对象和参考在示例中 [英] Object and reference In the example

问题描述

对象和引用在示例中:

SomeObject aRef = new SomeObject();在此示例中，哪个对象和引用....

Object and reference In the example:

SomeObject aRef = new SomeObject(); In this example which one object and reference....

推荐答案

aRef是对使用SomeObject()构造函数创建的对象的有效引用.

aRef is a valid reference to the object created with SomeObject() constructor.

这里，aRef不是对象，它是一个包含对对象的引用的变量.对象没有名称，只是内存中的类型和位置(当然还有字段和方法).读取以下语句:在内存中创建一个新的SomeObject对象，使用作为构造函数的参数发送的数据对其进行初始化，并在创建时将对该对象的引用分配给SomeObject变量aRef. aRef是引用或对象类型变量，可以引用SomeObject对象或SomeObject的任何子类的对象.

Here, aRef is not an object, it''s a variable which contains a reference to an object. Objects don''t have names, just types and locations in memory (and, of course,fields and methods). Read your statement as: Create a new SomeObject object in memory, initializing it with the data sent as arguments to a constructor, and when created, assign a reference to that object to the SomeObject variable aRef. aRef is a reference or object type variable which may reference a SomeObject object or an object of any subclass of SomeObject.

Using anonymous Inner class concept we can create an object for an interface…..

Here is a sample code

interface Sample {
public void method();
}

class Outer {
Sample s = new Sample() {
public void method() {
System.out.println("Inner class");
}
};
}

public class Example {
public static void main(String args[]) {
Outer o = new Outer();
o.s.method();
}
}

Output: Inner class

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