I’m having a problem with BufferedImage in runtime. I’m loading an .png, but the BufferedImage is null. I don’t get an IOException, but an NullPointerException. And the biggest problem to me, is that when I run this same code in netbeans he works fine… My code is The ApplicationProperties.getPath() are static and don’t change in runtime. And if I separate
Tag: runtime
Command is Not Interpreting in Java [closed]
Closed. This question needs debugging details. It is not currently accepting answers. Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question. Closed 2 years ago. Improve this question I have this block; And when I execute it, nothing happens. It sometimes
Adding module export to mvn test execution runtime
Getting this error during tests: I’ve tried creating jvm.config at the root, next to pom.xml as such That doesn’t change anything. So i try to configure maven compiler plugin as such: for the record i even tried it so: Nothing. Then i tried surefire plugin like so : Two days working on this and failing miserably. Please help. Using OpenJdk11
Mac OS Catalina “to open eclipse you need to install the legacy java se 6 runtime”
PROBLEM : Although I successfully installed Java JDK Kit and Eclipse on my MacOS Catalina 10.15, I cannot launch Eclipse. I get this error message: “To open eclipse you need to install the legacy java se 6 runtime” BACKGROUND : I am starting to learn java programming. I wanted to install java and eclipse. Following a helpful youtube tutorial, I
Speed of custom Java classes vs. Maps
Which is faster: a Set whose elements are each an instance of CustomObject as defined below: a Set whose elements are each an instance of Map<String, String> where each Map is of the format {“A” : Avalue, “B” : Bvalue, “C” : Cvalue}? or any other data structure that you can think of that better captures this data if I
Executing Java code inside a Java program
I would like to create an application which for example measures the execution time of a certain block of code. In this case it should have a structure like this: I’m curious about the method designated by the arrow, I need some sort of a placeholder. How should be this method implemented? Is it even possible to execute a custom
Java Process cannot get the InputStream through Runtime.getRunTime().exec()
The Code has issues with getting the InputStream from the Process, because if I run the Shell script from my Terminal it runs completely fine, but if I Run the Script like this,the str is always null, I am using this code to get the output of the Shell Script directly into Java instead writing the Script Output in the
Java Error opening registry key
I get this error when I try to do anything with Java in command prompt: I did screw around with deleting Java directories and registry a few days ago. I restarted computer and java was still working fine, then i restarted it again today and now I get this error. I have tried uninstalling and reinstalling but that doesn’t seem
How to check existence of a program in the path
I’m writing a program in scala which call: I want to check if “svn” is available from the commandline (ie. it is reachable in the PATH). How can I do this ? PS: My program is designed to be run on windows Answer Here’s a Java 8 solution: Replace anyMatch(…) with filter(…).findFirst() to get a fully qualified path. Here’s a
During execution, how can a java program tell how much memory it is using?
During execution, how can a java program tell how much memory it is using? I don’t care how efficient it is! Answer VonC’s answer is an interactive solution – if you want to know programatically, you can use Runtime.totalMemory() to find out the total amount used by the JVM, and Runtime.freeMemory() to find out how much of that is still