java concurrency in practice book

Java serialization and deserialization (practice)Basic concepts:Serialization is the process of converting an object's state into a format that can be persisted or transmitted. Relative to serialization is deserialization, which transforms a stream into an object. Together, these two processes make it easy to store and transfer data.I saw it in a book yesterday,

always holds the correct lock when visiting the data.A closed mechanism is easier to construct a thread-safe class, because when the state of the enclosing class is parsed, the entire program is not required to examine the thread security of the class.Even if the closure can guarantee that all processing within the object is readily available, it is also important to note that when the object is advertised, it is possible to fail, such as hashset-only one variable in the sample object ensures t

2. Thread security 2.1 What is thread-safeWhen multiple threads are accessed, the program can be " correct ", which is thread-safe.An object that has no status (a class that can be understood as having no fields) must be thread safe.2.2 atomicityIn a typical case, the i++ in a multithreaded state is not secure. Because i++ is actually implemented in a number of steps, the execution of multiple threads can be confusing to each other.Race condition (Race Conditions)Threads and threads need to depe

Java Practice question: rabbit problem This question is also called the Fibonacci sequence (Fabonacci), the first person to study the series is the Leonardo of Pisa (also known as the Fibonacci), which he used to describe the number of rabbits growing. The first month there are a couple of newborn rabbits. After the second month, they can have babies. Every month a pair of fertile rabbits will be born, and

: Console input age, according to age output different tipsScanner sc=new Scanner (system.in);System.out.println ("Please enter an Age:");int Age=sc.nextint ();if (age>60){System.out.println ("You are old");}else if (age>30){System.out.println ("You are middle-aged");}else if (age>18){System.out.println ("You for Youth");}else if (age>13){System.out.println ("You are a teenager");}Else{System.out.println ("You Are Children");} Topic Seven: Enter the radius of the circle, calculate and outp

chickens: 78 Cocks: 13 only Hens: 4 only chicks: 69 Cocks: 13 Hens: 5 Chick: 60 cocks: 13 Hens: 6 Chicks:51 Cocks: 13 Hens: 7 Chickens: 42 Cocks: 13 Hens: 8 only chickens: 33 Cocks: 13 only Hens: 9 only chicks: 24 Cocks: 13 Only Hens: 10 Chick: 15 Cocks: 13 Only hens: 11 Chicks: 6 Cocks: 14 only hens: 1 Chicks: 81 Cocks: 14 only hens: 2 Chicks: 72 Cocks: 14 Hen: 3 chickens: 63 Cocks: 14 only hens: 4 Chickens: 54 Cocks: 14 Only hens: 5 Chicks: 45 Cocks: 14 Hens: 6 Ch

PackageNetwork;Importjava.io.IOException;ImportJava.io.PrintWriter;ImportJava.io.Writer;ImportJava.net.Socket;ImportJava.util.Scanner; Public classClisockettest { Public voidTest () {Try { while(true) {Socket Socket=NewSocket ("192.168.1.2", 8888); Writer W=NewPrintWriter (Socket.getoutputstream ()); Scanner Scaner=NewScanner (system.in); W.write (Scaner.nextline ()); System.out.println ("entered the book.");

Observer mode is common in Swing development, and is useful for eliminating the coupling of components in scenarios other than GUI applications. However, there are still some common flaws in the registration and invocation of listeners. In this period of Java theory and practice, Java expert Brian Goetz offers some good advice on how to make a good listener and h

which case the worker thread is not necessarily aware if the values in memory change. This means that the worker thread does not necessarily see changes in the in-memory variables. This is the problem of visibility. The solution to the visibility problem is the same as the way to solve the race condition: lock. Locking guarantees that only one thread at a time can handle the variable, and the value in the current thread's workspace is always the most recent valid value, and the latest value is