Unresolved Compilation Problems

[eck0]

Hello World!


I'm new to the Java programming language and I have never been the best when it comes to programming. Im preparing to study Java semester 2 this year, so I have managed to get my hands on an old assignment.


The program that I am trying to create is the program will record 12 temperatures which the user will input (using ConsoleReader).

The Program will record each input for each month, then print a line with all the numbers stored in the array. It will then work out, lowest, highest and average temperature. The last task that the program will run, is a count of number of months that fall between a certain temperature range.


So here's the program:

//Assignment 3
// Winston Ho
// S3274617

import java.io.*;

public class TempCalc {
	/**
	 * @param args
	 */
	ConsoleReader console = new ConsoleReader();
	public static void main(String[] args) 
	{

		// recording input from user into array, using while conditions to test if values are within -10 and 40 range
		
		System.out.println( "Welcome to TempCalc" );	
		
		System.out.println("Reading Temperature Values for 12 Months");
		int[] tempnum = new int[12];

		int index;
				for(index = 0 ; index < 12 ; index = index + 1)
			{
			System.out.println("Please enter the value For Month " + index  );
			tempnum[index] = console.readInt();
			boolean flag = false;
			while (flag == false) {
				if (tempnum[index] > 40 || tempnum[index] <= -10) 
				{
					System.out.println ("The value must be within -10 and 40. Try again:");
					tempnum[index] = console.readInt();
					index--;
				}
				else {
					tempnum[index] = tempnum[index];
					flag = true;
				}
			}
		}



		// working maximum temperature
		int highest;
	

		highest = tempnum[0];

		for (index = 0; index < 12; index = index + 1)
			{
				if (tempnum[1] > highest)
					{
						highest = tempnum[index];
					}
			}
		System.out.println ("The highest value was:" + highest);




		// working minimum temperature

		int lowest;
		
		
		lowest = tempnum[0];

		for (index = 0; index < 12; index = index + 1)
			{
				if (tempnum[1] < lowest )
					{
						lowest = tempnum[index];
					}
			}
		System.out.println ("The lowest value was:" + lowest);







		// average temperature
		
		int avgtemp;
		avgtemp = 0;

		for (index = 0; index < 12; index = index + 1)
			{ 
				avgtemp = avgtemp + tempnum[index];
			}
		System.out.println ("Average temp is:" + avgtemp );






		// printing number of values between -10 and -1
		int countone;
		for (index = 0; index <12 ; index = index + 1)
			{
				if (tempnum[index] >= -10 || tempnum[index]<= -1)
					{
						countone = countone + 1;
					}
			}
		System.out.println (" The number of months with values between -10 and -1 was:" + countone);







		// printing number of values between  0 and 9
		int counttwo = 0;
		for (index = 0; index <12 ; index = index + 1);
			{
				if (tempnum[index] >= 0 || tempnum[index]<= 9)
					{
						counttwo = counttwo + 1;
					}
			}
		System.out.println (" The number of months with values between 0 and 9 was:" + counttwo);






		// printing number of values between  10 and 19
		int countthree = 0;
		for (index = 0; index <12 ; index = index + 1)
			{
				if (tempnum[index] >= 10 || tempnum[index]<= 19)
					{
						countthree = countthree + 1;
					}
			}
		System.out.println (" The number of months with values between 10 and 19 was:" + countthree);





		// printing number of values between 20 and 29
		int countfour = 0;
		for (index = 0; index <12 ; index = index + 1)
			{
				if (tempnum[index] >= 20 || tempnum[index]<= 29)
					{
						countfour = countfour + 1;
					}
			}
		System.out.println (" The number of months with values between 20 and 29 was:" + countfour);



		// printing number of values between  and 0
		int countfive = 0;
		for (index = 0; index <12 ; index = index + 1)
			{
				if (tempnum[index] >= 30 || tempnum[index]<= 40)
					{
						countfive = countfive + 1;
					}
			}
					
		System.out.println ( "The number of months with values between 30 and 40 was:" + countfive);
		



		System.out.println ("Thank you for using TempCalc"); }
}

The ConsoleReader

import java.io.*;
public class ConsoleReader {
	public ConsoleReader()
	{
		reader = new BufferedReader(new InputStreamReader(System.in));
	}
	
	private BufferedReader reader;
	
	public int readInt()
	{
		String inputString = readLine();
      		int n = Integer.parseInt(inputString);
		return n;
	}
	
	public String readLine()
	{
		String inputLine = "";
		try
		{
			inputLine = reader.readLine();
		
		} catch (IOException e)
		{
			System.out.println(e);
			System.exit(1);
		}
		return inputLine;
	}
}

Now the issue I am having is that when I try and run the program, it throws an error stating:

Exception in thread "main" java.lang.Error: Unresolved compilation problems:
The local variable countone may not have been initialized
The local variable countone may not have been initialized

at TempCalc.main(TempCalc.java:102)



Im puzzled at what I have done wrong, can anyone point me in the right direction?

[Toll]

		int countone;
		for (index = 0; index <12 ; index = index + 1)
			{
				if (tempnum[index] >= -10 || tempnum[index]<= -1)
					{
						countone = countone + 1;
					}
			}

You don't set a start value for countone.