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The figure above is the main data area of the jvm virtual machine when it runs. The blue part is the thread sharing area, and the white part is the thread private area. The following examples all run in jdk1.7 1. Heap memory overflow /** * VM Args: -Xms2m -Xmx2m * Created by Stay on 2017/5/15 14:50. */ public class Base1 { ...

kotlinTouchHelperDemo Github address to all guest officers: https://github.com/Niekon/kotlinTouchHelperDemo Brief Book Address: http://www.jianshu.com/p/2e591df06d73 I wanted to write kotlin's Demo a month ago and learn it before kotlin became Android's mainstream development language. But there has been no time in the middle, just these ...

Reprint address: http://www.cnblogs.com/heimianshusheng/p/5828844.html Speaking of the static keyword, I believe that you will never be strange, but, want to fully explain, fierce thinking, find that they do not seem to understand... For example, when I was asked by a classmate yesterday... Of course, not everyone is as poor as I am, but t ...

Java5: Generics:After referencing generics, it allows you to specify the type of elements in a collection, eliminates mandatory type conversion, and has the advantage of type checking at compile time. As parameters and return values, Generic is the cornerstone of vararg, annotation, enumeration, collection. A. Type Safety When y ...

Following the book?extends T and?After Sup T, let's talk about generics. Demo 1 public interface Generator { <T> T next(); } The first solution is to add'<T>'before the method return type to make it a generic method. public interface Generator<T> { T next(); } The second solution is to add'<T>'to the interface ...

This chapter relies on Marble Use, so make sure you have a good understanding of Marble before reading it. The interrupt feature is supported starting with Marble-Agent 2.0.5. Thread interrupt use Introducing the marble-agent jar package xml <dependency> <groupId>com.github.jeff-dong</groupId> <artifactId ...

Foreword: In Java 8, the emergence of Metaspace prevents us from encountering the problem of java.lang.OutOfMemoryError: PermGen, but we should remember that this new feature will not eliminate the memory leak caused by class loading. (1) A brief introduction to Metaspace (1) Memory model: Most class metadata are allocated in local memory, a ...

Detailed Description of Virtual Machine Performance Monitoring and Fault Handling Tools 4.1 Overview This article refers to Chapter IV of Zhou Zhiming's "Deep Understanding of Java Virtual Machine", in order to sort out ideas, simply record it for later reference. JDK itself provides a lot of convenient monitoring tools for JVM perfor ...

The producer-consumer model is a classic case for us to learn multithreaded knowledge. A typical producer-consumer model is as follows: public void produce() { synchronized (this) { while (mBuf.isFull()) { try { wait(); } catch (InterruptedException e) { ...

A programming problem is as follows: Instantiate three threads, one thread prints a, one prints b, one prints c, three threads execute at the same time, and require six connected ABCs to be printed. Topic analysis: From the meaning of the question, we can conclude that we need to use three threads, three threads will print six characters, the k ...