effective java 2nd ed

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78 useful rules of thumb in Java programming that cover the solutions of the problems faced by most developers on a daily basis. A comprehensive description of the technologies used by the Java platform design experts reveals what should be done and what should not be done to produce clear, robust, and efficient code. The 2nd edition reflects important changes in

(finalizer chaining)" is not automatically executed. If the class (not object) has an finalization method, and the subclass overrides the finalization method, the child class's finalization method must call the superclass's finalization method manually. The subclass is terminated in a try block, and the end method of the superclass is called in the corresponding finally block. Guarantees that the superclass's finalization method will be executed even if the subclass's finalization process throw

way to impose constraints on multiple parameters is to check all the parameters that a constraint must hold with multiple setter methods. Once an invalid argument is passed, the constraint fails immediately, rather than waiting for the build method to be called. The slight advantage of builder compared to constructors is that builder can have multiple mutable parameters. Constructors, like methods, can have only one mutable parameter.The traditional abstract factory implementation in

parameterless builder method to generate the immutable object. This builder is the static member class of the class of its builder.public class Person {private string id;private string Name;private string address;public the parameters necessary for static class builder{//Priv Ate final string id;//optional parameter private String name = "";p rivate string address = "";p ublic Builder (String Id) {this. id = ID;} Public Builder name (String name) {this.name = Name;return this;} Public Builder a

The compiler generates a public, parameterless default constructor only if the class does not contain an explicit constructor. This class cannot be instantiated as long as a class contains a private constructor. Example:1 //Tool Class2 Public classUtilityclass {3 //Private Constructors4 PrivateUtilityclass {5 Throw Newassertionerror ();6 }7 8 //Other operations ...9}　　Assertionerror avoid invoking the constructor inside the class to ensure that the class is not inst

up when a new entry is added to the cache. The Linkedhashmap class can implement the latter through its Removeeldestentry method. For more complex caches, you must use Java.lang.ref directly.A third common source of memory leaks is listeners and other callbacks.If the client registers callbacks in its own implementation of the API, but does not explicitly unregister, they will accumulate unless some action is taken. The best way to ensure that callbacks are immediately treated as garbage collec

you to find the most compiled code by executing the counter, and then notify the JIT compiler to compile it in a method-by-unit way. If a method is called frequently, or the number of effective loops in the method is large, the standard compilation and OSR (stack substitution) compilation actions are triggered respectively. 1.4.6 Apache harmony/google Android Dalvik VMDalvik VM is not a Java virtual machin

://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd Http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd " > Beans>At this point, no beans have been defined, so no beans can be fetched from the container4. Create a new class Screwdriver.java under src/main/java/Package:com.netease.nanodegree; Package Com.netease.nanodegree; Public class Screw

: Click to open Link(need resources 0 points of contact me ~) "Effective Java Chinese version (2nd edition)" Main content: in Java programming 78 very practical rules of experience, these rules of experience cover the problems faced by most developers every day solutions. A comprehensive description of the technologie

Effective Java (Chinese second edition) "PDF" Download Link:https://u253469.pipipan.com/fs/253469-230382186Java (second edition) "PDF" "title=" "Effective Java (Chinese second edition)" PDF ""/>Editor's recommendation"Sun's core Technology series: EffectiveThe Chinese version of Ja