lol help

Noob programmer here, I can't figure out why I keep getting the error "Cannot find symbol class ArrayList".


import java.awt.*;
import javax.swing.*;
import java.util.Scanner;

public class MyArray{  
  


     public static void main()     {
        int i=0, thesame, size;         
      
        ArrayList<String> list = new ArrayList<String>();
         Scanner input = new Scanner(System.in);
         bString = "done";
         for(i=0;i!=2.5;i++){
              System.out.print("Enter a name");
              nextWord = input.nextString;
              list.add(i, nextWord);
              boolean theSame = bString.equals("Done");
              if(theSame = 0)
                  i = 1.5;
         }   
          int size = list.size();
          for(i=0;i<=0;i++){
              String temp = copy.get(i);
              System.out.print(temp);
            }  
               
               
    }
    public ArrayList sort(ArrayList list){
      
        int top, i, maxIdx, copy1;
       
       
        ArrayList<Sring> copy = new ArrayList<String>(list.size());
       
    for (int i = 0;i < list.size;i++)
        copy.add((string)list.get(i));
    for (int top=copy.size-1;top > 0;top--) {
        ArrayList maximum = ((string)copy.get(0));
        int maxIdx = 0;

        for (int search=1;search <= top;search++){
            String name = ((string)copy.get(search)) ;
            String topName = ((string)copy.get(top)) ;
          
            if (name.compareTo(top) = 1) {
                 Sting maximum = ((string)copy.get(search));
                 maxIdx = search;
            }
        }
        if (maxIdx != top) {
        ArrayList swap = ((string)copy.get(top));
        copy1= ((string)copy.get(maxIdx));
        copy.set(top,copy1);
        copy.set(maxIdx,swap);
       }
     }
    return copy;


}
}

btw, its a program for sorting names alphabettically(selecion sort)

import java.util.ArrayList;

>>3
wtf really? god damn i cant believe i forgot about that, thanks

for(i=0;i!=2.5;i++)
for(i=0;i<=0;i++)

wat

int i=0, thesame, size;
Java standard: One declaration per line

Also, declare variables in the lowest possible scope, since you're only using i in for loops just use:
for (int i = 0; i < 3; i++) {

if (theSame = 0) could be if (!theSame)

i = 1.5; 1.5 isn't an int, what were you trying to do here?

IHBT

>>6
if (theSame = 0)
=

Ok so now im getting an error Ive never got before. "size has private access in java.util.ArrayList" In the line "tempSize = list.size;"

import java.util.ArrayList;
import java.awt.*;
import javax.swing.*;
import java.util.Scanner;

public class MyArray{  
static ArrayList copy;  


     public static void main()     {
        int i=0, thesame, size;         
       
        ArrayList<String> list = new ArrayList<String>();
        
         String bString = "done";
         for(i=0;i<0;i++){
             System.out.println("Enter a name");
             Scanner input = new Scanner(System.in);
              String nextWord = input.next();
              list.add(i,nextWord);
              boolean theSame = bString.equals("Done");
              if(theSame = true)
                  i = -1;
         }   
          size = list.size();
          for(i=0;i<=0;i++){
              String temp = ((String)copy.get(i));
              System.out.print(temp);
            }  
               
               
    }
    public ArrayList sort(ArrayList list){
      
        int top, i, maxIdx, copy1, tempSize;
       
       
        ArrayList<String> copy = new ArrayList<String>(list.size());
        tempSize = list.size;
    for (i = 0;i < tempSize;i++)
        copy.add((String)list.get(i));
    for (int top=copy.size-1;top > 0;top--) {
        ArrayList maximum = ((String)copy.get(0));
        int maxIdx = 0;

        for (int search=1;search <= top;search++){
            String name = ((String)copy.get(search)) ;
            String topName = ((String)copy.get(top)) ;
          
            if (name.compareTo(top) = 1) {
                 Sting maximum = ((String)copy.get(search));
                 maxIdx = search;
            }
        }
        if (maxIdx != top) {
        ArrayList swap = ((String)copy.get(top));
        copy1= ((String)copy.get(maxIdx));
        copy.set(top,copy1);
        copy.set(maxIdx,swap);
       }
     }
    return copy;


}
}

tempSize = list.size();

god damnit, im retarded, thanks

>>10
That'll be the new /prog/ slogan.

ok so thanks for the help guys, but i have one final predicament, so i finally got it all debugged with no syntax errors, but now when i run it, it immediately closes and says null pointer exception and the line "String temp = ((String)copy.get(i));" is highlighted, never had this happen before either

>>11
'-._                  ___.....___
    `.__           ,-'        ,-.`-,
        `''-------'          ( X )  `._     god damnit,
                              `-'      (    i'm retarded,
                                        \   thanks
                                        \
                               ,...''-..'
   ................._         /,..-''..,
                     `-.._         _.-'
                          `'-----''

>>12
null pointer exception
Learn to troll.

