ValidInput errors and return error.

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February 9th, 2013, 11:20 AM

XxdarkstarxX

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Join Date: Feb 2013

Posts: 3

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ValidInput errors and return error.

I am getting an error on the return isValid, and the validInput areas of my methods. how can i solve these problems? On the validInput error it says void is an invalid type for the variable, and the second validInput error says illegal modifier for parameters validInput only final is permitted. For the return isValid, it says void methods cannot have a return.

Code:

 import java.util.Scanner;
    
    
    public class Project2 {
    
    	private static final Object False = null;
    	private static final int number = 0;
    	private static final int CS = 0;
    	private static final int fTemp = 0;
    	private static final int fDist = 0;
    	private static final int ME = 0;
    	private static final int pWeight = 0;
    	private static final int KL = 0;
    
    	/**
    	 * @param args
    	 * @return 
    	 */
    	public static void main(String[] args) {
    		// TODO Auto-generated method stub
    		validInput();
    	
    		
    				//Declare constants
    				final double CS = (5.0 / 9);
    				final double ME = 0.3048;
    				final double KL = 0.4536;
    				
    				//Declare variables
    				Scanner input = new Scanner(System.in);
    				String entry;
    				int fTemp, fDist, pWeight;
    				String Inputnumber = null;
    				double cTemp, mDist, kWeight, K, I, S;
    				
    				System.out.println(" A B ");
    				System.out.println(" Project Title "); 
    				
    				//Get Input
    				System.out.print("Enter a Fahrenheit temperature (integer): ");
    				fTemp = input.nextInt();
    				System.out.print("Enter a distance in feet (integer): ");
    				fDist = input.nextInt();
    				System.out.print("Enter a weight in pounds (integer): ");
    				pWeight = input.nextInt();							
    				
    				//Perform Conversions
    				cTemp = fTemp * CS;
    				mDist = fDist * ME;
    				kWeight = pWeight * KL;
    				K = (fTemp + 459.67) * 5/9;
    				I = fDist * 12;
    				S = pWeight * 0.0714285714;
    				
    				//Methods           (error here)		
    				private static void validInput(int i; int j; {
    					// TODO Auto-generated method stub
    					boolean withinRange = true;
    					
    					if (i < 0 || i > 212);
    					System.out.println("Out of range");
    					withinRange = false;
    							
    				}
    
                                                           (error here)      (error here on entry)
    				private static boolean validInput(String entry); { 
    				// TODO Auto-generated method stub
    					boolean isValid = false;
    							
    					try {
    						Integer.parseInt(entry);
    						
    						isValid = true;
    						
    					}
    					catch  (Exception ex) {
    					System.out.println("Entered value is invalid");
    					}
    					
    					
    					(error here)
    					return isValid;
    				
    				
    				//Display Report
    				System.out.println(fTemp  + " fahrenheit " + cTemp + " celsius "  + K + " Kelvin ");
    				System.out.println(fDist  +  " feet "  + mDist + " meters " + I + " Inches ");
    				System.out.println(pWeight + " pounds " + kWeight + " kilograms " + S + "Stones ");
    				
    				}
    	
    	
    			
    			
    				
    	
    	
    		
    		
    		
    		
    				
    
    	}
    
    	private static void validInput() {
    		// TODO Auto-generated method stub
    		
    	}
    }

My project is suppose to look like this as the ending result:
Name
Project title

Enter a Fahrenheit temperature (integer) [0-212]: 212
Enter a distance in feet (integer) [0-100]: 100
enter a weight in pounds (integer) [0-100]: 100

212 Fahenheit is 100.0 Celsius and 373.150 Kelvin
100 Feet is 30.480 Meters and 1200.00 Inches
100 Pounds is 45.360 Kilograms and 7.143 Stones

Please enter a fahrenheit temperature (integer) [0-212]: abc
The entered temperature value is invalid.

Please enter a fahrenheit temperature (integer) [0-212]: 213
The entered value is out of range [0-212]

My code currently looks like this;
A B
Project Title
Enter a Fahrenheit temperature (integer): 212
Enter a distance in feet (integer): 100
Enter a weight in pounds (integer): 100
212 fahrenheit 117.77777777777779 celsius 373.15000000000003 Kelvin
100 feet 30.48 meters 1200.0 Inches
100 pounds 45.36 kilograms 7.14285714Stones

So I know I dont have everything coded right so can anyone help as to how to get the results im supposed to get?

