effective java 3rd

Tips"Effective Java, third Edition" an English version has been published, the second edition of this book presumably many people have read, known as one of the four major Java books, but the second edition of 2009 published, to now nearly 8 years, but with Java 6, 7, 8, and even 9 of the release, the

My previous blog:System.GC () and-XX:+DISABLEEXPLICITGC startup parameters, and Directbytebuffer memory release when discussing how to reclaim out-of-heap memory, mention "NiO in direct The release of memory is not through Finalize (), because finalize is unsafe and affects energy ". Effective Java is also mentioned in the book: Avoid finalizers. People have a latent sense of rebellion, others give the conc

Effective JavaCreating and destroying objects---consider replacing constructors with static factory methodsconstructors are the most basic and most common way to create an object instance, most developers use a class, the first thing to consider is how to construct and initialize an object example, and the way to construct the first consideration is to do through the constructor function, So the first thing to focus on when looking at a document in Ja

Tips"Effective Java, third Edition" an English version has been published, the second edition of this book presumably many people have read, known as one of the four major Java books, but the second edition of 2009 published, to now nearly 8 years, but with Java 6, 7, 8, and even 9 of the release, the

DoubleGetX () {returnx;} Public DoubleGetY () {returny;} Public voidSetX (Doublex) { This. x =x;} Public voidSety (DoubleY) { This. y =y;} }3rd: Make the variability to minimizeThe immutable classes are introduced first: immutable classes are classes whose instances cannot be modified. All information contained in each instance must be provided at the time the instance is created and fixed throughout the lifetime of the object. There are many immu

Tips"Effective Java, third Edition" an English version has been published, the second edition of this book presumably many people have read, known as one of the four major Java books, but the second edition of 2009 published, to now nearly 8 years, but with Java 6, 7, 8, and even 9 of the release, the

Effective Java reads notes and refines the contents of the book in a way that suits its own understanding. "Effective Java" is a very useful book, reading methods should be quick to understand, summarize, and then apply. Rather than, a word one word to scrutinize, study. So, nerds are generally very xx, in my eyes.Made

Tips"Effective Java, third Edition" an English version has been published, the second edition of this book presumably many people have read, known as one of the four major Java books, but the second edition of 2009 published, to now nearly 8 years, but with Java 6, 7, 8, and even 9 of the release, the

Tips"Effective Java, third Edition" an English version has been published, the second edition of this book presumably many people have read, known as one of the four major Java books, but the second edition of 2009 published, to now nearly 8 years, but with Java 6, 7, 8, and even 9 of the release, the

Tips"Effective Java, third Edition" an English version has been published, the second edition of this book presumably many people have read, known as one of the four major Java books, but the second edition of 2009 published, to now nearly 8 years, but with Java 6, 7, 8, and even 9 of the release, the

This article is "effective Java" Reading notes, because it is a Java advanced book, it is inevitable that there will be an understanding of the deviation, if there is a mistake, very welcome to criticize, I am greatly appreciated. What is a builder (Builder), a classmate who has been interviewed may have been asked to distinguish between string and StringBuffer a

/*** Effective Java Second Edition* 30th: Use enum instead of int constant*/Import Java.util.HashMap;Import Java.util.Map;public class Enumtest {/* Media operation */Public final static int START = 1;Public final static int PAUSE = 2;Public final static int RESUME = 3;Public final static int STOP = 4;/* Return results */Public final static int ret_ok = 1;private static int playwithint (int fun){Switch (fun)

"Effective Java"--a summary after readingThis book is quite famous in the Java development industry. Today is finally a cursory reading ... The later thread part and the serialization section are not carefully seen due to the impatient gas mania. There is a week left in this month, and the digest is slowly summed up.1. Static Factory method instead of constructor

Tips"Effective Java, third Edition" an English version has been published, the second edition of this book presumably many people have read, known as one of the four major Java books, but the second edition of 2009 published, to now nearly 8 years, but with Java 6, 7, 8, and even 9 of the release, the

Personal blog Sync release: Effective java-Reading notes-Chapter III methods that are common to all objectsChapter III methods that are common to all objectsAll non-final methods (equals, Hashcode, toString, clone, Finalize) have explicit general conventions because they are designed to be overwritten, if not adhered to, a hash-based collection (HashMap, HashSet, HashTable) may not work together with this c

Singleton mode: "A class has and has only one instance, and self-instantiation is provided to the system as a whole." ”There are a number of ways to implement a singleton pattern, such as lazy mode (and so on when the time is instantiated), a Hungry man mode (class loading is instantiated), and so on, here with the A Hungry Man mode method implementation, that is, class loading on the instantiation, a single case pattern application scenario has many, such as an application has a window interfac

Tips"Effective Java, third Edition" an English version has been published, the second edition of this book presumably many people have read, known as one of the four major Java books, but the second edition of 2009 published, to now nearly 8 years, but with Java 6, 7, 8, and even 9 of the release, the

Tips"Effective Java, third Edition" an English version has been published, the second edition of this book presumably many people have read, known as one of the four major Java books, but the second edition of 2009 published, to now nearly 8 years, but with Java 6, 7, 8, and even 9 of the release, the

if they are later incorrectly dereferenced, the program throws a null pointer exception immediately, rather than silently running down the wrong way.Scene:1. As long as a class manages its own memory.2. Cache.3rd. Methods that are common to all objects7. When rewriting equals, follow the general conventions:When a class has its own unique "logical equality" concept (rather than whether they point to the same object), and the superclass does not overw

Click on the link to see the original cloud notes spent half a day, greedy chew Read effective Java this book (although famous for a long time, but seldom read) turned over a kind of eating and sleeping feeling, work left to stay to read a special, and then simply take home to see. The following is a summary of the content, Mainly for the personal feeling useful, there is a large number of not mentioned, be