hacktool final

Java string optimization The final keyword in Java can be used in class members (not called domains), in class methods, and in classes. The final is used in the domain to represent: 1, a constant amount of compilation that never changes. 2, a value that is initialized at run time, and you don't want it to be changed. The static keyword can be used in conjunction with the

1.static Final (constant)There are two ways to initialize:(1) Initialize at the time of declarationStatic final i = 1;You can also set the return value of a static method to itStatic Final int i = f (); Static Public int f () { return 1;}(2) initialization in the static Code fast (in general, if some code must be executed when the project is started, it is

resources in the software during class loadingApplication Scenarios: Often used to load static resources (pictures, audio, etc.) 2.3.1 Casepublicclass StaticKeywords { // 定义了一个静态块 static { // 存储在方法区中，在类加载的时候执行的代码块 System.out.println("静态块执行"); } publicstaticvoidmain(String [] args) { }}// 执行结果 静态块执行 // main函数中没有任何代码，但是还是打印了静态块的语句，说明静态块在所有类实例化之前执行3. Final keywordFinal-Modified member variables and me

Package Com.victor.test;import Java.util.random;public class Staticandfinaltest {private static random Rand = new Random ( ;p rivate static int statica = Rand.nextint (+);p rivate final int finalb = Rand.nextint (+);p rivate static final int s Taticfinalc = Rand.nextint (+);p ublic static void Main (string[] args) { staticandfinaltest saft1 = new Staticandfina Ltest (); System.err.println ("Saft1.stat

Java Memory Model-final, java model-final Compared with the locks and volatile described earlier, the read and write operations on the final domain are more like common variable access. For final domains, the compiler and processor must follow two reordering rules: Below, we will illustrate these two rules through some

Java study notes 18 --- final keywords modify variables, methods, and classes, study notes 18 --- final The word final in English is known as "final". In fact, it also means"Unchangeable". In Java,The final keyword is "unchangeable" to better explainThat is, the

Final modifier, final Modifier When final modifies a variable, it indicates that the variable cannot be changed once the initial value is obtained,The final variable cannot be assigned a new value after obtaining the initial value. Therefore, the final modification of the m

2016/09/21 Java keyword final, 2016 final1. final class The final class cannot be inherited and has no subclass. The methods in the final class are final by default. The final class cannot be inherited. Therefore, the member metho

Final Class A {}, so that the defined Class A is the final class, the final class cannot be inherited, that is, the code cannot be written, class B extends a {}.final void B () {}, the method defined is the final method, and the final