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Thread: Subclass help
- 05-30-2010, 03:25 AM #1
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Subclass help
I have an assignment for school and cannot seem to get past one part. I cannot seem to call from one class to my subclass. Can you help?
I have three different classes. Main, Product, and director.
This is the error that I get.Java Code:public class Main { public static void main(String args[] ) // main method begins program execution { // create Scanner to obtain input from command window System.out.println( "Welcome to Inventory Program Part 3!" ); // display a welcome message Product[] Product = new Product[50]; // an array of 50 products Product[0] = new Product( "Resevoir Dogs", 1, 90, 12.99); Product[1] = new Product( "Pulp Fiction", 2, 80, 12.99 ); Product[2] = new Product( "Four Rooms", 3, 40, 10.99 ); Product[3] = new Product( "Kill Bill 1", 4, 50, 15.99 ); Product[4] = new Product( "Kill Bill 2", 5, 50, 17.99 ); Product[0].showInventory(); // display the inventories one at a time Product[1].showInventory(); Product[2].showInventory(); Product[3].showInventory(); Product[4].showInventory(); for ( int i = 0; i < args.length; i++ ) // sort products by name System.out.println( args[i] + ", " ); double array[] = { 1169.10, 1039.20, 439.60, 799.50, 899.50 }; double total = 0; for ( int counter = 0; counter < array.length; counter++) // add each element's value to total total += array[ counter ]; System.out.printf( "\nTotal inventory value is: $%.2f\n", total ); System.out.println( "\nThank you for using Inventory Program Part 3!\n" ); } // end method main } // end class Inventory3 class Product { static int length; public String productName; public int productNumber; public int productUnits; public double productPrice; //default constructor public Product() { productName = ""; productNumber = 0; productUnits = 0; productPrice = 0.00; } //parametized constructor public Product(String name, int number, int units, double price) { this.productName = name; this.productNumber = number; this.productUnits = units; this.productPrice = price; } public void setProductName( String name ) // set products name { this.productName = name; } // end method set products name public String getProductName() // return products name { return productName; } // end method get products name public void setProductNumber( int number ) // set products number { this.productNumber = number; } // end method set products number public int getProductNumber() // return products number { return productNumber; } // end method get products number public void setProductUnits( int units ) // set products in stock { this.productUnits = units; } // end method set products units public int getProductUnits() // return products units { return productUnits; } // end method get products units public void setProductPrice( double price ) // set products price { this.productPrice = price; } // end method set products price public double getProductPrice() // return products price { return productPrice; } // end method get products price public double getValue() // calculate products inventory value { return productUnits * productPrice; } // end method products inventory value public void showInventory() // display inventory { System.out.println();// outputs blank line System.out.println( "Product Name: " + productName ); System.out.println( "Product Number: " + productNumber ); System.out.println( "Units in Stock: " + productUnits ); System.out.printf( "Unit Price: $" + productPrice ); director Product = new director( "Resevoir Dogs", 1, 90, 12.99, "Quentin Tarentino" ); System.out.println( "\nDirector: " + Product.getDirector() ); System.out.printf( "\nInventory value of "+ productName + " is = $%.2f\n", getValue() ); // display the value } // end display inventory } // end class products class director extends Product { private String productDirector; // holds the products director public director( String productName, int productNumber, int productUnits, double productPrice, String director ) // five-argument constructor { Product ( productName, productNumber, productUnits, productPrice ); productDirector = director; } // end five-argument constructor public void setDirector( String director ) // set products director { this.productDirector = director; } // end method set products director public String getDirector() // return products director { return productDirector; } // end method get products director @Override public double getValue() // add 5% restocking fee { return getValue() * .05; } // end method return products director public double getRestockingFee() // calculate restocking fee { return getValue() * .05; } //end method calculate restocking fee @Override public String toString() //return String representation of productsDirector { String formatString = "Director: %s"; formatString += "Restocking Fee: $%.2f"; formatString = String.format( formatString, productDirector, getValue() * 0.05 ); return( formatString + super.toString() ); } // end toString() @Override public void showInventory() // display inventory { super.showInventory(); System.out.println( toString() ); System.out.printf( "\nInventory value of " + productName + " is = $%.2f\n", getRestockingFee() ); // Display value plus restocking fee } // end method display inventory } // end class director
Welcome to Inventory Program Part 3!
Product Name: Resevoir Dogs
Product Number: 1
Units in Stock: 90
Exception in thread "main" java.lang.RuntimeException: Uncompilable source code
at director.<init>(director.java:12)
at Product.showInventory(Product.java:89)
at Main.main(Main.java:24)
Unit Price: $12.99Java Result: 1
BUILD SUCCESSFUL (total time: 2 seconds)
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You shouldn't try to run this until you get it to compile first. So the key is in the error that the compiler is telling you, not this. Hint: you call a super constructor with the keyword "super" not with the name of the super class.
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