Thread: Program not printing anything

I will post my whole code again so we're all on the same page lol

import java.util.Scanner;
 
public class LetterDriver
{
  public static void main(String[] args){
 
    System.out.println("Enter lines of text, type two returns in a row to end.");
    Scanner scan = new Scanner(System.in);
    String tScan= " ";
    while(tScan.length() > 0) // while the length of the line is longer than 0
    {
      tScan = scan.nextLine(); // read the next line
    }
 
  LetterProfile k = new LetterProfile();
  k.printResults();
  }
}

public class LetterProfile
{
  int scoreboard[] = new int [26];
  private int index;
  private int next;
  private int largest =0;
  private int largestindex =0;
 
 public void countChars (String s)
  {
    // changes the input text to lower case letters
    s = s.toLowerCase();
    //
    char a = 'a';
    for (int i =0;i < s.length();i++)
    {
      int next = (int)s.charAt(i)-(int) a;
      if ( next<26 && next >= 0)
        scoreboard[next]++;
    }
 }
    public void scoreLine (String line)
    {
      int index = line.length();
      for (int j = 0; j<index; j++)
      {
        scoreboard[j]++;
        System.out.println(j + scoreboard[j]);
      }
    }
    public int largestLength()
    {
      int largest = 0;
      int largestindex = 0;
      for(int a = 0; a<26; a++)
      {
        if(scoreboard[a]>largest)
        largest = scoreboard[a];
        largestindex = a;
      }
      return (char)largestindex;
    }
    public int printResults()
    {
     largestLength();
     return largestLength();
    }
 }

--- Update ---

scoreLine is supposed to print out the letter and the number of times that letter appeared.

yes i just solved your all problem, you need to change scoreline to have it print out a table(right now it doesnt do anything), and you need to combine all the methods in LetterProfile into one new method
this is mine

public void runProg(){
countChars(query);
scoreBoard();

}
}
THis is my driver,
import java.util.Scanner;
public class LetterDriver{
public static void main(String[] args){
Scanner scan = new Scanner(System.in);
String tScan = scan.next();
LetterProfile a = new LetterProfile(tScan);
a.runProg();
}
}

How does scoreboard get filled?

Originally Posted by curmudgeon

How does scoreboard get filled?

through countChars

I used 26 of these for scoreline(mine is named scoreboard)

System.out.println("a = " + scoreboard[0]);

then I linked all the methods into a new method, runProg, and put in into the driver

Originally Posted by MikeIsNotHere

through countChars

And where does countChars get called with the String of interest? It is as if the original poster is thinking that the array will be filled mathemagically, and this won't happen unless he *codes* it to happen.

I tried to do what you suggested without seeing your LetterProfile class, but it isn't working for me.

--- Update ---

I don't expect the array to be filled magically. I am just very new to programming and half of what you guys are saying is greek to me.

What does the final output look like? I am still very new to java and confused on why its not printing anything. If anybody could show the final working code for the driver and class I'd very much appreciate it. Thanks!

Originally Posted by MikeIsNotHere

yes i just solved your all problem, you need to change scoreline to have it print out a table(right now it doesnt do anything), and you need to combine all the methods in LetterProfile into one new method
this is mine

public void runProg(){
countChars(query);
scoreBoard();

}
}
THis is my driver,
import java.util.Scanner;
public class LetterDriver{
public static void main(String[] args){
Scanner scan = new Scanner(System.in);
String tScan = scan.next();
LetterProfile a = new LetterProfile(tScan);
a.runProg();
}
}

scoreBoard() doesn't work since it's not defined in the driver

Originally Posted by jabdelgh

What does the final output look like? I am still very new to java and confused on why its not printing anything. If anybody could show the final working code for the driver and class I'd very much appreciate it. Thanks!

I am still very confused as well

The program is due tonight. That is why we are so persistent haha.. I really am trying in this class I've been going to tutoring and office hours. I guess programming is just not my thing...

I should have gotten help when I was in school now I'm on spring break :/ If you guys could debug the code then show me what was wrong I'd be forever grateful. Thanks.

Originally Posted by Obliter

scoreBoard() doesn't work since it's not defined in the driver

yeah I saw that, I made so many changes that I forgot to update other parts, lol