jvm

来源： https://stackoverflow.com/questions/63699573/growing-resident-size-set-in-jvm

来源： https://stackoverflow.com/questions/47570246/connect-to-kafka-through-socks-proxy

来源： https://stackoverflow.com/questions/47570246/connect-to-kafka-through-socks-proxy

来源： https://stackoverflow.com/questions/63077785/will-jvm-evaluate-a-obvious-return-value-on-each-execution

问题 I read many forums and posts about different style to implement single-tone pattern in java and seems "Enum are the best way to implement singletone pattern in java"!! I wonder how can i use Java Enum to implement SingleTone pattern in java with lazy-loading capability. since Enums are just classes. The first time a class is used, it gets loaded by the JVM and all of its static initialization is done. the enum members are static , so they're all going to be initialized. does anyone know how

问题 I want a to create a test for my spring boot application that uses specific JVM arguments, I want the JVM arguments to be used with only this test. Is this possible ? My goal is to set up a proxy for just one test, so if there is another approach to achieve that, please suggest it. 回答1: I solved this by adding a static bloc in the class and setting the system properties: static { System.setProperty("http.proxyHost", "myproxyserver.com"); System.setProperty("http.proxyPort", "80"); System

问题 I'm about to upgrade a tomcat installation from version 6.0 to version 8.5, and also upgrading the JVM from 6 to 8. Our java code is compiled with java 6 as for now. I know that running java code on the latest JVM is always a good idea performance-wise (not to mention security-wise). In this way some code compiled with java 1.6 might run faster on JVM 8 compared to JVM 6. But how about compilation? Does one gain anything by compiling code written in java 6 with a java 8 compiler (i.e. only

问题 We use mozlia rhino to generate dynamic class, then load JsClass by custom classloader like this DynamicClassLoader loader = new DynamicClassLoader(JavaScriptFactory.class.getClassLoader()); Class<?> jsClass = loader.loadClass("D://","com.huawei.xxx"); jsClass.newInstance(); As you see, every JsClass have a seperate classloader, when user modify js, we will also reload JsClass by this code, Now, we face a problem, when call jsClass.newInstance(), some thread hang at getDeclaredConstructors0

问题 I want to know, how sockets are implemented in the Java Virtual Machine. Is there a native library included? And if, is it a C library? Where can I find information about this topic? The offical Java tutorial on networking does not help me there. Some interesting links would help. Update: Are there any official information provided by Sun? Thanks in advance! Edit I found a proof, I mark my answer as the correct one. Thanks to Oscar, that was the perfect hint for me!!! THANKS! 回答1: Probably

问题 I want to know, how sockets are implemented in the Java Virtual Machine. Is there a native library included? And if, is it a C library? Where can I find information about this topic? The offical Java tutorial on networking does not help me there. Some interesting links would help. Update: Are there any official information provided by Sun? Thanks in advance! Edit I found a proof, I mark my answer as the correct one. Thanks to Oscar, that was the perfect hint for me!!! THANKS! 回答1: Probably