Java / Keyboard class, neophyte stumped

Java / Keyboard class, neophyte stumped

[Chuck]

I am tryin to use the Keyboard class included
in a book by John Lewis.  I get the following 
error messages:
C:\MyJava\EvenNumber.java:9: cannot resolve symbol
symbol  : class keyboard  
location: package cs1
import cs1.keyboard;
           ^
C:\MyJava\EvenNumber.java:26: cannot resolve symbol
symbol  : variable keyboard  
location: class EvenNumber
		num = keyboard.readInt();
                      ^
2 errors


Here is my code:

import cs1.keyboard;
import java.io.*;


public class EvenNumber
{

	public static void main (String[] args)

	{
		int num=0;
		int sum=0;
		int test=0;

						// keyboard input
		System.out.println ("Input any integer over the value of 2: ");
		System.out.println (" ");
		num = keyboard.readInt();

		while (test == 0)	//loop to repeat test for >2 condition
		{

			if (num < 2)	//Test to determine if the number is over 2
				{
					System.out.println ("The number you entered was less than 2");
					System.out.println ("Please enter another integer: ");
					//	num = Keyboard.readInt();
					test = 0;
			 	}
			else
					test = 1;

		}



				// loop to add all even integers
		for (int i=0; i<=num; i=i+2)
			{
				sum=sum+i;
			}
				// print out results
		System.out.println ("The sum of all even integers between");
		System.out.println ("2 and your integer, "+ num + ", is: " + sum);
		System.out.println (" ");


	}
}

Re: Java / Keyboard class, neophyte stumped

[me]

You do know about classpath in java, right?

and btw, Ada is not java, it is a different language. so this question
is send to the wrong group.



In article <7b4af09f.0110060529.368829c8@posting.google.com>,
the_edwards@ameritech.net says...
>
>I am tryin to use the Keyboard class included
>in a book by John Lewis.  I get the following 
>error messages:
>C:\MyJava\EvenNumber.java:9: cannot resolve symbol
>symbol  : class keyboard  
>location: package cs1
>import cs1.keyboard;
>           ^
>C:\MyJava\EvenNumber.java:26: cannot resolve symbol
>symbol  : variable keyboard  
>location: class EvenNumber
>		num = keyboard.readInt();
>                      ^
>2 errors
>
>
>Here is my code:
>
>import cs1.keyboard;
>import java.io.*;
>
>
>public class EvenNumber
>{
>
>	public static void main (String[] args)
>
>	{
>		int num=0;
>		int sum=0;
>		int test=0;
>
>						// keyboard input
>		System.out.println ("Input any integer over the value of 2: ");
>		System.out.println (" ");
>		num = keyboard.readInt();
>
>		while (test == 0)	//loop to repeat test for >2 condition
>		{
>
>			if (num < 2)	//Test to determine if the number is over 2
>				{
>					System.out.println ("The number you entered was less than 2");
>					System.out.println ("Please enter another integer: ");
>					//	num = Keyboard.readInt();
>					test = 0;
>			 	}
>			else
>					test = 1;
>
>		}
>
>
>
>				// loop to add all even integers
>		for (int i=0; i<=num; i=i+2)
>			{
>				sum=sum+i;
>			}
>				// print out results
>		System.out.println ("The sum of all even integers between");
>		System.out.println ("2 and your integer, "+ num + ", is: " + sum);
>		System.out.println (" ");
>
>
>	}
>}

Re: Java / Keyboard class, neophyte stumped

[Jeffrey Carter]

Using GNAT 3.13p/Win98 on your code, I get

C:\Code>gcc -c evennumber.adb
evennumber.adb:1:01: compilation unit expected
evennumber.adb:6:01: illegal character, replaced by "("
evennumber.adb:8:40: illegal character, replaced by "("
evennumber.adb:10:09: illegal character, replaced by "("
evennumber.adb:20:29: == should be =
evennumber.adb:21:17: illegal character, replaced by "("
evennumber.adb:24:33: illegal character, replaced by "("
evennumber.adb:25:88: missing string quote
evennumber.adb:26:13: missing string quote
evennumber.adb:27:82: missing string quote
evennumber.adb:28:11: missing string quote
evennumber.adb:31:33: illegal character, replaced by ")"
evennumber.adb:35:17: illegal character, replaced by ")"
evennumber.adb:41:25: illegal character, replaced by "("
evennumber.adb:43:25: illegal character, replaced by ")"
evennumber.adb:50:09: illegal character, replaced by ")"
evennumber.adb:51:01: illegal character, replaced by ")"

Perhaps you need to spend more time with your Ada
textbook/instructor/tutorial before trying something this ambitious? :)

-- 
Jeff Carter
"Nobody expects the Spanish Inquisition!"
Monty Python's Flying Circus