Question

I don’t understand why I’m getting these errors in the setInitialQuantity method declaration, does anyone mind taking a look?

public class Invoice
{
    private int quantity;
    private String partNum;
    private String partDesc;
    private double unitPrice;


    //constructor 
    public Invoice ( int initialQuantity, String partNumber, String partDescript, double unitPrice)
    {
        public void setInitialQuantity ( int initialQuantity )
        {
            quantity = initialQuantity;
        }   
    }//end Invoice constructor
}

Errors:

javac Invoice.java
Invoice.java:16: illegal start of expression
    public void setInitialQuantity ( int initialQuantity )
    ^
Invoice.java:16: illegal start of expression
    public void setInitialQuantity ( int initialQuantity )
           ^
Invoice.java:16: ';' expected
    public void setInitialQuantity ( int initialQuantity )
                                  ^
Invoice.java:16: ';' expected
    public void setInitialQuantity ( int initialQuantity )
                                                        ^
4 errors

Answer 1

You can’t have a method inside another (or a Concstructor) in Java, move it outside the constructor but inside the class.

public class Invoice
{
    private int quantity;
    private String partNum;
    private String partDesc;
    private double unitPrice;


    //constructor 
    public Invoice ( int initialQuantity, String partNumber, String partDescript, double unitPrice)
    {
    }//end Invoice constructor

public void setInitialQuantity ( int initialQuantity )
    {
            quantity = initialQuantity;
    }   

}