace the parameter value between ""s with your installed java 7's path):
jdkhome="C:\Program Files\Java\jdk1.7.0_67"
While ireport does not officially support java8, there is a fairly simple way to make ireport (tested with ireport 5.1) work with Java 8. The problem is actually in netbeans. There is a very simple patch, assuming you don't care about the improved security in Java 8:
http://hg.netbeans.org/jet-main/diff/3238e03c676f/openide.util/src/org/openide/util/WeakListenerImpl.java
I didn't even use the exact netbeans source used by ireport. I just downloaded the latest WeakListenerImpl.java in full from the above repository, and compiled it in the ireport directory with platform9/lib/org-openide-util.jar in the compiler classpath
cd blah/blah/iReport-5.1.0
wget http://hg.netbeans.org/jet-main/raw-file/3238e03c676f/openide.util/src/org/openide/util/WeakListenerImpl.java
javac -d . -cp platform9/lib/org-openide-util.jar WeakListenerImpl.java
zip -r platform9/lib/org-openide-util.jar org
I am avoiding running eclipse just to edit jasper reports as long as I can. The netbeans based ireport is so much lighter weight. Running Eclipse is like using emacs.
I fixed this on my PC,
on my environment
iReport was iReport-5.1.0 ,
both jdk 7 and jdk 8 had been installed.
but iReport did not load
fix:-
1. Find the iReport.conf
//C:\Program Files (x86)\Jaspersoft\iReport-5.1.0\etc
Open it on text editor
copy your jdk installation path
//C:\Program Files (x86)\Java\jdk1.8.0_60
add jdkhome= into the ireport.conf file
jdkhome="C:/Program Files (x86)/Java/jdk1.8.0_60"
Now iReport will work
It works only with JRE 1.7
just download it and extract to your prefered location
and use the following command to open the iReport
ireport --jdkhome Path To JDK Home
With ireport 4.7.1, after setting jdkhome in etc/ireport.conf, ireport.exe doesn't start. No splash, no window.
When I launch ireport_w.exe in a cmd, I get this message:
Error occurred during initialization of VM
Could not reserve enough space for object heap
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.
Solution:
In file etc/ireport.conf, on the line starting with default_options, I have reduced the value of -J-XX:MaxPermSize to 256m instead of 512m
default_options="--branding ireport -J-Xms256m -J-Xmx512m
-J-Dorg.netbeans.ProxyClassLoader.level=1000 -J-XX:MaxPermSize=256m"
I have installed IReport 5.6 with Java 7: not working
I tried to install Java 6 and added the path to "ireport.conf" file like the attached screenshot and it worked fine :D
So the steps is :
Install IReport 5.6
Install JDK 6
Edit "ireport.conf" file like the below image and Enjoy ;)
I was tired of searching on google how to run iReport with java 8.
I did everything as said on the Internet,But I don't know why they weren't work for me.
Then I Change My Computer JDK Current Version form 1.8 to 1.7 Using Registry Editor.
Now it work fine.
To Change Current Version
Start => Type regedit (Press Enter) => HKEY_LOCAL_MACHINE => SOFTWARE =>
JavaSoft => Java Development Kit => Change Key Value of CurrentVersion From 1.8 to 1.7
For me, the combination of Stuart Gathman's and Raviath's answer in this thread did the trick in Windows Server 2016 for iReport 5.6.0.
In addition, I added a symlink within C:\program files\java\jre7 to jdk8 like this:
cmd /c mklink /d "C:\program files\java\jre7\bin" "C:\Program Files\Java\jdk1.8.0_181\bin"
because iReport was constantly complaining that it could not find java.exe within C:\program files\java\jre7\bin\ - So I served it the available java.exe (in my case V8.181) under the desired path and it swallowed it gladly.
I am trying to build jasperserver on linux. It uses ant and maven. While executing the ant command it gives this exception. I checked on the same path however the lib folder is not there at the same path. How can I resolve this issue?
Thanks!!
tools.jar is present only in jdk, not jre.
I have fixed this issue by installing jdk..
Thanks to all for reply ..
I saw the same message running Ant after a JVM update. I fixed it by setting JAVA_HOME to JDK.
