Java库存编程

Question

C:\Users\gator\Documents\InventoryPart1.java:101: cannot find symbol
symbol  : constructor Television(java.lang.String,java.lang.String,int,double)
location: class Television
        Television sony = new Television ("SONY368", "Sony Vega", 2, 899.99);
                          ^

1 个错误 这是我尝试编译下面的 java 代码时遇到的错误: 我需要知道要更改什么才能编译它，有人可以帮忙吗？我不明白错误消息中的 int。

//Author:           Walter Rutherford
//Date:             Feb. 03/2011
//Class:            IT/215 week five inventory program 1

import java.text.NumberFormat;
import java.util.Locale;
import java.util.Scanner;

class Television {

    private String itemNumber;
    private String productName;
    private double units;
    private double unitPrice;
    private double unitsTotal;
    //constructor
    public Television (String itemNumber, String productName, double units, double unitprice, double unitsTotal) {
        setItemNumber(itemNumber);
        setProductName(productName);
        setUnits(units);
        setUnitPrice(unitPrice);
        unitsTotal = units ++;
    }

    //accessor methods for class variables
    public String getItemNumber () {
        return itemNumber;
    }

    public void setItemNumber (String itemNumber) {
        this.itemNumber = itemNumber;
    }

    public String getProductName () {
        return productName;
    }

    public void setProductName (String productName) {
        this.productName = productName;
    }

    public double getUnits () {
        return units;
    }

    public void setUnits (double units) {
        this.units = units;
    }

    public double getUnitPrice () {
        return unitPrice;
    }

    public void setUnitPrice (double unitPrice) {
        this.unitPrice = units * unitPrice;
    }

    public double getUnitsTotal () {
        return unitsTotal;
    }

    public void setUnitsTotal (double unitsTotal) {
        this.unitsTotal = units ++;
    }


}

public class InventoryPart1 {

    public static void main (String args[]) {


        int units;

        double unitPrice;

        double unitsTotal;
        unitsTotal = units ++;

        double unitsPrice;
        unitsPrice = units * unitPrice;

        double unitsTotalPrice;
        unitsTotalPrice = unitsTotal * unitPrice;

        double totalInventory;
        totalInventory = unitsTotal * unitsTotalPrice;


        NumberFormat nf = NumberFormat. getCurrencyInstance(Locale.US);

        //create an instance of the Television class
        Television sony = new Television ("SONY368", "Sony Vega", 2, 899.99);

        //use the methods from class Television to output the inventory details.
        System.out.println("Item Number: " + sony.getItemNumber());

        System.out.println("Product Name: " + sony.getProductName());

        System.out.print("Number of Units: ");
        System.out.println(nf.format(units));

        System.out.print("Unit Price: ");
        System.out.println(nf.format(unitPrice));

        System.out.print("Units Total: ");
        System.out.println(nf.format(unitsTotal));

        System.out.print("Units Total Price: ");
        System.out.println(nf.format(unitsTotalPrice));

        System.out.print("Total Inventory: ");
        System.out.println(nf.format(totalInventory));
    }

}

Answer 1

您的构造函数需要 5 个参数，而您尝试仅使用 4 个参数来调用它。Java 是否应该尝试为缺少的参数发明一个值？