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Questions tagged [jvm]

JVM (Java Virtual Machine) is a program that loads and runs Java applications by converting the bytecodes into machine executable code.

57 questions
81
votes
11 answers

How to fix font anti-aliasing in IntelliJ IDEA when using high DPI?

I use a higher DPI setting which makes IntelliJ (actually Android Studio) have really messed up fonts. I use MacType which renders my fonts beautifully elsewhere, but I guess Java VM somehow intercepts it or something, it's killing me.
Bloke
  • 1,124
15
votes
5 answers

Does Android or Java use more power since it's running on a virtual machine?

Since Android applications run on a JVM (Dalvik VM) which is basically a virtual processor, and every virtual instruction has to be mapped to the underlying chipset's native instruction, does this mapping result in more power consumption due to the…
PKM
  • 523
10
votes
3 answers

Are there performance differences between OpenJDK and Oracle?

Oracle has recently decided to start charging for commercial use of their JVM. Our team has started to switch over to using OpenJDK instead, and are finding everything seems to be working fine, except we're getting slower performance. Our servers…
Brad Parks
  • 3,253
7
votes
2 answers

Find path to current JVM

I need to find the path to the current Java VM running on my Windows machine. How can I do that?
Ondrej Sotolar
  • 143
7
votes
3 answers

Is it possible to preload JVM to make starting of little one-shot java applications faster?

Expected algorithm: You start JVM without actual application (only telling it to load some jars), it loads and listens a socket and waits in a background. When you start the application (preloaded_java -cp /usr/share/java/....jar:. qqq.jar) it…
Vi.
  • 17,755
4
votes
5 answers

Do I have a Java Virtual Machine on my Windows 7?

How can I find out if there is Java Virtual Machine installed on my Windows 7?
MJ_Developer
3
votes
3 answers

How to make Microsoft JVM work on Windows 7?

I am struggling with the following problem. I cannot install MS JVM 3810 properly on Windows 7. When I start Interner Explorer 8 without starting any java 1.1 programs choosing Java custom settings under Internet options causes the crash of the…
rics
  • 143
2
votes
1 answer

Are there any JVM running on GPU

I haven't seen any, but are there any JVM that is build for CUDA or DirectCompute? I've seen the advantage of having an application run in the CPU as well as offload process to the available GPU.
cyberquarks
  • 1,016
2
votes
0 answers

Oracle Session Numbers Going Crazy - What is the best strategy to over come this issue?

We have a JVM web application which is running on Oracle Application Server and it uses commons-dbcp (http://commons.apache.org/proper/commons-dbcp/) and implicit connection pooling. Our db is Oracle. Under heavy load oracle session numbers are…
cgon
  • 71
2
votes
2 answers

Does Intel core i3 uses Dynamic CPU frequency switching?

I am using a VisualVM which is a Java Virtual Machine profiler. I am trying to start the application jvisualvm and it giving the message I am working on a Sony Vaio laptop model number VPCEA24FM which has a Intel Core i3 processor. My Question How…
Gaurav Agarwal
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2
votes
0 answers

Is there a way to run multiple JVM within the same browser?

I'm using Oracle at work which fires off a Java app. I'd like to use two instances of the same app to work between two different screens of the same app. I can do it but with Chrome opening one and a second browser (Internet Explorer) opening other.…
Gabriel
  • 3,705
2
votes
1 answer

Tomcat doesn't use latest Java version

I have Java 8 v171. Few month ago, I have installed Tomcat 8.5.50. Now, I need to upgrade my Java version. Now, I have Java 8 v171 and Java 8 v301. Output of java -version: java version "1.8.0_301" Java(TM) SE Runtime Environment (build…
Elikill58
  • 157
2
votes
1 answer

Linking JVM languages other than Java with Matlab

I'm aware that it's possible to link Java programs with Matlab. Is it therefore possible to link any JVM languages with Matlab? I would suspect that's the case -- presumably Matlab can't tell and doesn't care how the .class files got created -- but…
Robert Dodier
  • 151
2
votes
1 answer

Is there a 64-bit version of Groovy for Windows 10?

Is there a 64-bit version of Groovy? My OS is Windows 10. I have been looking for days with no luck. The problem I have is that I need to use a 64-bit JVM with Groovy so that I can maximize the JVM heap size (I need more than 4G which is the maximum…
Yousef
  • 123
2
votes
0 answers

Java application response is slow if Linux cache consumes entire system free memory

I am running two Java-based application on my server with 32GB of RAM,16 core CPU. Apart from this I just have MySQL community server 5.6.16. The Java applications are assigned 10 GB of overall memory. The Xmx and Xms are same for both applications.…
Suyash Jain
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