User Input Student Information - Print Out Name With Grade In Descending Order

Nov 23, 2014

I had to make a program that allowed the user to enter the number of students and the students names and grades and then print out the name with the grade in descending order. right now I only have it where it prints the names out in descending order. how do I get it the print out with the grade?

Here is my code

import java.util.*; 
public class Grades {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.print("Enter the number of students: ");
int numofstudents = input.nextInt();

[Code] .....

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[Code].....

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Alright so I wrote a switch statement that decides what range to print based on the letter grade input.

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[code]...

It works fine, but once it the user enters a letter grade and then displays the value, it does not prompt the user for another letter grade so that it can perform the output again. Also if I wanted to display an error message to the user if they enter an invalid letter grade how would I do that. I tried using a while loop and if statement in the switch statement but that didn't work.

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colonnaColore.setCellFactory(param -> {
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[Code] ....
 
In few words: there is a cell factory on the cell to show a colored box, then I added a tooltip to the cell. I need informations that are in the item added to the TableView that has type "Appuntamento". So I try to get my element with these code (that in others part of my code works); but here I get a Null Pointer Exception on cell.getTableView() and also on cell.getTableRow().
 
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import java.util.Scanner;
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[Code] ....

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import java.util.Arrays;
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[Code]...

BUT I GET THE FOLLOWING EROOR ON COMPILATION

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^
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[Code] .....

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[Code] .....

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[Code] ....

I tried to declare a previousElement variable but I didn't figure out how I'd do that.

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/*
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/*
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擷取.PNG
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擷取1.PNG

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[Code] ....

And this is what the output looks like:

Actual output
-------------------------------------------
Enter an integer: 5
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When it's supposed to look like this:

Expected output
-------------------------------------------
Enter an integer: 5
Enter an integer: 10
Enter an integer: -4
Enter an integer: 8
Enter an integer: -6
Enter an integer: 11
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Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 20
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2.49 ≥ gpa ≥ 2.00 Pass
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Here is my code:

import java.io.*;
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[code]...

.But when I use Command console to run this it says: 1111.jpg. I also wanna know is there another way to do this with switch- case statements.

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