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  1. package project;
  2. import java.util.Scanner;
  3. public class Project
  4. {
  5.    public String [] name = new String [100];
  6.    public String [] name_course = new String [100];
  7.    public String code,id;
  8.    public int  c,a,sumhour=0;
  9.    public int [] hour = new int [100];
  10.    public float score,sumpoints=0f;
  11.    public float [] gpa = new float [100];
  12.    public float [][]points=new float[100][100];
  13.    public void Student()
  14.    {
  15.        Scanner s=new Scanner (System.in);
  16.        Scanner d=new Scanner (System.in);
  17.        System.out.println("enter a number of student");
  18.        c=s.nextInt();
  19.        for(int i=0;i<c;i++)
  20.        {
  21.        System.out.println("enter name of student "+(i+1));
  22.        name[i]=d.nextLine();
  23.        System.out.println("enter id of student "+(i+1));
  24.        id=d.nextLine();
  25.        }
  26.    }
  27.    public void Course()
  28.    {
  29.        Scanner s=new Scanner (System.in);
  30.        System.out.println("enter a number of course for students");
  31.            a=s.nextInt();
  32.            for(int i=0;i<a;i++)
  33.            {
  34.               System.out.println("enter the name of course "+(i+1));
  35.               name_course[i]=s.next();
  36.               System.out.println("enter the code of course "+(i+1));
  37.               code=s.next();
  38.               System.out.println("enter the hour of course "+(i+1));
  39.               hour[i]=s.nextInt();
  40.            }
  41.        for(int i=0;i<c;i++)
  42.        {
  43.            for(int j=0;j<a;j++)
  44.            {
  45.               System.out.println("enter the score of "+name[i]+" for course "+(j+1));
  46.               score=s.nextFloat();
  47.               if(score<45)
  48.                  points[i][j]=0f; 
  49.               else if(score>=45&&score<=49)
  50.                  points[i][j]=1.0f;
  51.               else if(score>=50&&score<=54)
  52.                  points[i][j]=1.3f;
  53.               else if(score>=55&&score<=59)
  54.                  points[i][j]=1.7f;
  55.               else if(score>=60&&score<=64)
  56.                  points[i][j]=2.0f;
  57.               else if(score>=65&&score<=69)
  58.                  points[i][j]=2.3f;
  59.               else if(score>=70&&score<=74)
  60.                  points[i][j]=2.7f;
  61.               else if(score>=75&&score<=79)
  62.                  points[i][j]=3.0f;
  63.               else if(score>=80&&score<=84)
  64.                  points[i][j]=3.3f;
  65.               else if(score>=85&&score<=89)
  66.                  points[i][j]=3.7f;
  67.               else if (score>=90&&score<=100)
  68.                   points[i][j]=4.0f;
  69.               else
  70.                   System.out.println("error");
  71.               sumhour=sumhour+hour[j];
  72.               sumpoints=sumpoints+(hour[j]*points[i][j]);
  73.            }
  74.            gpa[i]=sumpoints/sumhour;
  75.            sumhour=0;
  76.            sumpoints=0f;
  77.        }
  78.    }
  79.    public void gpa()
  80.    {
  81.        for(int i=0;i<c;i++)
  82.        {
  83.            System.out.println("The Name "+name[i]);
  84.           for(int j=0;j<a;j++)
  85.           {
  86.               System.out.println(name_course[j]+" "+points[i][j]);
  87.           }
  88.            System.out.println("the gpa of "+gpa[i]);
  89.        }
  90.  
  91.    }
  92. }
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
Main.java:3: error: class Project is public, should be declared in a file named Project.java
public class Project
       ^
1 error
stdout
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Standard output is empty
https://ideone.com/uw97Dw
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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