".class" error in Java

Question

I am trying to run this program but I cannot, the compiler is sending me a ".class" error. Can somebody help me with my problem and if it is possible a general tip about ".class" error? Here is the program:

    import java.io.*;
    class Bus
    {
        private int kostos;
        private int plithos;
        private int typepiv;
        Bus(int x,int y,int z)
        {
            kostos=x;
            plithos=y;
            typepiv=z;

        }
        public void KB(int[] x)
        {
        try{
           for(int i=1;i<5;i++)
             {

                 if(typepiv==2)
                 {
                     plithos=plithos+plithos/2;
                     kostos=kostos-kostos/2;
                 }
                 if(typepiv==3)
                 {
                     plithos=plithos-plithos/5;
                     kostos=kostos-kostos*25/100;
                 }
                 if(typepiv==1)
                 {
                     plithos=plithos;
                     kostos=kostos;
                 }
                     x[i]=plithos*kostos; 
             } 
         } catch(Exception ex){
              ex.printStackTrace();
         }
      }
   }

  class testBus
  {
     public static void main(String args[])
     {
          String leof[]=new String[4];
          int leof1[][]=new int[4][3];
          for(int i=1;i<5;i++)
             {
                 System.out.println("dwste onoma leoforiou");
                 leof[i]=UserInput.getString();
                 System.out.println("dwste kostos thesis enilika");
                 leof1[i][1]=UserInput.getInteger();
                 System.out.println("dwste plithos thesewn");
                 leof1[i][2]=UserInput.getInteger();
                 System.out.println("dwste tupos epibath gia enilikes=1,gia
                 paidia=2,gia    suntaksiouxous=3");
                 leof1[i][3]=UserInput.getInteger();
                 Bus leof2=new Bus(leof1[i][1],leof1[i][2],leof1[i][3]);
              }
           int KostEnoik[]=new int[4];
     ----->leof2.KB(KostEnoik);
           System.out.print("onoleo");
           System.out.print("  ");
           System.out.print("plithos");
           System.out.print("  ");
           System.out.print("kost(EURO)");
           System.out.print("typepiv");
           System.out.print("  ");
           System.out.print("apotelesma kostEnoik");
           for(int g=1;g<5;g++)
              {
                  System.out.print(leof[g]);
                  System.out.print(leof1[g][2]);
                  System.out.print(leof1[g][1]);
                  System.out.print(leof1[g][3]);
                  System.out.print(KostEnoik[g]);
              }
          }
      }

the compiler message says : testBus.java:56:error:cannot find symbol leof2.KB(KostEnoik); symbol:bariable leof2 location:class testBus 1 error

Even if the compiler error doesn't mean anything to you, it probably means something to other people here. Can you copy the exact text of the compiler error? — JVMATL
– JVMATL, Commented Jan 14, 2014 at 17:08
i put leof2.KB(KostEnoik); inside the loop and now the compiler complile the file thnxs very much everyone — Juliano Resuli
– Juliano Resuli, Commented Jan 14, 2014 at 17:44

Reimeus · Accepted Answer · 2014-01-14 17:44:18Z

1

Remove the array brackets [] when invoking KB

leof2.KB(KostEnoik);

and remove the preceding enclosing brace }.

Aside: Java naming conventions indicate that variables start with a lowercase letter e.g. kostEnoik. Also consider giving the method KB a meaningful name, e.g. calculateCost

Read Java naming conventions

edited Jan 14, 2014 at 17:44

answered Jan 14, 2014 at 17:10

Reimeus

160k16 gold badges225 silver badges282 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Juliano Resuli Over a year ago

i tried like this too but not it says that it cannot find symbol

Reimeus Over a year ago

Did you import UserInput?

Girish · Accepted Answer · 2014-01-14 17:24:03Z

1

concern is with your access

leof2.KB(KostEnoik[]);

You are trying to access the "leof2" variable outside of the scope in which it is defined i.e. outside for loop and scope is upto for loop and that's why the compiler will not be able to find that varialble .

answered Jan 14, 2014 at 17:24

Girish

1,7171 gold badge19 silver badges34 bronze badges

1 Comment

Girish Over a year ago

@user3194888 have u get my friend

fvu · Accepted Answer · 2014-01-14 17:12:35Z

0

    leof1[i][3]=UserInput.getInteger();
    Bus leof2=new Bus(leof1[i][1],leof1[i][2],leof1[i][3]);
}
int KostEnoik[]=new int[4];
leof2.KB(KostEnoik[]);

You are trying to access the "leof2" variable outside of the scope in which it's defined (in this particular case, the for loop) and that's not allowed.
method KB takes an int array as argument, but you don't have to add the [] when passing the argument. The correct line is

leof2.KB(KostEnoik);

However, there's something pretty odd with you logic: you're repeatedly (for loop) setting leof2, but only the last iteration of the loop will have any effect. I'm almost certain that that's not what you actually want, but the correct answer to where Bus leof2 should actually be defined depends on the correction of that issue.

answered Jan 14, 2014 at 17:12

fvu

33.1k6 gold badges64 silver badges84 bronze badges

2 Comments

Juliano Resuli Over a year ago

hwat i want is that the array leof[1][1] and leof1[2][1] to go to the method i really dont know how to do this keep in mind that i am first year student so i dont know very much

fvu Over a year ago

ok I see. I think you're better off starting over, because the logic of your program is quite twisted due to all the different arrays you're using, and once you solve the issues mentioned in this question you'll be facing a number of array index of of bounds conditions (hint: the last element of int a[4] is a[3]). Ideally try to group all data that describe 1 line in a separate class and move the KB method to that class. That will be a lot clearer, and a lot more object oriented.

Qadir Hussain · Accepted Answer · 2014-01-14 17:32:31Z

0

leof2.KB(KostEnoik); this is the main culprit. whether you have imported UserInput. Also try to go through the Java Basics

any method can be invoked using object when it is non static or class name when it is static. Please consider this link

answered Jan 14, 2014 at 17:32

Qadir Hussain

1,2611 gold badge10 silver badges26 bronze badges

Comments

Scorpion · Accepted Answer · 2014-01-14 17:39:29Z

0

Get leof2 object out side the For Loop.
Don't type [] when you pass the array as argument "leof2.KB(KostEnoik[]);".

answered Jan 14, 2014 at 17:39

Scorpion

5874 silver badges22 bronze badges

Collectives™ on Stack Overflow

".class" error in Java

5 Answers 5

2 Comments

1 Comment

2 Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

5 Answers 5

2 Comments

1 Comment

2 Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related