Java how to access the property of instance of another class in the instance of outer class?

Question

I may use incorrect terms, sorry in advance. I need to access a property from instance of another class that is located in the the instance of outer class. There will be two instances of class Outer and I need to store and process property "desiredProperty" for each of them individually. Note: All classes are different. Inner1 and Inner2 are not the same classes! Here is a simple example.

File 1:

public class Outer{

public Inner1 inner1 = new Inner1();
public Inner2 inner2 = new Inner2();

}

File 2:

public class Inner1 {

int desiredProperty=1;

}

File 3:

public class Inner2{

public int getDesiredProperty(){

//How can I here access the property DesiredProperty from Inner1?

}

}

You need to have a reference to an instance of Inner1. Are the classes related in any way (or just called Outer and Inner)? — Thilo
– Thilo, Commented Jan 23, 2013 at 7:09

fmodos · Accepted Answer · 2013-01-23 07:10:26Z

2

The Inner2 class need to have an instance property for Inner1

public class Inner2{

private Inner1 inner1;

public Inner2(Inner1 inner1){
   this.inner1 = inner1;
}

public int getDesiredProperty(){
    return inner1.getDesiredProperty();    
}

}

answered Jan 23, 2013 at 7:10

fmodos

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Comments

goravine · Accepted Answer · 2013-01-23 07:12:47Z

0

first make a setter getter function in the Inner1 class, so you can get/set the value on Inner1

public class Inner1 {

int desiredProperty=1;
public int getDesiredProperty()
{
    return this.desiredProperty;
}

public void setDesiredProperty(int val)
{
    this.desiredProperty = val;
}

}

and in Inner2 class

public class Inner2{

public int getDesiredProperty(){

//How can I here access the property DesiredProperty from Inner1?
Inner1 inner1 = new Inner1();
return inner1.getDesiredProperty(); //value from Inner1
}

}

answered Jan 23, 2013 at 7:12

goravine

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