>>14
?

>>12
because copy hasn't been initialized at that point, it's null

>>16
but since i returned it in the sort method shouldnt it be good to go?

you never called the sort method, add sort(list); after size = list.size(); and before the for loop

i meant copy = sort(list);

[i]ENTERPRISE[/o]

ok well now i think im understanding this better, but now im getting an illegal start of expression for the beginning line of my sort method, why is this happening after adding the new line?

your brackets might be messed up

Go to http://www.meatspin.com/

There, you will find the answer.

>>23
back to /b/, please

ok expert programmers, after a couple more hours of debugging it seems ive hit another wall, now again I have no more syntax errors but when trying to run it it comes back and says out of bounds error on the line "String temp = ((String)copy.get(i));" which i think it probably means is trying to access the first slot of the array list but there is nothing there which i dont get because ive created the sort method and then called it. But it wont even let me input anything before it closes which is probably why there isnt anything there, here is the new code


import java.util.ArrayList;
import java.awt.*;
import javax.swing.*;
import java.util.Scanner;

public class MyArray{  
  


     public static void main()     {
        int i=0, thesame ,size;         
       
        ArrayList<String> list = new ArrayList<String>();
        Scanner input = new Scanner(System.in);
         String bString = "done";
         for(i=0;i<0;i++){
             System.out.println("Enter a name");
            
              String nextWord = input.next();
              list.add(i,nextWord);
              boolean theSame = bString.equals("Done");
              if(theSame = true)
                  i = -1;
                }
                  size = list.size();
                ArrayList copy = sort(list);
          for(i=0;i<=copy.size();i++){
              String temp = ((String)copy.get(i));
              System.out.print(temp);
         }   
               
   
}
    public  static ArrayList sort(ArrayList list){
      
        int top, v, maxIdx,  tempSize,size;
       
       
        ArrayList<String> copy = new ArrayList<String>(list.size());
        tempSize = list.size();
    for (v = 0;v < tempSize;v++)
        copy.add((String)list.get(v));
    for ( top=copy.size()-1;top > 0;top--) {
        String maximum = ((String)copy.get(0));
        maxIdx = 0;

        for (int search=1;search <= top;search++){
            String name = ((String)copy.get(search)) ;
            String topName = ((String)copy.get(top)) ;
          
            if (name.compareTo(topName) == 1) {
                  maximum = ((String)copy.get(search));
                 maxIdx = search;
            }
        }
        if (maxIdx != top) {
        String swap = ((String)copy.get(top));
        String copy1= ((String)copy.get(maxIdx));
        copy.set(top,copy1);
        copy.set(maxIdx,swap);
       }
 
       }  
   
    return copy;
}

}

also sorry for the bad indentation

This is such an obvious troll.

I hereby declare this thread over. Thank you for your cooperation.

>>27
Only FIOC can declare a thread over.

>>27
jesus, as i said im really crappy at this, im trying not to sound so stupid, I have been doing this program forever but i dont understand why im getting an out of bounds exception now, jesus im sorry im not a professional quality programmer, im not saying you have to help me but im not a troll, just retarded when it comes to comp sci i guess

op here again, there is probably just one simple concept or something I am missing, correct? I'm sure once i figure this out I will understand much better.

>>29
Why should I believe a troll? gb2trollland, troll.

>>29
professional quality programmer
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Well thanks for the help anyways guys, ill just keep fiddling with it i guess

Try stabbing yourself in the chest. I've heard that works.

>>29
You declare thesame as an int, but never use it. Remove it. It's only there to confuse it with the boolean theSame.
You declare int size, assign the size of the array to it, and then never use it, instead using copy.size().

In if (theSame = true), you're using an assignment instead of a comparison. Assignment returns the value being assigned, so the net result is that -1 is always assigned to i.
Not that it matters, since the for loop it's in will never execute, since i starts out as 0, which is not less than 0.

But seriously, don't add to ArrayLists using indices directly unless you have to. The entire point of ArrayList is that it deals with that stuff itself.
And when retrieving yours Strings from it, you don't have to cast to String, since you're already using generics. You don't even need that temp variable. Just pass it directly to System.out.print().

And that's just some of what's wrong with your main method. I'm not even going to look at the other one.

If you aren't a troll, get the fuck away from computers right now. You're never going to be an even halfway competent code monkey, let alone a real programmer.
If you do intend to stay in this field, at the very least learn to format your fucking code, so other people can clean up after you.

>>37
oh wow, some of those mistakes are just retarded on my part, i was writing this at like 3 in the morning yesterday, thanks though ill keep working from there

Jeez, you can't even write English properly.

>>39
cry some more