Programming Forums > Application Development > Java

shangnyun · Jun 9th, 2005, 10:21 AM

Ok guys. I'm getting somewhere. This is still incomplete, but check it out and give me pointers.

import java.util.*;

public class TempConversion
{
    public static void main(String[] args)
    {
    	int degreeValue;
    	String typeOfConversion
    	double result;
    	
    	System.out.println("=====TEMPERATURE CONVERSION=====");
    	System.out.println();
    	System.out.println("Please enter a whole number for");
    	System.out.println("conversion:");
    	
    	Scanner keyboard = new Scanner(System.in);
    	degreeValue = new keyboard.nextInt(System.in)
    	
    	System.out.println("Now, please enter either "/C"/ or "/c"/ for a");
    	System.out.println("Celsius-Fahrenheit conversion, or "/F"/ or "/f"/");
    	System.out.println("for a Fahrenheit-Celsius conversion:");
    	
    	boolean = restartConversion;
    	while (restartConversion = true)
    	{
			if((typeOfConversion == "C") || (typeOfConversion == "c"))
			{
				result = 5.0((double)degreeValue - 32.0)/9.0;
				System.out.println(degreeValue + " Fahrenheit is " + result + " Celsius");
			}
			else if((typeOfConversion == "F") || (typeOfConversion == "f"))
			{
				result = (9.0(degreeValue)/5.0) + 32.0;
				System.out.println(degreeValue + " Celsius is " + result + " Fahrenheit);
			}
		}
	}
}

Knight · Jun 9th, 2005, 10:48 AM

(Toggle Plain Text)

boolean = restartConversion;

Should be:

(Toggle Plain Text)

boolean restartConversion = true;

Your while loop is an infinite loop. You never change the value for the variable restartConversion. So, try the following:

(Toggle Plain Text)

while (restartConversion = true)
    	{
		if((typeOfConversion == "C") || (typeOfConversion == "c"))
		{
			result = 5.0((double)degreeValue - 32.0)/9.0;
			System.out.println(degreeValue + " Fahrenheit is " + result + " Celsius");
                        restartConversion = false;
		}
		else if((typeOfConversion == "F") || (typeOfConversion == "f"))
		{
			result = (9.0(degreeValue)/5.0) + 32.0;
			System.out.println(degreeValue + " Celsius is " + result + " Fahrenheit);
                        restartConversion = false;
		}
                else
                {
                        System.out.println("Oops! Something went wrong!");
                        restartConversion = false;
                }
	}

Hope this helps

Ooble · Jun 9th, 2005, 11:02 AM

It's clear you need to read the input in as a string (which you should always do, no matter what - it prevents program breaking). Remember, pseudocode is one of the most useful tools you have when programming. For example:

(Toggle Plain Text)

variables:
	string: input
	double: degreesC
	double: degreesF

start loop
	ask for input
	if input is 'Q' or 'q' then break out of loop
	
	(verify input)
	loop through the input string, making sure every character is a number or a dot, and the last character is either a 'C' or an 'F'.
	
	if input ends in 'C':
		copy number portion of input into degreesC
		calculate and print degreesF
	
	else if input ends in 'F':
		copy number portion of input into degreesF
		calculate and print degreesC
end loop

With something like that, you can easily see what you need to do.

shangnyun · Jun 9th, 2005, 11:13 AM

OMFG I think I'm done!!!!

Remember, the assignment asks for a switch statement!

(Toggle Plain Text)

import java.util.*;

public class TempConversion
{
    public static void main(String[] args)
    {
    	int degreeValue;
    	String typeOfConversion;
    	double result;
    	String answer;

    	Scanner keyboard = new Scanner(System.in);

    	do
    	{
    		System.out.println("=====TEMPERATURE CONVERSION=====");
    		System.out.println();
    		System.out.println("Please enter a whole number for");
    		System.out.println("conversion:");
     		System.out.println();
    		System.out.println();

			degreeValue = new keyboard.nextInt(System.in);

    		System.out.println("Now, please enter either "/C"/ or "/c"/ for a");
    		System.out.println("Celsius-Fahrenheit conversion, or "/F"/ or "/f"/");
    		System.out.println("for a Fahrenheit-Celsius conversion:");
			System.out.println();

			typeOfConversion = new keyboard.next(System.in);

			switch (typeOfConversion)
			{
				case "C":
				case "c":
					result = 5.0((double)degreeValue - 32.0)/9.0;
					System.out.println();
					System.out.println(degreeValue + " Fahrenheit is " + result + " Celsius");
					break;
				case "F":
				case "f":
					result = (9.0(degreeValue)/5.0) + 32.0;
					System.out.println();
					System.out.println(degreeValue + " Celsius is " + result + " Fahrenheit");
					break;
				default:
					System.out.println("Oops! Your entry is invalid. Please enter either");
					System.out.println(""/F"/ or "/C"/. The letter case does not matter.");
					break;
			}

