Can't figure out simple error message
public int findAccount(int accountNum)
int i;
for(i = 0; i < accountCount; i++)
if(accounts[i] = accounts[accountNum])
return i;
else
return -1;
It gives me this error message:
C:\bank\Bank.java:79: incompatible types
found : support.BankAccount
required: boolean
if(accounts[i] = accounts[accountNum])
^
1 error
the source code didn't put the post right, it should have the array accounts with the i index, I'm sure you know what I mean, its only putting accounts
Actually, it should be:
for(i = 0; i < accountCount; i++){
if(accounts == accounts[accountNum])
return i;
else
return -1;
to correct the syntax error. You may still have logic errors but this clears up the syntax error. Note the DOUBLE equals, in Java conditionals and iterators must take booleans (no auto-downcasting), in addition, the double equals only checks for reference equality, not value equality. To check for value equality between objects, you should use foo.equals(bar) and overload equals(). Hope this helps.
silentOpen
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// Rectangle.java
public class Rectangle
private double width;
private double length;
private double area;
private double perimeter;
public void double setWidth(x) **********
width = (x > 0.0 && x < 20.0)w ?: 1;
public void double setLength(y)
length = (y > 0.0 && y < 20.0)y ?: 1;
public double getWidth()
return width;
public double getLength()
return length;
public double cArea()
area = length * width;
return area;
public double cPerimeter()
perimeter = (2 * length) + (2 * width);
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} ^^^^^^^^^^at ********** I am getting <identifer> expected
and at ^^^^^^^^^^ I am getting '(' expected
please help!
Message was edited by:
Green_Ops
Message was edited by:
Green_Ops
nullok, I have made some changes to the code, which is all I've been doing for the past couple days trying to figure this out.
I made all the changes that you guys pointed out. But I'm still getting the same errors, in the same places. And what I don't understand, is that I have the same code declaring another method, (setLength), and that one doesn't have the error. ???
// Rectangle.java Phillip Barrios
public class Rectangle
private double width;
private double length;
private double area;
private double perimeter;
public void double setWidth(double x)
width = (x > 0.0 && x < 20.0)x ?: 1;
public void double setLength(double y)
length = (y > 0.0 && y < 20.0)y ?: 1;
public double getWidth()
return width;
public double getLength()
return length;
public double cArea()
area = length * width;
return area;
public double cPerimeter()
perimeter = (2 * length) + (2 * width);
return perimeter;
} -
Can't figure out this error...
The assignment is to create a program that uses a class to store information about DVDs and then diplay the information.
One error is "cannot find symbol, symbol: constructor Dvd(), location: class Dvd, Dvd mydvd = new Dvd();
The other error is "cannot find symbol, symbol method calculateValue(), location class DvdTest, System.out.println("The value in inventory is $", calculateValue() );
Here's my code:
{code// EmployeeInfo class created by Michelle Groves
// Last edited April12 09
public class DvdTest
public static void main(String args [])
Dvd mydvd = new Dvd();
Dvd[] prodArray = new Dvd[2]; // creat an array
prodArray[0] = new Dvd( 231562, 7.49, 2, "Cars" );
prodArray[1] = new Dvd( 231562, 7.49, 2, "Toy Story" );
// Displays first element's info
System.out.println("The stock number is " + prodArray[0].getstockedDvds());
System.out.println("Priced at " + prodArray[0].getdvdPrice());
System.out.println("Inventory contains " + prodArray[0].getstockedDvds());
System.out.println("The title is " + prodArray[0].getdvdName());
// Displays second element's info
System.out.println("The stock number is " + prodArray[1].getstockedDvds());
System.out.println("Priced at " + prodArray[1].getdvdPrice());
System.out.println("Inventory contains " + prodArray[1].getstockedDvds());
System.out.println("The title is " + prodArray[1].getdvdName());
System.out.println("The value in inventory is $", calculateValue() );
} //end main
} // end class
class Dvd
private int dvdNumber; // DVD Product Number
private double dvdPrice; // price of DVD
private double stockedDvds; // number of units in stock
private String dvdName; // name of DVD
public Dvd( int dvdNumber, double dvdPrice, double stockedDvds,
String dvdName ) // constructor for dvd
dvdNumber = 0;
dvdPrice = 0.0;
stockedDvds = 0.0;
dvdName = "";
} // end constructor
// method to set DVD number
