Question

I am having problems understanding how private and public variables work.
I am trying to fill the myStorage.outString variable from myThread.
But it seems I cannot see the setInString method from myThread.
Here is my example:

public class CT63_Console extends MIDlet {
    public Storage myStorage;
    public void startApp() {
        this.myStorage = new Storage();
    }
}

public class storage{
    private String[] outString;

    public Storage(){
        AClass myThread = new AClass();
        myThread.start();
    }
    public void setInString(String sendString){
        this.outString = sendString; //push seems not to be supported by MIDP
    }
}

public class AClass{
    public void run(){
        myFunction("write this into Storage var outString");
    }

    private myFunction(myString){
        myStorage.setInString(myString);
    }
}

What do I have to do to set the variable and why am I wrong?

Answer 1

You are trying to access myStorage without having a reference to it.
You could pass this reference when you create the AClass instance.

Also, you are trying to assign a String to an array of Strings which can’t be done.

public class Storage{
    private String outString;

    public Storage(){
        AClass myThread = new AClass(this);
        myThread.start();
    }
    public void setInString(String sendString){
        this.outString = sendString; //push seems not to be supported by MIDP
    }
}

public class AClass {
    Storage myStorage;

    public AClass(Storage s) {
        this.myStorage = s;
    }

    public void run(){
        myFunction("write this into Storage var outString");
    }

    private myFunction(String myString) {
        myStorage.setInString(myString);
    }
}