// Java program to demonstrate example of static block. import java.util.*; public class StaticBlock { //static variables static int a; static int b; static int c; //static block1 static { System.out.println("I'm in static block 1."); a = 10; } //static block2 static { ...
在Java 中,静态代码块(static block)是一种特殊的代码块,它属于类本身,而不是类的实例。静态代码块在类加载时执行,并且只执行一次。它的主要作用是为类的静态成员变量进行初始化或其他需要在类加载时完成的操作。 一、静态代码块的基本语法 静态代码块的定义方式如下: publicclassExample{static{// 静态代码块的...
解析:将符号引用转成直接引用; 初始化:激活类的静态变量的初始化Java代码和静态Java代码块。 初始化类中属性是静态代码块的常用用途,但只能使用一次。 (二)静态代码块的初始化顺序 class Parent{ static String name = "hello"; { System.out.println("parent block"); } static { System.out.println("parent...
When the class is loaded in the memory this block is executed automatically by Java Virtual Machine. Example A Java program that demonstrates the static block is given below ? Open Compiler class Demo{ static int val_1; int val_2; static{ val_1 = 67; System.out.println("The static ...
在Java 编程中,静态代码块(static block)是一个重要的概念。它往往被用来初始化静态变量或者执行一些只需要执行一次的操作。本文将深入探讨 static 代码块的工作原理、用法,以及一个简单的代码示例,以帮助初学者更好地理解这一特性。 什么是 Static 代码块?
view raw Main.java This Gist brought to you by GitHub. 输出: static block in Base static function in Base! -- Mr. Base static block in Extend Mr. Base Mr. Extend 陷阱1www.2cto.com 可见在执行 Extend.functionInBase(); 时类Extend中的静态代码块并未被执行,要让其执行的充分条件可以是(满...
Static Block:Static block is a onetime execution block of java class. It executes automatically when JVM loads java class. It is useful to initialize static member's variables of class. Constructor:It is object level one time execution block. When JVM creates object for a class then constructor...
JavaObject Oriented ProgrammingProgramming A static block is a block of code with a static keyword. In general, these are used to initialize the static members. JVM executes static blocks before the main method at the time of class loading. Example Live Demo public class MyClass { static{ ...
The output of the above static keyword in java example program is: StaticExample static block StaticExample static block2 5 abc is same as abc true 10 20 Notice that static block code is executed first and only once as soon as class is loaded into memory. Other outputs are self-explanatory...
Example 1: Single static block As you can see that both the static variables were intialized before we accessed them in the main method. classJavaExample{staticintnum;staticStringmystr;static{num=97;mystr="Static keyword in Java";}publicstaticvoidmain(Stringargs[]){System.out.println("Value ...