I'm trying to understand how Java source code is executed and I'm confused as to what the JIT-compiler inside the JVM actually is. To start off let me tell you how I understand the process of going...

I´m building a flutter application in Android Studio and keep getting this error after installing a package when trying to build the application. This is the full error message: FAILURE: Build fai...

GraalVM native-image allow us to convert Java libraries into local executable. It also allow to compile to shared library as mentioned https://www.graalvm.org/docs/Native-Image/user/README An nati...

I have download Eclipse MAT and try to launch it on Windows. Executing MemoryAnalyzer.exe display a popup Incompatible JVM with this message: Version 1.8.0_242 of the JVM is not suitable for this p...

I have been looking into the Java JIT compiler and i cannot figure out why some of the code is still interpreted. Why doesn't the JIT compiler translate everything to native code? Interpretation is...

I've launched my spring boot project, my computer suddenly shuts down (battery issue !) Then I got the following error when trying to run the project again Module 'ms-overdue' production: java.lang...

Does anyone know why the JSR/RET bytecode pair is deprecated in Java 6? The only meaningful explanation I found on the net was that they made code analysis by the runtime harder and slower to perf...

As it said in JVMS8: Although the Java Virtual Machine defines a boolean type, it only provides very limited support for it. There are no Java Virtual Machine instructions solely dedicated to oper...

After Android Studio sync my gradle project, I see the following message in the event log: Android Studio is using this JDK location: /path/to/my/project/specific/jdk which is different to wha...

The commonly agreed answer to this interview question is that two objects are created by the code. But I don't think so; I wrote some code to confirm. public class StringTest { public static void...

After starting Kafka Connect (connect-standalone), my task fails immediately after starting with: java.lang.OutOfMemoryError: Java heap space at java.nio.HeapByteBuffer.<init>(HeapByteBuffe...

I've got a class in which I do some runtime annotation scanning, but it uses the deprecated DexFile APIs which causes a warning to appear in LogCat: W/zygote64: Opening an oat file without a cla...

For my application, the memory used by the Java process is much more than the heap size. The system where the containers are running starts to have memory problem because the container is taking mu...

I have several Java projects running in Docker containers managed with Kubernetes. I want to enable the Horizontal Pod Autoscaling(HPA) based on CPU provided by Kubernetes, but I find it hard to de...

I think it is because the JVM needs to move objects, is that correct?

I tried java --version in the command line and I get : Unrecognized option: --version Error: Could not create the Java virtual machine Error: A fatal exception has occurred. Program will exit. E...

When running my test with gradle I started getting output below on the console. This output is coming from the JVM not my code. Kotlin DSL is used to configure my gradle build. *** java.lang.instr...

I am writing a client-side Swing application (graphical font designer) on Java 5. Recently, I am running into java.lang.OutOfMemoryError: Java heap space error because I am not being conservative o...

How can I add jvm(Java virtual machine) options in Apache Tomcat 6? Is there a administration console in tomcat? I tried http://localhost:8080/admin but I could not get anything out of it. I want...

We'd like to parse JSON5 documents in the JVM, but the JSON5-specific libraries available on GitHub all appear to have very low support. As parsers are often magnets for security vulnerabilities, w...

Today I decided to continue working on a program that I had created for my Computer Science class. Upon running it, I am greeted with this in the console: # # A fatal error has been detected by th...

I have intellij-idea installed. Although I have set JAVA_HOME environment variable referring to "C:\Program Files\Java\jdk1.8.0_45" but when I try to run it, I end up with the following error: fai...

Found an interesting JVM Flag : java -XX:+UnlockDiagnosticVMOptions -XX:+PrintFlagsFinal -version It prints hundreds of various options, I never heard about before. It also prints default value...

I am using a containerized Spring boot application in Kubernetes. But the application automatically exits and restarts with exit code 143 and error message "Error". I am not sure how to i...

Internal Startup issue -java.lang.RuntimeException: Could not find installation home path . Please make sure bin/idea.properties is present in the installation directory I have path and java_home ...