			System.out.println();
			System.out.println();
			System.out.println("Would you like to perform another conversion?");
			System.out.println("Please enter "/yes"/ or "/no"/:");
			System.out.println();

			answer = keyboard.next(System.in);

//			if((typeOfConversion == "C") || (typeOfConversion == "c"))
//			{
//				result = 5.0((double)degreeValue - 32.0)/9.0;
//				System.out.println(degreeValue + " Fahrenheit is " + result + " Celsius");
//			}
//			else if((typeOfConversion == "F") || (typeOfConversion == "f"))
//			{
//				result = (9.0(degreeValue)/5.0) + 32.0;
//				System.out.println(degreeValue + " Celsius is " + result + " Fahrenheit);
//			}

		}while (answer.equalsIgnoreCase("yes"));
	}
}

import java.util.*;

public class TempConversion
{
    public static void main(String[] args)
    {
    	int degreeValue;
    	String typeOfConversion;
    	double result;
    	String answer;

    	Scanner keyboard = new Scanner(System.in);

    	do
    	{
    		System.out.println("=====TEMPERATURE CONVERSION=====");
    		System.out.println();
    		System.out.println("Please enter a whole number for");
    		System.out.println("conversion:");
     		System.out.println();
    		System.out.println();

			degreeValue = new keyboard.nextInt(System.in);

    		System.out.println("Now, please enter either "/C"/ or "/c"/ for a");
    		System.out.println("Celsius-Fahrenheit conversion, or "/F"/ or "/f"/");
    		System.out.println("for a Fahrenheit-Celsius conversion:");
			System.out.println();

			typeOfConversion = new keyboard.next(System.in);

			switch (typeOfConversion)
			{
				case "C":
				case "c":
					result = 5.0((double)degreeValue - 32.0)/9.0;
					System.out.println();
					System.out.println(degreeValue + " Fahrenheit is " + result + " Celsius");
					break;
				case "F":
				case "f":
					result = (9.0(degreeValue)/5.0) + 32.0;
					System.out.println();
					System.out.println(degreeValue + " Celsius is " + result + " Fahrenheit");
					break;
				default:
					System.out.println("Oops! Your entry is invalid. Please enter either");
					System.out.println(""/F"/ or "/C"/. The letter case does not matter.");
					break;
			}

			System.out.println();
			System.out.println();
			System.out.println("Would you like to perform another conversion?");
			System.out.println("Please enter "/yes"/ or "/no"/:");
			System.out.println();

			answer = keyboard.next(System.in);

//			if((typeOfConversion == "C") || (typeOfConversion == "c"))
//			{
//				result = 5.0((double)degreeValue - 32.0)/9.0;
//				System.out.println(degreeValue + " Fahrenheit is " + result + " Celsius");
//			}
//			else if((typeOfConversion == "F") || (typeOfConversion == "f"))
//			{
//				result = (9.0(degreeValue)/5.0) + 32.0;
//				System.out.println(degreeValue + " Celsius is " + result + " Fahrenheit);
//			}

		}while (answer.equalsIgnoreCase("yes"));
	}
}

This is beautiful. It all makes PERFECT sense to me

. I think this is the whole deal! I haven't compiled/tested yet, I'm sure I need to modify some stuff/possibly iron out syntax errors and whatnot... but this is it!

Ooble.. great point. Pseudo-code is great... I simply have never used it before. I really need to start using it

. It would have helped here, tremendously. I did this all with straight-out coding, no pseudo-code. But check it out!

shangnyun · Jun 9th, 2005, 11:30 AM

OK I got the escape characters all wrong at first. I was using "/ instead of \".. that's all fixed. I'm down to two errors now, and I have no idea what's going on. What does this mean?? What does the "^" stand for anyway?

