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Android Emulator won't boot or start. Nothing is popping up

This question is already many times asked but nothing its like my problem.
I don't get it why its not booting up or starting my apk.
Its stuck right there. Nothing is happening just the waiting for target device respond is coming up.
Everything worked perfectly until now.
I even reinstalled it. Didn't help much
PC SPECS:
i7 Core 2.2 GHZ
16GB RAM
Intel Iris Pro 1500MB
Android Studio 2.3
Error while waiting for device: Timed out after 300seconds waiting for emulator to come online.
Still the same error.....

I got it to work with changing the auto graphics to software!

I ran the commands that Jamal Eason recommended in the comments:
$ cd Android/Sdk/emulator
$ ./emulator -list-avds
$ ./emulator -avd [AVD_NAME]
I got some libGL error: unable to load driver: i965_dri.so errors when trying to run the AVD.
I was able to find this thread, where a user was able to fix a very similar issue by renaming the libstdc++.so.6 inside the emulator directory and linking the libstdc++.so.6 from the /usr/ directory.
$ cd Android/Sdk/emulator/lib64/libstdc++
$ mv libstdc++.so.6 libstdc++.so.6.bak
$ ln -s /usr/lib64/libstdc++.so.6 /home/user/Android/Sdk/emulator/lib64/libstdc++

I wasted some time with the same problem, for me after all, the solution was to power off my vagrant machine, this means that if you have a virtual machine running, is not allowing the AVD to run. So if that's the case, just power off the VM's and try again.
Hope this helps :).

I was experiencing the same exact issue, so I ran the commands suggested by Jamal Eason, and I got the following error.
PANIC: Cannot find AVD system path. Please define ANDROID_SDK_ROOT
Did some looking around and found that actually my ANDROID_HOME environment variable was pointing to the incorrect location. So I added the following commands to my ~/.bash_profile to update the ANDROID_HOME variable to point to my Android directory, which for me looked like the following.
export ANDROID_HOME=/Users/{USER_NAME}/.android/
export PATH=$PATH:$ANDROID_HOME/tools:$ANDROID_HOME/platform-tools
See this Stack Overflow post for more information on updating the environment variable.
After that, I restarted Android Studio and was able to run my emulator as normal.

Free more space on your disk. The problem may be related to the space left on your hard disk.

try to use another emulator like Genymotion or BlueStacks
and run it manually before runnig your app

I had this issue after manually moving Android SDK to another disk to save disk space on C:\ and improperly setting ANDROID_SDK_HOME.
I set ANDROID_SDK_HOME to d:\stuff\android\.android\ whereas it should have been d:\stuff\android\.
Apart from that, since Android machinery was creating another .android inside .android so I moved its contents one folder up.

Only running emulators that were x86 worked for me.
(I also edited the emulator settings for that device and selected "automatic" for graphics driver and selected a device as it appeared to be uninitialised).
Also check out the obvious: Google's page on it

JDK 7 Update 80 installation issue "A semi-colon found in selected path"

I'm trying to install JDK 7 on a Windows 7 machine and constantly getting the error "A semi-colon found in selected path" no matter what path I select for the installation.
Tried with different updates of JDK and it didn't help either.
EDIT: Installation log shows the following error:
Thu May 05 06:34:19 2016
:: JDK installation failed. Return Code: 1603, ErrorCode: 0

This error message is displayed by the Microsoft Windows Installer engine and is a general error code that indicates a problem occurred during the installation.
Read on to learn how to sidestep this speed bump.
The following is a non-exhaustive list of known causes for this error:
Short file name creation is disabled on the target machine.
An Install Script custom action is prototyped incorrectly.
A file is locked and cannot be overwritten.
The Microsoft Windows Installer Service is not installed correctly.
The Windows Temp folders are full.
The setup was corrupted after installation and, therefore, fails with this error during un-installation.
An older version of Install Shield Developer is being used.
A general error occurred during the installation.
Print and File sharing is not installed or enabled when installing MSDE 2000.
How to Avoid this Error
The following solutions have resolved this error in the majority of cases:
Make sure short file name creation is enabled on the target machine. You can check to ensure that the target machine does not have short file name creation disabled by navigating to the following registry entry:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem
Make sure the value "NtfsDisable8dot3NameCreation" is equal to 0. This indicates that short file name creation is enabled. A value of 1 indicates that this functionality is disabled. You should change the value to 0.
After modifying this value, the target machine should be rebooted before attempting to launch the setup again.
Note: If the target machine should normally have short file name creation disabled, it can be disabled after the install completes by resetting "NtfsDisable8dot3NameCreation" to 1 and rebooting.
To ensure that the Windows Installer Service is properly installed and configured, it is recommended that users install the file InstmsiA.exe on Windows 95/98/Me or InstmsiW.exe on Win NT systems. These files are shipped with your InstallShield product and are located in the following location:
<Product Path>\Redist\Language Independent\i386
Empty all temporary folders. The specific temporary folders for a machine can be determined by accessing the DOS prompt and typing set. Note the values listed for TEMP and TMP, and delete all files in those locations.
Make sure no other applications, including utilities such as virus scanners, are running in the background. Close all running applications and utilities, and launch the installation again.
If this error occurs during un-installation, use the Microsoft Windows Installer CleanUp utility to uninstall the installation.
Once the installation has been successfully un-installed, you can then debug the project to determine what caused the original error.