public void setdvdNumber( int dvdNumber )
dvdNumber = dvdNumber; // store DVD number
} // end method setdvdNumber
// method to retrieve DVD number
public double getdvdNumber()
return dvdNumber;
} // end method getdvdNumber
// method to set DVD price
public void setdvdPrice( double dvdPrice )
dvdPrice = dvdPrice;
} // end method setdvdPrice
// method to retrieve DVD price
public double getdvdPrice()
return dvdPrice;
} // end method getdvdPrice
// method to set stocked number of DVDs
public void setstockedDvds( double stockedDvds )
stockedDvds = stockedDvds;
} // end method setstockedDvds
// method to retrieve stocked number of DVDs
public double getstockedDvds()
return stockedDvds;
} // end method getstockedDvds
// method to set DVD Name
public void setdvdName( String dvdName )
dvdName = dvdName;
} // end method setdvdName
// method to retrieve DVD name
public String getdvdName()
return dvdName;
} // end method getstockedDvds
// method to calculate pay for week
public double calculateValue()
return dvdPrice * stockedDvds;
} // end method total
} // end classHere's my code a little more readable:
// EmployeeInfo class created by Michelle Groves
// Last edited April12 09
public class DvdTest
public static void main(String args [])
Dvd mydvd = new Dvd();
Dvd[] prodArray = new Dvd[2]; // creat an array
prodArray[0] = new Dvd( 231562, 7.49, 2, "Cars" );
prodArray[1] = new Dvd( 231562, 7.49, 2, "Toy Story" );
// Displays first element's info
System.out.println("The stock number is " + prodArray[0].getstockedDvds());
System.out.println("Priced at " + prodArray[0].getdvdPrice());
System.out.println("Inventory contains " + prodArray[0].getstockedDvds());
System.out.println("The title is " + prodArray[0].getdvdName());
// Displays second element's info
System.out.println("The stock number is " + prodArray[1].getstockedDvds());
System.out.println("Priced at " + prodArray[1].getdvdPrice());
System.out.println("Inventory contains " + prodArray[1].getstockedDvds());
System.out.println("The title is " + prodArray[1].getdvdName());
System.out.println("The value in inventory is $", calculateValue() );
} //end main
} // end class
class Dvd
private int dvdNumber; // DVD Product Number
private double dvdPrice; // price of DVD
private double stockedDvds; // number of units in stock
private String dvdName; // name of DVD
public Dvd( int dvdNumber, double dvdPrice, double stockedDvds,
String dvdName ) // constructor for dvd
dvdNumber = 0;
dvdPrice = 0.0;
stockedDvds = 0.0;
dvdName = "";
} // end constructor
// method to set DVD number
public void setdvdNumber( int dvdNumber )
dvdNumber = dvdNumber; // store DVD number
} // end method setdvdNumber
// method to retrieve DVD number
public double getdvdNumber()
return dvdNumber;
} // end method getdvdNumber
// method to set DVD price
public void setdvdPrice( double dvdPrice )
dvdPrice = dvdPrice;
} // end method setdvdPrice
// method to retrieve DVD price
public double getdvdPrice()
return dvdPrice;
} // end method getdvdPrice
// method to set stocked number of DVDs
public void setstockedDvds( double stockedDvds )
stockedDvds = stockedDvds;
} // end method setstockedDvds
// method to retrieve stocked number of DVDs
public double getstockedDvds()
return stockedDvds;
} // end method getstockedDvds
// method to set DVD Name
public void setdvdName( String dvdName )
dvdName = dvdName;
} // end method setdvdName
// method to retrieve DVD name
public String getdvdName()
return dvdName;
} // end method getstockedDvds
// method to calculate pay for week
public double calculateValue()
return dvdPrice * stockedDvds;
} // end method total
} // end class -
Error in exception can't figure out why?
hi
iam new to oracle ..can't figure out the error in this code..
set serveroutput on
declare
e_m exception;
pragma_exception_init(e_m,-1400);
begin
insert into dept_dup(dno) values(nULL);
exception
when e then
raise_application_error(-20000,'exception e');
end;
thank u
rajivThis compiles OK:
SQL>
SQL> set serveroutput on
SQL>
SQL> drop table dept_dup;
Table dropped.
SQL>
SQL> create table dept_dup(dno number);
Table created.
SQL>
SQL> declare
2 e_m exception;
3 pragma exception_init(e_m,-1400);
4 begin
5 insert into dept_dup(dno) values(NULL);
6 exception
7 when e_m then
8 raise_application_error(-20000,'exception em');
9 end;
10 /
PL/SQL procedure successfully completed.
SQL> show errors
No errors.
SQL>
SQL> exitReading the PL/SQL docs can also help: http://download-uk.oracle.com/docs/cd/B19306_01/appdev.102/b14261/errors.htm#sthref2000
Message was edited by:
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