February 9th, 2013, 01:09 PM

bullet

Java Junkie

Join Date: Jan 2004

Location: Mobile, Alabama

Posts: 3,825

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Note that you can't place a method directly inside another method.

February 9th, 2013, 01:24 PM

XxdarkstarxX

Registered User

Join Date: Feb 2013

Posts: 3

Time spent in forums: 23 m 9 sec
Reputation Power: 0

Quote:

Originally Posted by bullet

Note that you can't place a method directly inside another method.

Here is my updated code. How would I put both of these methods in there so they arent directly inside each other and that way both of them are executed?

Code:

import java.util.Scanner;

public class Project2 {

	
	/**
	 * @param args
	 * @return 
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
	
		
				//Declare constants
				final double CS = (5.0 / 9);
				final double ME = 0.3048;
				final double KL = 0.4536;
				
				//Declare variables
				Scanner input = new Scanner(System.in);
				String entry;
				int fTemp = 0, fDist, pWeight;
				String Inputnumber = null;
				double cTemp, mDist, kWeight, K, I, S;
				
				System.out.println(" A B ");
				System.out.println(" Project Title "); 
				
				//Get Input
				System.out.print("Enter a Fahrenheit temperature (integer): ");
				fTemp = input.nextInt();
				System.out.print("Enter a distance in feet (integer): ");
				fDist = input.nextInt();
				System.out.print("Enter a weight in pounds (integer): ");
				pWeight = input.nextInt();							
				
				//Perform Conversions
				cTemp = fTemp * CS;
				mDist = fDist * ME;
				kWeight = pWeight * KL;
				K = (fTemp + 459.67) * 5/9;
				I = fDist * 12;
				S = pWeight * 0.0714285714;
				
				//Display Report
				System.out.println(fTemp  + " fahrenheit " + cTemp + " celsius "  + K + " Kelvin ");
				System.out.println(fDist  +  " feet "  + mDist + " meters " + I + " Inches ");
				System.out.println(pWeight + " pounds " + kWeight + " kilograms " + S + "Stones ");
	}
				//Methods		
				private static void validInput(int a) {
					// TODO Auto-generated method stub
					boolean withinRange = true;
					
					if (a < 0 || a > 212);
					System.out.println("Out of range");
					withinRange = false;
							
				
					validInput();
				}
				
				private static boolean validInput(String entry) { 
				// TODO Auto-generated method stub
					int fTemp, fDist, pWeight;
					boolean isValid = false;
							
					try {
					fTemp = Integer.parseInt(entry);
					fDist=Integer.parseInt(entry);
					pWeight=Integer.parseInt(entry);
						isValid = true;
						
					}
					catch  (Exception ex) {
					System.out.println("Entered value is invalid");
					
					validInput();
					}
					
					
					
					return isValid;
				
				
						
				}
	private static void validInput() {
		// TODO Auto-generated method stub
		
	}
}

February 9th, 2013, 01:50 PM

bullet

Java Junkie

Join Date: Jan 2004

Location: Mobile, Alabama

Posts: 3,825

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It looks like your code is compiling and running. Is there a problem?

February 9th, 2013, 05:08 PM

XxdarkstarxX

Registered User

Join Date: Feb 2013

Posts: 3

Time spent in forums: 23 m 9 sec
Reputation Power: 0

Quote:

Originally Posted by bullet

It looks like your code is compiling and running. Is there a problem?

I need the two methods i have in there to work. For example a max value of 212 so if i do 213 it says that the value is out of range and also if i put abc for a temperature it says the value is invalid. but other then that it works.

February 10th, 2013, 05:50 AM

NormR

Contributing User

Join Date: Aug 2010

Location: SW Missouri

Posts: 2,955

Time spent in forums: 1 Week 6 Days 2 h 53 m 34 sec
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Also posted at:http://www.javaprogrammingforums.co....html#post95090

ValidInput errors and return error.

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