(Toggle Plain Text)

C:\JAVA\MyJava\HOMEWORK\HW Assignment 1\4th Edition\Chapter 03\TempConversion.java:37: ';' expected
					result = 5.0((double)degreeValue - 32.0)/9.0;
                                                    ^
C:\JAVA\MyJava\HOMEWORK\HW Assignment 1\4th Edition\Chapter 03\TempConversion.java:43: ')' expected
					result = (9.0(degreeValue)/5.0) + 32.0;
                                                     ^
2 errors

Ooble · Jun 9th, 2005, 11:57 AM

You need a multiplication sign: 5.0 * ((double)...

shangnyun · Jun 9th, 2005, 12:02 PM

YEP!! Just figured that out... missing operators. Thanks a lot

. Now I have a whole new batch of errors... I fixed those two and got 4 new ones. Fixing those..

(Toggle Plain Text)

C:\JAVA\MyJava\HOMEWORK\HW Assignment 1\4th Edition\Chapter 03\TempConversion.java:24: package keyboard does not exist
			degreeValue = new keyboard.nextInt(System.in);
                                                  ^
C:\JAVA\MyJava\HOMEWORK\HW Assignment 1\4th Edition\Chapter 03\TempConversion.java:31: package keyboard does not exist
			typeOfConversion = new keyboard.next(System.in);
                                                       ^
C:\JAVA\MyJava\HOMEWORK\HW Assignment 1\4th Edition\Chapter 03\TempConversion.java:33: incompatible types
found   : java.lang.String
required: int
			switch (typeOfConversion)
                                ^
C:\JAVA\MyJava\HOMEWORK\HW Assignment 1\4th Edition\Chapter 03\TempConversion.java:59: cannot find symbol
symbol  : method next(java.io.InputStream)
location: class java.util.Scanner
			answer = keyboard.next(System.in);
                                         ^
4 errors

Any help is highly appreciated with fixing these. I have no freakin clue what I'm doing. Well, I have somewhat of a clue.. but I'm guessing

shangnyun · Jun 9th, 2005, 12:12 PM

OK.. I realized now that the switch statement can only take char and int values. I need the switch statement to understand my F/f and C/f though.. and those are entered by the user using

Scanner keyboard = new Scanner(System.in);
typeOfConversion = keyboard.next();

I've declared typeOfConversion as a string at the beginning... so what now? How do I make my switch statement take the string value? Only thing I can think of is by type-casting the string value to a CHAR value, but that's not possible, right?

Damn!

Why is there no

typeOfConversion = keyboard.nextChar();

!!?

Gilward Kukel · Jun 9th, 2005, 12:29 PM

(Toggle Plain Text)

switch(typeOfConversion.charAt(0)){
case 'c':
...
}

shangnyun · Jun 9th, 2005, 12:35 PM

Quote:

Originally Posted by Gilward Kukel

(Toggle Plain Text)

switch(typeOfConversion.charAt(0)){
case 'c':
...
}

Genius... wow. Thank you! It worked... it just compiled without ANY errors

. Oh dayum... now let me see those infinte loops I've probably created...

/me gets ready to hit CTRL + C

Do you guys hang out in any IRC channels? I could really need a Java programming IRC channel to hang out in.. with helpful people who don't get pissed at noobs

Thanks!

Jun 9th, 2005, 10:21 AM	#11
shangnyun Programmer Join Date: Jun 2005 Posts: 34 Rep Power: 0	Ok guys. I'm getting somewhere. This is still incomplete, but check it out and give me pointers. (Toggle Plain Text) import java.util.; public class TempConversion { public static void main(String[] args) { int degreeValue; String typeOfConversion double result; System.out.println("=====TEMPERATURE CONVERSION====="); System.out.println(); System.out.println("Please enter a whole number for"); System.out.println("conversion:"); Scanner keyboard = new Scanner(System.in); degreeValue = new keyboard.nextInt(System.in) System.out.println("Now, please enter either "/C"/ or "/c"/ for a"); System.out.println("Celsius-Fahrenheit conversion, or "/F"/ or "/f"/"); System.out.println("for a Fahrenheit-Celsius conversion:"); boolean = restartConversion; while (restartConversion = true) { if((typeOfConversion == "C") \|\| (typeOfConversion == "c")) { result = 5.0((double)degreeValue - 32.0)/9.0; System.out.println(degreeValue + " Fahrenheit is " + result + " Celsius"); } else if((typeOfConversion == "F") \|\| (typeOfConversion == "f")) { result = (9.0(degreeValue)/5.0) + 32.0; System.out.println(degreeValue + " Celsius is " + result + " Fahrenheit); } } } } import java.util.; public class TempConversion { public static void main(String[] args) { int degreeValue; String typeOfConversion double result; System.out.println("=====TEMPERATURE CONVERSION====="); System.out.println(); System.out.println("Please enter a whole number for"); System.out.println("conversion:"); Scanner keyboard = new Scanner(System.in); degreeValue = new keyboard.nextInt(System.in) System.out.println("Now, please enter either "/C"/ or "/c"/ for a"); System.out.println("Celsius-Fahrenheit conversion, or "/F"/ or "/f"/"); System.out.println("for a Fahrenheit-Celsius conversion:"); boolean = restartConversion; while (restartConversion = true) { if((typeOfConversion == "C") \|\| (typeOfConversion == "c")) { result = 5.0((double)degreeValue - 32.0)/9.0; System.out.println(degreeValue + " Fahrenheit is " + result + " Celsius"); } else if((typeOfConversion == "F") \|\| (typeOfConversion == "f")) { result = (9.0(degreeValue)/5.0) + 32.0; System.out.println(degreeValue + " Celsius is " + result + " Fahrenheit); } } } }

