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preface For example, I was asked by the interviewer a few days ago what is reflection??? And my answer is!!! Reflection is the key of dynamic language. Reflection allows programs to obtain the internal information of any class with the help of Reflection API during execution, and can directly operate the internal properties and methods of ...

summary When it comes to the three letters of JVM, what first pops out of your mind? I generally analyze the following three kinds of people: The first one: I know the three letters of JVM separately. I don't know what it isSecond: isn't it a Java virtual machine that runs Java programsThe third kind: it is divided into heap memory, method ...

1. Reference in Java Reference is the bridge between heap and stack in java. If you want to access objects in the heap, you must access them through reference (except for 8 basic data types) In garbage collection, if an object is still referenced by GcRoots, it will not be recycled (strong reference). This is not absolute. It is mainly determi ...

3, Class loading and initialization Interview questions: Describe the hierarchy of class loaders? Parental delegation Why parent delegation How is the Class file loaded into memory and executed [external link image transfer failed. The source station may have anti-theft chain mechanism. It is recommended to save the image and upload ...

This article is still based on the JDK8 version, with some changes from the JDK9 modularizer to the class loader. 0 javac compilation java code public class Math { public static final int initData = 666; public static User user = new User(); public int compute() { int a = 1; int b = 2; int c = (a + b) * 1 ...

Getting started with JVM Inclusion relationship of JDK, JRE and JVM JVM features Some people say that classLoader does not belong to the JVM, and the concept does not matterInterpretation and compilation mix Cross language platform The JVM is java independent Any language - compile or dynamically generate - > Class file - run in - &gt ...

catalogue JAVA Memory Model (JMM) To gain insight into volatile variables, you must first understand the Java memory model. Therefore, before introducing volatile variables, let's briefly understand the Java memory model. Here, we compare the memory model of physical machine (shared memory multi-core system) with JMM, because there is ...

🔰 Learning video 🔰 Shang Silicon Valley song Hongkang JVM complete tutorial (detailed explanation of java virtual machine) Number of episodes: 39-43 1, Foreword This section mainly talks about the runtime data area, that is, the part in the figure below, which is the stage after the class is loaded When we pass the previous steps: ...

[elegant code] 03 optional null pointer exception Welcome to b station official account / public number [hexagon warrior Xia Ning], a man who wants to fill all the indicators. The article has been published in github directory Included. The handsome and beautiful in front of the screen, if it helps you, please like it and add a collection, ...

The whole process of class I loading and running Look at the program below package com.maltose.jvm; public class Math { public static final int initData = 666; public static User user = new User(); //A method corresponds to a stack frame memory area public int compute() { int a = 1; int b = 2; int c ...