Marks programm

[blackmoon]

Hi, i have to programm a markssaver:

which is able to

1. i give it some marks
2. it saves this marks
3. it saves the number of students
4. it gives me back the marks + the students+ the average

do someone knows about such a programm code for me (java)?
can i download it somewhere?

i'm looking forward to hearing from you
thxxx

[zweibieren]

I googled "class grades" and got a bunch of choices.
Rule 12: Never program for yourself what others have already done.

Many teachers get by with just a spreadsheet.

[Fubarable]

So let me get this straight: you have an assignment to do, and you're asking folks here to find the code for you so you can hand it in as your own? Am I missing anything? You're not studying to be a politician are you?

[zweibieren]

Here's some notes that may help.
The important design step is to focus on interfaces:

• How does the program get the data from the user?
  Prompt for a line where each line has name and grade
  OR prompt separately for each name and each grade?
• How is the data stored in a file? Typically each line in the file
  has a name and grade separated by a special character like a colon.
• What is the in-memory representation of the data?
  Possibly a new class called GrayList which extends ArrayList
  and contains Grade objects where each has a name and grade.
• What is the format of the output?

Now write GrayList methods to read into a GrayList list from the console,
write a GrayList to a file, read a file into a GrayList,
and compute the average from a GrayList.
The final program more or less just calls these methods.

[sky]

Here's some notes that may help.
The important design step is to focus on interfaces:

• How does the program get the data from the user?
  Prompt for a line where each line has name and grade
  OR prompt separately for each name and each grade?
• How is the data stored in a file? Typically each line in the file
  has a name and grade separated by a special character like a colon.
• What is the in-memory representation of the data?
  Possibly a new class called GrayList which extends ArrayList
  and contains Grade objects where each has a name and grade.
• What is the format of the output?

Now write GrayList methods to read into a GrayList list from the console,
write a GrayList to a file, read a file into a GrayList,
and compute the average from a GrayList.
The final program more or less just calls these methods.

Just curious, is it the same to declare the ArrayList like this:

ArrayList<Grades> list = new ArrayList<Grades>();

than to create a new class that extends ArrayList?

[zweibieren]

A class extending ArrayList can have methods.

class GrayList extends ArrayList<Grade> {

    public void method(...) { ... }

}

or even

ArrayList<Grades> list = new ArrayList<Grades>() {

    public void method(...) { ... }

};