CODEWITHSUNDEEP
javastringinheritance
bob afro
bob afro

Reputation: 213

How to access String from one class to another?

So for example I have 2 classes and one interface.

public class mainClass {

    private String word;

}



public interface intWord {

     public String getOutput();

     public void setInput( String input );

     public void setLevel ( int level );

}



public class secondClass implements intWord {

//class I want to be able to access 'word' from mainClass without extending it.

     public String getOutput()    {

     }

     public void setInput( String input )    {

     }

     public void setLevel ( int level )    {

     }

}

How do I go about accessing "word" in my secondClass without extending mainClass to it? I believe I can add some helper methods somewhere to make it easy....but I can't figure it out!

Upvotes: 0

Views: 87

Answers (4)

Falla Coulibaly
Falla Coulibaly

Reputation: 769

One way to do assuming you want to use "word" as parameter for your setInput method will be to have an instance of mainClass and a getter to access the field word. Here is what it will look like:

public static void main( String args[])
{
    // Assuming word is not null
    secondClass second_class = new secondClass ();
    secondclass.setInput(mainClass.getWord());
}

The other way will be to have your field word be sa static variable and return it with a static getter(Not recommended). Here is what you mainClass should look like:

public class mainClass {

     private static String word;

     public static String getWord(){
        return word;
     }
}

And here is how you will access it:

public static void main( String args[])
{
    mainClass mainclass = new mainClass();
    // Assuming word is not null
    secondClass second = new secondClass ();
    secondclass.setInput(mainClass.getWord());
}

Upvotes: 1

Suyash
Suyash

Reputation: 525

The best way is to create setters and getters for private String word; in mainClass and create an object of mainClass in secondClass and access the getters and setters to get/set the value of word. Another thing, if you know that word is global variable then you can create it as public string word; instead of private and extend mainClass in secondClass so as to access it directly.

Just for your knowledge java follows convention where class name should start with capital letter and then follow camel case.

Upvotes: 0

Benjamin Lowry
Benjamin Lowry

Reputation: 3799

In your mainClass you can add a "getter" method, as seen below

 public class mainClass {

    private String word;

    public String getWord(){
         return word;
    }

 }

And just call getWord() from your second class

You can also dynamically set your word value from your second class by adding a setter method:

 public void setWord(String newWord){
      word = newWord;
 }

Upvotes: 2

star2wars3
star2wars3

Reputation: 83

Try a getWord() and a setWord(String word)

Function Within mainClass and go from there.

Upvotes: 1

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