jvm-arguments

问题 I am using exec-maven-plugin to run java app. I need to pass both JVM params and program arguments. I am setting JVM params like this: <artifactId>exec-maven-plugin</artifactId> <version>1.6.0</version> <executions> <execution> <id>MyId</id> <goals> <goal>java</goal> </goals> <configuration> <mainClass>MyClass</mainClass> <arguments> <argument>-XX:+UseG1GC</argument> <argument>-Xms2G</argument> <argument>-Xmx2G</argument> </arguments> </configuration> </execution> ... and run the program: mvn

问题 I am using exec-maven-plugin to run java app. I need to pass both JVM params and program arguments. I am setting JVM params like this: <artifactId>exec-maven-plugin</artifactId> <version>1.6.0</version> <executions> <execution> <id>MyId</id> <goals> <goal>java</goal> </goals> <configuration> <mainClass>MyClass</mainClass> <arguments> <argument>-XX:+UseG1GC</argument> <argument>-Xms2G</argument> <argument>-Xmx2G</argument> </arguments> </configuration> </execution> ... and run the program: mvn

问题 I would like to read environment variable or property in every log line from logback.xml. Example if I hit echo "${FOO_INFO}" the result is "FOO_RESULT", this FOO_RESULT I need to print it in the every log line. After adding JAVA_OPTS="-Dfoo.info=${FOO_INFO}" I tried below option:- Option : added and calling %d{ISO8601} [%thread] %-5level %logger{36} ${FOO_INFO}- %msg%n 回答1: The documentation indicates you can include a system property by using a PatternLayout with the property conversion

问题 I didn't find a suggestion on how much RAM I actually should allocate to the JVM. Assuming that my computer has 4GB RAM and runs Windows 10. I nearly only use Java Applications on it. With how much RAM should I start the JVM? The system needs RAM for itself too, so in my logic, I should not allocate 4 GB even if that is possible. This isn't a black/white question, I just want to have an idea and how to come to an answer in this question. 回答1: I didn't find a suggestion on how much RAM I

问题 I'm running a JAR with the option -Dsun.security.krb5.debug=true . How and where do I see the debug information generated? 回答1: This is a parameter for JVM. It usually goes with -Dsun.security.jgss.debug=true Afterwards, to see debug lines, perform any JGSS/Kerberos operation, for example those described in tutorial: http://docs.oracle.com/javase/7/docs/technotes/guides/security/jgss/tutorials/. Debug information is written to console. To see it you can either start jar from console java -jar

问题 I am creating javafx projects in STS(4.6.1) with e(fx)clipse plugin and scenebuilder. Everytime I create a new project, I have to add the VM arguments in run configurations: --module-path "/home/path/to/javafx sdk/lib" --add-modules javafx.controls,javafx.fxml otherwise the program ends with the error message which says Error: Could not find or load main class application.Main Caused by: java.lang.NoClassDefFoundError: javafx/application/Application I have to do this for every javafx project

问题 I am creating javafx projects in STS(4.6.1) with e(fx)clipse plugin and scenebuilder. Everytime I create a new project, I have to add the VM arguments in run configurations: --module-path "/home/path/to/javafx sdk/lib" --add-modules javafx.controls,javafx.fxml otherwise the program ends with the error message which says Error: Could not find or load main class application.Main Caused by: java.lang.NoClassDefFoundError: javafx/application/Application I have to do this for every javafx project

问题 I am creating javafx projects in STS(4.6.1) with e(fx)clipse plugin and scenebuilder. Everytime I create a new project, I have to add the VM arguments in run configurations: --module-path "/home/path/to/javafx sdk/lib" --add-modules javafx.controls,javafx.fxml otherwise the program ends with the error message which says Error: Could not find or load main class application.Main Caused by: java.lang.NoClassDefFoundError: javafx/application/Application I have to do this for every javafx project

问题 I am creating javafx projects in STS(4.6.1) with e(fx)clipse plugin and scenebuilder. Everytime I create a new project, I have to add the VM arguments in run configurations: --module-path "/home/path/to/javafx sdk/lib" --add-modules javafx.controls,javafx.fxml otherwise the program ends with the error message which says Error: Could not find or load main class application.Main Caused by: java.lang.NoClassDefFoundError: javafx/application/Application I have to do this for every javafx project

问题 I do not have access to the JVM settings since I am submitting code to be run elsewhere, so I can't follow the other Stack Overflow answers about extending stack size. Is there any way to do it from inside my Java file? The reason I want to do this (not really important): I am using recursion on a tree with 10^5 nodes. The average case is ok, but there is no guarantee on the shape of the tree. I am dealing with an edge case where the tree is just one long line. I get a StackOverflowError, but