Put your installer executable to C:\ and run it from there.
More info here: http://wills-tech-notes.blogspot.com/2015/12/cannot-install-java-semicolon-found-in.html

The Error which you are getting is normally it throws during java update installation, Not, the first time installation.
Please kindly follow the below steps to resolve your issues. Let's give a try.
Step 1:
Just want to ensure if you have already java installed on your machine partially.
Follow the below entries in command prompt:
java -version - If it throws error we are good.
echo %JAVA_HOME% and echo %JRE_HOME%
echo %PATH% - If you see the Java entries you may need to clear all this.
echo %CLASSPATH% - Here as well as said in above.
If no results from the Step 1, Please follow Step 2.
Step 2:
Check your C: drive for to verify there should not any Java installation folders. If yes, Please delete those.
Clear all your logs from your machine(If it contains any existing java related logs)
https://www.java.com/en/download/help/plugin_cache.xml
Step 3:
Actually, we do not require to install the Java, instead we can download the Zipped java file and locate into dedicated drive.
And then, make all your environment variables entries into this location. In, this case you are good i believe.
If you still face issues, do let me know?

Try this and maybe you'll get your job done
1 Close the installer when you see Java error 1603. (It has installed a
bunch of files, but exits prematurely.)
2 Open javacpl.exe from C:\Program Files (x86)\Java\jre1.8.0_XX\bin (or
for x64, C:\Program Files\Java\jre1.8.0_XX\bin) where XX is the update
number.
3 Uncheck "Enable Java content in the browser" on security tab and click
OK to close Java control panel
4 Retry installing Java. It usually succeeds for this time.
5 Open javacpl.exe again (see step #2)
6 Check Enable Java content in browser on security tab and click OK to
close Java control panel
7 If it still fails, try uninstalling windows update KB2918614, then
reboot and try these steps again.

Try following steps:
Run installer from c:/
Run jdk*...*.exe /log msi.log to see installation logs, please attach
them if it won't help you understand a cause of the problem
In the related JDK bug an issue with an environment was a cause of the problem.

uninstall KB3139923 helped in my case

I had the same problem with version 8 and the solution was to run the installer as Administrator (right click, then "Run as Administrator").

Increase memory for jMeter on command line

I am running jMeter from the command line on a Mac. Today it threw an Out of memory, heap space error....
newbie$ sh jmeter.sh
Exception in thread "AWT-EventQueue-0" java.lang.OutOfMemoryError: Java heap space
at java.awt.image.DataBufferInt.<init>(DataBufferInt.java:41)
at java.awt.image.Raster.createPackedRaster(Raster.java:455)
I know I need to increase the memory allocated to it, but not sure how. I looked at this post Unable to increase heap size for JMeter on Mac OSX and found that jMeter script file in the bin folder it mentions and made the below updates..
HEAP="-Xms1024m -Xmx2048m"
NEW="-XX:NewSize=512m -XX:MaxNewSize=1024m"
But I am still getting the out of memory error. Do I just need to give it more or am I changing in the wrong place? Could it be I need to restart my whole machine?

As far as I understand:
You made changes to jmeter script
You're launching jmeter.sh script
You want to know why the changes are not applied?
If you changed jmeter script why don't you just launch it as ./jmeter ?
If you need to start JMeter via jmeter.sh for any reason, run it as follows:
JVM_ARGS="-Xms1024m -Xmx2048m -XX:NewSize=512m -XX:MaxNewSize=1024m" && export JVM_ARGS && ./jmeter.sh
See Running JMeter User Manual chapter in particular and The Ultimate JMeter Resource List in general for the relevant documentation.

