java初始化顺序实验代码

最新推荐文章于 2025-03-12 19:52:56 发布

原创最新推荐文章于 2025-03-12 19:52:56 发布 · 547 阅读

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本文通过一个具体的Java程序示例，详细展示了类的构造过程、静态与非静态成员的初始化顺序，以及子类如何继承父类的过程。该示例包括了基类和派生类的构造函数调用顺序、静态变量初始化等关键概念。

class BaseVariable{
BaseVariable(){
System.out.println("BaseVariable" );
}
}

class SubVariable{
SubVariable(){
System.out.println("SubVariable" );
}
}

class BaseStaticVariable{
BaseStaticVariable(){
System.out.println("BaseStaticVariable" );
}
}

class SubStaticVariable{
SubStaticVariable(){
System.out.println("SubStaticVariable" );
}
}

class Base {

static BaseStaticVariable bsv = new BaseStaticVariable();
BaseVariable bv = new BaseVariable();

static{
System.out.println("Base static code" );
}

{
System.out.println("Base Constructor code");
}

public Base(){
System.out.println("Base Constructor");
}

}

class Sub extends Base{

public Sub(){
System.out.println("Sub Constructor");
}

{
System.out.println("Sub Constructor code");
}

SubVariable bv = new SubVariable();

static{
System.out.println("Sub static code" );
}

static SubStaticVariable bsv = new SubStaticVariable();
}

public class Test{
public static void main(String[] args) {
Base base = new Sub();
}
}