It could be that your eclipse is defaulting to your 32bit version of your jre. If you do everything right with JAVA_HOME set to C:\Program Files\Java\jdk1.6.0_21\bin and your running a 32bit version of eclipse you'll end up using something like C:\Program Files (x86)\Java\jre6\bin.
once you fix your jdk issue You will need to pass it on the end of a shortcut -vm "C:\Program Files (x86)\Java\jdk1.6.0_31\bin"
Or fix your JAVA_HOME
Other suggestions have been to make sure your eclipse is using the jdk not jre http://gamefromscratch.com/post/2011/11/15/Telling-Eclipse-to-use-the-JDK-instead-of-JRE.aspx
Just for others reference:By default eclipse will point to jre not jdk. if you want to change default jre please got to
window -> Preferences -> Java -> Installed JREs
click on add button select Standanrd VM then set JRE home.
here you can provide your installed jdk path it will look like below in case of windows.
C:\Program Files\Java\jdk1.8.0_101
Is there a way to prevent that the Java installation routine (e.g. jdk-7u1-windows-i586.exe) copies java.exe into C:\Windows\system32 directory?
I have to install my software on a client's laptop and I don't want to break other Java applications which are already installed on the machine. In other words I want to install a private JRE which is only used by my software.
By now, I copied an already installed JRE from my computer to the client's machine.
I discovered yesterday that there is a problem with Java versions on Windows, as you know keeping java up to date these days is critical, especially the JRE used by Internet explorer located in the Windows system32 or syswow64 folder.
You can perform a search for java in your C: drive and look at the various executable files it finds to determine if the situation applies on a specific system.
After doing some research I find that when the Java updater runs, it only updates the files installed in the JAVA home , usually located on the program files, but it does NOT update the files located in the windows system folder. As a result and since the system folder is in the default system PATH , the usage of Internet Explorer continues to use an old version of the JAVA files ( java.exe , javaw.exe , javaws.exe )
The solution is to uninstall java using the control panel uninstall programs feature, download most recent version and install again.
Cheers!
Fernando
I recently upgraded to java 8 and discovered this problem as the java version under system32 was still java 7. It stops you even running version as it complains about the registry keys
U:\>java -version
Error: Registry key 'Software\JavaSoft\Java Runtime Environment'\CurrentVersion'
has value '1.8', but '1.7' is required.
Error: could not find java.dll
Error: Could not find Java SE Runtime Environment.
Doing the following pointed me to the culprit:
U:\>where java
C:\Windows\System32\java.exe
C:\Program Files\Java\jdk1.8.0_45\bin\java.exe
I 'solved' this problem by just deleting the java under system32! I'm unsure of what consequences this will have.
You can just provide the JRE you want to use on your software and:
Set the JAVA_HOME variable before you run your application
Point to the correct java.exe file (e.g. ..\jre1.5.0_22\bin\java <your_java_main>)
This can be done in a *.bat file for example.
After running the *.bat file you created, all other java version will be ignored and it won't matter which versions are, or will be, installed on that pc.
I found the newest JDK still doesn't write correct code against registry.
The issue is if a computer doesn't have JRE, JDK doesn't register JRE in registry correctly.
For those install JDK 1.7u72 Just add Software\JavaSoft\Java Runtime Environment as the error message indicate. And add a string entry of CurrentVersion with value 1.7.
And then add Software\JavaSoft\Java Runtime Environment\1.7 and put a JavaHome string entry with value "C:\Program Files\Java\jre7". And JRE will function correctly.
Blame Oracle, if you use Registry, then write correct code, otherwise don't use the Registry!
All you have to do is go to Control Panel -> Programs Uninstall a program. Uninstall the old java updates and keep the newest java update and java development kit update. Your newest java update and java development kit update should have the same number.
Windows 10 Solution
Check Java Version in Console (CMD) with java -version
Check in Console (CMD) with where java, which Java Path's are enlisted.
If it you shows you "C:\Windows\System32" in its output, you will have a problem to get to your %JAVA_HOME%, where your wanted Java version resides.
Meaning, you need to get rid of "java.exe" in "C:\Windows\System32".
Just uninstall the JRE in the Software ("Programs and Features")
Hint: Keep in mind, do NOT the JDK, here in my case "Java SE Development Kit 8 Update (64-bit)"), but the JRE.
One way I would try would be to create a write-only empty file with the name java.exe into the System32 folder.