If you have trouble finding it in the logs, then
You can use
ps -ef | grep jmeter
this may give you the details( Not a mac user, but I thing ps -ef would work)
The other option is to use jvisualvm, it ships already with jdk, so no extra tool is required.Run the visualvm and the jmeter, you can guess the name of the application ( entry of jemter ) on the left pane of visualvm , click on it, and all the jvm details will be available.
After this you can confirm whether jmeter is availed with 2GB max Ram. And increase if needed.

There could be different possible reasons for OutOfMemory Error. If you have successfully changed the allocated memory/heap size and still getting the issue then you can look into following factors:
Listeners: Do not use 'TreeView' and 'TableView' Listeners in actual load test as they consume lot of memory. Best practice is to save results in .JTL file, which can be later used for getting different reports.
Non-GUI Mode: Do not use GUI mode while performing actual load test. Run test from command line.
For more, visit the following blog as it has some really nice tips to solve OutOfMemory issues in JMeter.
http://www.testingdiaries.com/jmeter-out-of-memory-error/

Hibernate - OutOfMemoryError - java heap size

I'm currently having this problem where I am executing a query that will load large of records. At first execution, it is successful, but when I
execute again, I am having java heap size out of memory.
I Know I can increase java heap size using command line, but that requires a compiled jar file.
But I am currently on the development process, so how can I increase java heap size in that case?
Im using Elipse as my IDE.
Thanks for any response.

It doesn't require a compiled jar file. Choose Run - Run configurations... - Select your run configuration - Arguments tab. Then enter the appropriate command line argument in the VM arguments text box: -Xmx1024m for example.

You can modify the eclipse.ini file located inside of our eclipse directory .There you will find Xms40m Xmx256m parameter with some value , you can increase it to Xms256m Xmx1024m . Then check whether outofmemory error is still there . If its there then try tuning these parameter slightly increasing and check.

Apperently that was not enough for an answer... well, let me just copy the text from those answers instead :S
You can use the environment variable _JAVA_OPTIONS to set the default heap size. This will change the heap size for all Java programs. Like this:
export _JAVA_OPTIONS="-Xmx1g"

Netbeans Module Development out of memory

I am creating a module in netbeans to help with a project i am working on however when I run the module in the developmental IDE i get an out of memory exception while loading an asset. This procedure seems to work fine in the base netbeans environment but when i make the same calls during module development i get the error. After attempting to load the asset in several differnt ways i tried appending the following to project.properties and then to Netbeans Platform config(platform.properties)
netbeans_default_options="-J-Xms384m -J-Xmx1024m -J-XX:PermSize=32m -J-XX:MaxPermSize=96m -J-Xverify:none"
and also tried
netbeans_default_options="-J-client -J-Xverify:none -J-Xmx1024m -J-Xss2m -J-Xms32m -J-XX:PermSize=32m -J-XX:MaxPermSize=200m -J-Dapple.laf.useScreenMenuBar=true -J-Dsun.java2d.noddraw=true"
I have also tried
test.run.args=-ea -Xms1024m -Xmx1024m

I was stuck in this issue for a while. Adding this line into project.properties has solved the problem:
run.args.extra=-J-Xms128m -J-Xmx512m -J-XX:MaxPermSize=512m
While it improved the heap memory size, apparently the problem was gone because of the increased non-heap memory size (J-XX:MaxPermSize=512m).
Good luck

If the problem occurs when you install your module in the development IDE, you can configure the maximum heap size and perm size in <netbeans-install-dir>/etc/netbeans.conf by appending your -J-Xmx and -J-XX:MaxPermSize parameters to the netbeans_default_options variable. You should also append -J-XX:+UseConcMarkSweepGC -J-XX:+CMSClassUnloadingEnabled -J-XX:+CMSPermGenSweepingEnabled, as noted in the docs (see http://wiki.netbeans.org/FaqGCPauses).

Had a similar memory problem on my Linux Debian.
Only Works on linux / possibly UNIX OS's???
Here is how to fix it:
run a terminal
log in as root
type crontab -e
scroll to the bottom or the file and type * * * * * sync; echo 3 > /proc/sys/vm/drop_caches
This magic line cleared all unused ram every minute. It removed the unused memory NetBeans was producing (including any other memory-consuming programs).
plz tell me if this works.

solution to Out of memory exception in netbeans is![.....][1]
I have tried by setting project properties.
right click on project --> select Properties-->General Settings-->VM Options
Add below parameters -Xms256m -Xmx512m