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Start your free trialRares Mosescu
2,001 PointsHow do I use custom constructor in another class?
I searched how to use a constructor on another class and it's how I've done. I can't figure out what's the problem...
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class LandingActivity extends AppCompatActivity {
public Button thrustButton;
public TextView typeLabel;
public EditText passengersField;
public Spaceship spaceship;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_landing);
thrustButton = (Button)findViewById(R.id.thrustButton);
typeLabel = (TextView)findViewById(R.id.typeTextView);
passengersField = (EditText)findViewById(R.id.passengersEditText);
// Add your code here!
spaceship = new Spaceship(shipType);
}
}
public class Spaceship {
private String shipType;
private int numPassengers = 0;
public String getShipType() {
return shipType;
}
public void setShipType(String shipType) {
this.shipType = shipType;
}
public int getNumPassengers() {
return numPassengers;
}
public void setNumPassengers(int numPassengers) {
this.numPassengers = numPassengers;
}
public Spaceship() {
shipType = "SHUTTLE";
}
public Spaceship(String shipType) {
this.shipType = shipType;
}
}
1 Answer
Steve Hunter
57,712 PointsHi there,
You use the customer constructor exactly as you have done. However, the parameter you pass in needs to be of the correct type. The constructor is:
public void setShipType(String shipType) {
this.shipType = shipType;
}
This parameter is a String
. Once you send the string into the constructor, it'll be referenced with the variable name shipType
in the instance of the class you just created. But you need to pass a string to the constructor. The challenge asks you to pass in "FIREFLY
" - that looks like:
spaceship = new Spaceship("FIREFLY");
I hope that helps,
Steve.
Rares Mosescu
2,001 PointsRares Mosescu
2,001 PointsThank you, Steve!
Steve Hunter
57,712 PointsSteve Hunter
57,712 PointsNo problem! I hope it made sense.