Jun 9th, 2005, 10:48 AM	#12
Knight Newbie Join Date: Jun 2005 Posts: 28 Rep Power: 0	(Toggle Plain Text) boolean = restartConversion; boolean = restartConversion; Should be: (Toggle Plain Text) boolean restartConversion = true; boolean restartConversion = true; Your while loop is an infinite loop. You never change the value for the variable restartConversion. So, try the following: (Toggle Plain Text) while (restartConversion = true) { if((typeOfConversion == "C") \|\| (typeOfConversion == "c")) { result = 5.0((double)degreeValue - 32.0)/9.0; System.out.println(degreeValue + " Fahrenheit is " + result + " Celsius"); restartConversion = false; } else if((typeOfConversion == "F") \|\| (typeOfConversion == "f")) { result = (9.0(degreeValue)/5.0) + 32.0; System.out.println(degreeValue + " Celsius is " + result + " Fahrenheit); restartConversion = false; } else { System.out.println("Oops! Something went wrong!"); restartConversion = false; } } while (restartConversion = true) { if((typeOfConversion == "C") \|\| (typeOfConversion == "c")) { result = 5.0((double)degreeValue - 32.0)/9.0; System.out.println(degreeValue + " Fahrenheit is " + result + " Celsius"); restartConversion = false; } else if((typeOfConversion == "F") \|\| (typeOfConversion == "f")) { result = (9.0(degreeValue)/5.0) + 32.0; System.out.println(degreeValue + " Celsius is " + result + " Fahrenheit); restartConversion = false; } else { System.out.println("Oops! Something went wrong!"); restartConversion = false; } } Hope this helps Last edited by Knight; Jun 9th, 2005 at 10:51 AM.

Jun 9th, 2005, 11:02 AM	#13
Ooble I eat cake for breakfast. Join Date: Jul 2004 Location: In my box. Posts: 4,434 Rep Power: 9	It's clear you need to read the input in as a string (which you should always do, no matter what - it prevents program breaking). Remember, pseudocode is one of the most useful tools you have when programming. For example: (Toggle Plain Text) variables: string: input double: degreesC double: degreesF start loop ask for input if input is 'Q' or 'q' then break out of loop (verify input) loop through the input string, making sure every character is a number or a dot, and the last character is either a 'C' or an 'F'. if input ends in 'C': copy number portion of input into degreesC calculate and print degreesF else if input ends in 'F': copy number portion of input into degreesF calculate and print degreesC end loop variables: string: input double: degreesC double: degreesF start loop ask for input if input is 'Q' or 'q' then break out of loop (verify input) loop through the input string, making sure every character is a number or a dot, and the last character is either a 'C' or an 'F'. if input ends in 'C': copy number portion of input into degreesC calculate and print degreesF else if input ends in 'F': copy number portion of input into degreesF calculate and print degreesC end loop With something like that, you can easily see what you need to do. __________________ Me :: You :: Them

