A block in Java is a collection of zero or more program code statements, enclosed in curly braces {}, that perform a specific task. The purpose of a block is to allow a number of statements to be executed where a single statement normally would. For example, consider the following: St...
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 block has been called."); } } public class Main{ public static void main(String args[]){ System.out...
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...
publicclassStaticBlockExample{static{System.out.println("Static block executed");}publicstaticvoidmain(String[]args){System.out.println("Main method executed");}} Here, the static block is executed once when the class is loaded into memory, before the main method is executed. ...
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...
parent static block child static block parent block parent constructor child block child constructor 分析:当执行new Child()时,它首先去看父类里面有没有静态代码块,如果有,它先去执行父类里面静态代码块里面的内容,当父类的静态代码块里面的内容执行完毕之后,接着去执行子类(自己这个类)里面的静态代码块,当...
It is important to note that static method can only access static block or fields and other static methods of a class. This is because static methods can be used even if no object of that class has been created. We will show this in the example below. In case from the static method ...
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{ ...
System.out.println("static block initialized"); } public int getStatic(){ return s; } public void setStatic(int i){ s=i; } public static void main(String[] args) { // TODO Auto-generated method stub UseStatic classA= new UseStatic(); ...
In this code snippet I am going to tell youdifference between static block and constructor in javaby example. 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...