I have an assignment and my superclass default values always override the values I pass in the Test main method. In the debugger, i see the passing of the productNumber(1234) and productTitle("Daughter"), but then it's overridden with the default values. Any thoughts, i keep making minor changes, checking for changes, still the same results.
Product Superclass
public abstract class Product {
private int productNumber;
private String productTitle;
//Two constructors required
public Product(){
productNumber = 0;
productTitle = "";
}
public Product(int productNumber, String productTitle) {
this.productNumber = productNumber;
this.productTitle = productTitle;
}
public void setProductNumber(int productNumber) {
this.productNumber = productNumber;
}
public int getProductNumber() {
return productNumber;
}
public void setProductTitle(String productTitle) {
this.productTitle = productTitle;
}
public String getProductTitle() {
return productTitle;
}
//Override toString() required
@Override
public String toString() {
return productNumber + " " + productTitle;
}
// Required Product class declares abstract method with this signature: public String getDisplayText()
public abstract String getDisplayText();
//Override equals() required
@Override
public boolean equals(Object object) {
if (object instanceof Product) {
Product product2 = (Product) object;
if (productNumber == (product2.getProductNumber()) &&
productTitle.equals(product2.getProductTitle())){
return true;
}
}
return false;
}
}
Music Subclass extends Product Superclass
public class Music extends Product {
private String artist;
private String style;
private String medium;
public Music() {
super();
artist = "";
style = "";
medium = "";
}
public Music(int productNumber, String productTitle, String artist, String style, String medium) {
super();
this.artist = artist;
this.style = style;
this.medium = medium;
}
public String getArtist() {
return artist;
}
public void setArtist(String artist) {
this.artist = artist;
}
public String getStyle() {
return style;
}
public void setStyle(String style) {
this.style = style;
}
public String getMedium() {
return medium;
}
public void setMedium(String medium) {
this.medium = medium;
}
@Override
public String getDisplayText() {
return super.toString() + " by " + artist + " " + style + " " + medium;
}
@Override
public boolean equals(Object object){
if (object instanceof Music){
Music m = (Music) object;
if (artist.equals(m.getArtist()) &&
style.equals(m.getStyle()) &&
medium.equals(m.getMedium())){
return true;
}
}
return false;
}
}
Print String
public class Test {
public static void main(String[] args) {
// Expected result: 1234 Daughter by Pearljam Alternative online
Music music1 = new Music(1234,"Daughter", "Pearljam","Alternative","online");
System.out.println(music1.getDisplayText());
}
}
you are not passing values from subclass to your parentclass
instead of super() you need to do below -
super(productNumber,productTitle);
update needed in your code :-
public Music(int productNumber, String productTitle, String artist, String style, String medium) {
super(productNumber,productTitle);
this.artist = artist;
this.style = style;
this.medium = medium;
}