Jun 9th, 2005, 11:30 AM	#15
shangnyun Programmer Join Date: Jun 2005 Posts: 34 Rep Power: 0	OK I got the escape characters all wrong at first. I was using "/ instead of \".. that's all fixed. I'm down to two errors now, and I have no idea what's going on. What does this mean?? What does the "^" stand for anyway? (Toggle Plain Text) C:\JAVA\MyJava\HOMEWORK\HW Assignment 1\4th Edition\Chapter 03\TempConversion.java:37: ';' expected result = 5.0((double)degreeValue - 32.0)/9.0; ^ C:\JAVA\MyJava\HOMEWORK\HW Assignment 1\4th Edition\Chapter 03\TempConversion.java:43: ')' expected result = (9.0(degreeValue)/5.0) + 32.0; ^ 2 errors C:\JAVA\MyJava\HOMEWORK\HW Assignment 1\4th Edition\Chapter 03\TempConversion.java:37: ';' expected result = 5.0((double)degreeValue - 32.0)/9.0; ^ C:\JAVA\MyJava\HOMEWORK\HW Assignment 1\4th Edition\Chapter 03\TempConversion.java:43: ')' expected result = (9.0(degreeValue)/5.0) + 32.0; ^ 2 errors

Jun 9th, 2005, 11:57 AM	#16
Ooble I eat cake for breakfast. Join Date: Jul 2004 Location: In my box. Posts: 4,434 Rep Power: 9	You need a multiplication sign: 5.0 * ((double)... __________________ Me :: You :: Them

Jun 9th, 2005, 11:13 AM	#14
shangnyun Programmer Join Date: Jun 2005 Posts: 34 Rep Power: 0	OMFG I think I'm done!!!! Remember, the assignment asks for a switch statement! (Toggle Plain Text) import java.util.; public class TempConversion { public static void main(String[] args) { int degreeValue; String typeOfConversion; double result; String answer; Scanner keyboard = new Scanner(System.in); do { System.out.println("=====TEMPERATURE CONVERSION====="); System.out.println(); System.out.println("Please enter a whole number for"); System.out.println("conversion:"); System.out.println(); System.out.println(); degreeValue = new keyboard.nextInt(System.in); System.out.println("Now, please enter either "/C"/ or "/c"/ for a"); System.out.println("Celsius-Fahrenheit conversion, or "/F"/ or "/f"/"); System.out.println("for a Fahrenheit-Celsius conversion:"); System.out.println(); typeOfConversion = new keyboard.next(System.in); switch (typeOfConversion) { case "C": case "c": result = 5.0((double)degreeValue - 32.0)/9.0; System.out.println(); System.out.println(degreeValue + " Fahrenheit is " + result + " Celsius"); break; case "F": case "f": result = (9.0(degreeValue)/5.0) + 32.0; System.out.println(); System.out.println(degreeValue + " Celsius is " + result + " Fahrenheit"); break; default: System.out.println("Oops! Your entry is invalid. Please enter either"); System.out.println(""/F"/ or "/C"/. The letter case does not matter."); break; } System.out.println(); System.out.println(); System.out.println("Would you like to perform another conversion?"); System.out.println("Please enter "/yes"/ or "/no"/:"); System.out.println(); answer = keyboard.next(System.in); // if((typeOfConversion == "C") \|\| (typeOfConversion == "c")) // { // result = 5.0((double)degreeValue - 32.0)/9.0; // System.out.println(degreeValue + " Fahrenheit is " + result + " Celsius"); // } // else if((typeOfConversion == "F") \|\| (typeOfConversion == "f")) // { // result = (9.0(degreeValue)/5.0) + 32.0; // System.out.println(degreeValue + " Celsius is " + result + " Fahrenheit); // } }while (answer.equalsIgnoreCase("yes")); } } import java.util.; public class TempConversion { public static void main(String[] args) { int degreeValue; String typeOfConversion; double result; String answer; Scanner keyboard = new Scanner(System.in); do { System.out.println("=====TEMPERATURE CONVERSION====="); System.out.println(); System.out.println("Please enter a whole number for"); System.out.println("conversion:"); System.out.println(); System.out.println(); degreeValue = new keyboard.nextInt(System.in); System.out.println("Now, please enter either "/C"/ or "/c"/ for a"); System.out.println("Celsius-Fahrenheit conversion, or "/F"/ or "/f"/"); System.out.println("for a Fahrenheit-Celsius conversion:"); System.out.println(); typeOfConversion = new keyboard.next(System.in); switch (typeOfConversion) { case "C": case "c": result = 5.0((double)degreeValue - 32.0)/9.0; System.out.println(); System.out.println(degreeValue + " Fahrenheit is " + result + " Celsius"); break; case "F": case "f": result = (9.0(degreeValue)/5.0) + 32.0; System.out.println(); System.out.println(degreeValue + " Celsius is " + result + " Fahrenheit"); break; default: System.out.println("Oops! Your entry is invalid. Please enter either"); System.out.println(""/F"/ or "/C"/. The letter case does not matter."); break; } System.out.println(); System.out.println(); System.out.println("Would you like to perform another conversion?"); System.out.println("Please enter "/yes"/ or "/no"/:"); System.out.println(); answer = keyboard.next(System.in); // if((typeOfConversion == "C") \|\| (typeOfConversion == "c")) // { // result = 5.0((double)degreeValue - 32.0)/9.0; // System.out.println(degreeValue + " Fahrenheit is " + result + " Celsius"); // } // else if((typeOfConversion == "F") \|\| (typeOfConversion == "f")) // { // result = (9.0(degreeValue)/5.0) + 32.0; // System.out.println(degreeValue + " Celsius is " + result + " Fahrenheit); // } }while (answer.equalsIgnoreCase("yes")); } } This is beautiful. It all makes PERFECT sense to me . I think this is the whole deal! I haven't compiled/tested yet, I'm sure I need to modify some stuff/possibly iron out syntax errors and whatnot... but this is it! Ooble.. great point. Pseudo-code is great... I simply have never used it before. I really need to start using it . It would have helped here, tremendously. I did this all with straight-out coding, no pseudo-code. But check it out!

