I'm new in JAVA and I have a project

[mzone]

"Write a Java Program to let user enter certain number of students names and grades first. Then let your program find maximum, minimum, average, and the standard deviation of the grades using separate methods for each case and print the results. Finally, write a method to sort the names then print student names and grades in the descending order with respect to the grades. Get the number of students from the user, then create two arrays, String and int types to store student names and grades respectively (two dimensional array usage is optional). Write the necessary methods and print the necessary values and at the end sort the student names with respect to the grades in the descending order."

Hey Guys, this is my project and i have to train it until tomorrow night :)
Can you help me a little bit, please ??
Thank you for all :)

[DarrylBurke]

Can you help me a little bit, please ??

Sure. Lets see what you've done so far. Ask a specific question and you're guaranteed to get an answer.

db

[mzone]

i have done this

import java.util.Scanner;
import javax.util.*;
public class Project{


public static void main(String[] args) {

Scanner input= new Scanner (System.in);

System.out.println("Please,Enter certain number of students names and grades:");

int N = input.nextInt(); //N is certain number of Students names and grades

System.out.println("Your certain number of students names is:" + N);

String[] studentnames =new String[N];


int[] grades= new int[N];




}
}

[mzone]

you can help me how i can get student names and grades from user , and how i can appoint a two diomensional array ??

[EscSequenceAlpha]

Please use the CODE tags makes it easier to see

[mzone]

what is the Code tags?

[EscSequenceAlpha]

import java.util.Scanner;
import javax.util.*;
public class Project{


public static void main(String[] args) {

Scanner input= new Scanner (System.in);

System.out.println("Please,Enter certain number of students names and grades:");

int N = input.nextInt(); //N is certain number of Students names and grades

System.out.println("Your certain number of students names is:" + N);

String[] studentnames =new String[N];


int[] grades= new int[N];




}
}

[mzone]

oke thanks

[EscSequenceAlpha]

first of all you should use a loop to input values in an array

int[] grades = new int[10];
		
		for( int i = 0 ; i < grades.length ; i++)
		{
			Scanner input = new Scanner(System.in);
			System.out.println("please input grade for student ");
			grades[i] = input.nextInt();

you can look up multidimentional arrays, I did a task on that a few days ago. basically they are an array of arrays, with the first representing rows and the latter columns.

[mzone]

well, now how can i get student names from user?

[mzone]

first of all you should use a loop to input values in an array

int[] grades = new int[10];
		
		for( int i = 0 ; i < grades.length ; i++)
		{
			Scanner input = new Scanner(System.in);
			System.out.println("please input grade for student ");
			grades[i] = input.nextInt();

you can look up multidimentional arrays, I did a task on that a few days ago. basically they are an array of arrays, with the first representing rows and the latter columns.

This is so useful for me thank you :)

[mzone]

I have to get student names from user how can i do this?

[DarrylBurke]

I/O from the Command Line (The Java™ Tutorials > Essential Classes > Basic I/O)

db

[danoc93]

Use scanner class and read a String called name[i] (from an array of names), then u can use grade[i] and name[i] to get the name and grade corresponding the number i...

[DarrylBurke]

u can use grade[i] and name[i] to get the name and grade corresponding the number i...

Parallel array anti-pattern. Java is an object oriented language.

Also, please spell words in full. You not u. This is a programming forum, not SMS chat.

db