In java parent package class accessible from child packge class? please explain me any one?

example

package A.A1.A2 contains class sub

package A contains class sup

Is there anyway to access sup from sub?

pls explain.

i tried import it won't work

Example:

before the program Directory Structure is

package1 contains package1.java --> package2 --> package3 contains PCheck.java

//package1.java

package package1;

public class package1{

public static void main(String[] args) {

}

}

class phelo{

phelo(){

int a;

System.out.println("hai fun freom package 1");

}

}

//PCheck.java;

package package1.package2.package3;

import package1.*; //to import package1.java

public class PCheck {

public static void main(String[] args) {

phelo obj=new phelo();

}

}

class helo{

helo(){

int a;

System.out.println("hai fun from package 3");

}

}

output:

compile time error:package package1.package2.package3 doesnot exist;

for import class from different directory we use import statements but here we need access parent package from subpackage.i tried import it won't work pls explain with an example.

解決方案

Java does not recognize the notion of a subpackage. As far as Java is concerned packages a and a.b and a.b.c are unrelated. They are just names.

So, if you want to access a.b.SomeClass from a.b.c.SomeOtherClass, you must either use a fully qualified class name, or add an import to SomeeOtherClass

總結

以上是生活随笔為你收集整理的java中如何创建子包,父包类可以从java中的子包类访问？的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。