Jun 9th, 2005, 12:02 PM	#17
shangnyun Programmer Join Date: Jun 2005 Posts: 34 Rep Power: 0	YEP!! Just figured that out... missing operators. Thanks a lot . Now I have a whole new batch of errors... I fixed those two and got 4 new ones. Fixing those.. (Toggle Plain Text) C:\JAVA\MyJava\HOMEWORK\HW Assignment 1\4th Edition\Chapter 03\TempConversion.java:24: package keyboard does not exist degreeValue = new keyboard.nextInt(System.in); ^ C:\JAVA\MyJava\HOMEWORK\HW Assignment 1\4th Edition\Chapter 03\TempConversion.java:31: package keyboard does not exist typeOfConversion = new keyboard.next(System.in); ^ C:\JAVA\MyJava\HOMEWORK\HW Assignment 1\4th Edition\Chapter 03\TempConversion.java:33: incompatible types found : java.lang.String required: int switch (typeOfConversion) ^ C:\JAVA\MyJava\HOMEWORK\HW Assignment 1\4th Edition\Chapter 03\TempConversion.java:59: cannot find symbol symbol : method next(java.io.InputStream) location: class java.util.Scanner answer = keyboard.next(System.in); ^ 4 errors C:\JAVA\MyJava\HOMEWORK\HW Assignment 1\4th Edition\Chapter 03\TempConversion.java:24: package keyboard does not exist degreeValue = new keyboard.nextInt(System.in); ^ C:\JAVA\MyJava\HOMEWORK\HW Assignment 1\4th Edition\Chapter 03\TempConversion.java:31: package keyboard does not exist typeOfConversion = new keyboard.next(System.in); ^ C:\JAVA\MyJava\HOMEWORK\HW Assignment 1\4th Edition\Chapter 03\TempConversion.java:33: incompatible types found : java.lang.String required: int switch (typeOfConversion) ^ C:\JAVA\MyJava\HOMEWORK\HW Assignment 1\4th Edition\Chapter 03\TempConversion.java:59: cannot find symbol symbol : method next(java.io.InputStream) location: class java.util.Scanner answer = keyboard.next(System.in); ^ 4 errors Any help is highly appreciated with fixing these. I have no freakin clue what I'm doing. Well, I have somewhat of a clue.. but I'm guessing

Jun 9th, 2005, 12:12 PM	#18
shangnyun Programmer Join Date: Jun 2005 Posts: 34 Rep Power: 0	OK.. I realized now that the switch statement can only take char and int values. I need the switch statement to understand my F/f and C/f though.. and those are entered by the user using Scanner keyboard = new Scanner(System.in); typeOfConversion = keyboard.next(); I've declared typeOfConversion as a string at the beginning... so what now? How do I make my switch statement take the string value? Only thing I can think of is by type-casting the string value to a CHAR value, but that's not possible, right? Damn! Why is there no typeOfConversion = keyboard.nextChar(); !!?

Jun 9th, 2005, 12:29 PM	#19
Gilward Kukel Newbie Join Date: Jun 2005 Location: Vienna, Austria Posts: 15 Rep Power: 0	(Toggle Plain Text) switch(typeOfConversion.charAt(0)){ case 'c': ... } switch(typeOfConversion.charAt(0)){ case 'c': ... }

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

Programming Forums > Application Development > Java

Temperature Conversion Program - Help!