Easy program...need help (urgent)

[Zebra]

My program is supposed to ask a user for their first and last name. And, then return results.

One result is the first and last initials are the same, then it would return the user's name in uppercase.

And, if their initials are different then it would return the user's name in lowercase.

I have to use these methods:

toUpperCase()

toLowerCase()

[Zebra]

Please can somebody help me. I am lost.

[Eranga]

What you have tried?

[Zebra]

import java.util.Scanner;
import acm.graphics.*;
import acm.program.GraphicsProgram;
import java.awt.Color;
import java.awt.event.*;
import MyStaticMethods.Prog1;
import java.util.*;
import java.text.DecimalFormat;

public class MrInitials {


    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        {
			String result;

        	System.out.print(" enter  your first initial ");
            int f = scanner.nextInt();
            System.out.print(" enter last initial ");
            int l = scanner.nextInt();
            System.out.print(" enter your whole first name ");
            String first = scanner.nextLine();
            System.out.print(" enter your whole last name ");
            String last = scanner.nextLine();
            System.out.print(" Are you first and last initials the same? ");
            String answer = scanner.nextInt();

         	if(answer = "yes")
            {
				first.toUpperCase();
				last.toUpperCase();
			}
			else
			{
				first.toLowerCase();
				last.toLowerCase();
			}
			result = "Your name is " + first +  last;
 			System.out.println(result);


       	}
    }


}

I keep getting this error

H:\Java Programs\Final Review\MrInitials.java:29: incompatible types
found   : java.lang.String
required: boolean
         	if(answer = "yes")
                          ^
1 error

[Zebra]

I am not even doing it right. I am taking the easy way. If you would can you modify my code for it to find the initials instead of me asking if they are the same?

[Eranga]

Change it like this.

if(answer.equals("Yes"))

[Zosden]

Why not instead of having the user input their initials just take the first character of each string and compare them with the .equals. Remember the first character is in the 0 position.

[Zebra]

Why not instead of having the user input their initials just take the first character of each string and compare them with the .equals. Remember the first character is in the 0 position.

Thanks both of you. What code would I use for this. Like, how to I implement this? This method is way better than asking the user if their initials are the same. That is kind of cheating, lol. Thanks to anyone that can help.

[derrickD]

To get the first character of the string use the substring() method of the String class. Check the API:
String (Java 2 Platform SE 5.0)

[Zebra]

Sorry, I still don't understand where to put it. Sorry, I have only been programming a couple months.

[Zosden]

do if(firstname.substring(0).equals(lastname.substrin g(0)).

[gogoc]

u can use first.equalsIgnoreCase(last)
and then convert first an last accordingly

[gogoc]

import java.util.Scanner;
import acm.graphics.*;
import acm.program.GraphicsProgram;
import java.awt.Color;
import java.awt.event.*;
import MyStaticMethods.Prog1;
import java.util.*;
import java.text.DecimalFormat;

public class MrInitials {


    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        {
			String result;

        	System.out.print(" enter  your first initial ");
            int f = scanner.nextInt();
            System.out.print(" enter last initial ");
            int l = scanner.nextInt();
            System.out.print(" enter your whole first name ");
            String first = scanner.nextLine();
            System.out.print(" enter your whole last name ");
            String last = scanner.nextLine();
            System.out.print(" Are you first and last initials the same? ");
            String answer = scanner.nextInt();

         	if(answer = "yes")
            {
				first.toUpperCase();
				last.toUpperCase();
			}
			else
			{
				first.toLowerCase();
				last.toLowerCase();
			}
			result = "Your name is " + first +  last;
 			System.out.println(result);


       	}
    }


}

I keep getting this error

H:\Java Programs\Final Review\MrInitials.java:29: incompatible types
found   : java.lang.String
required: boolean
         	if(answer = "yes")
                          ^
1 error

here u have used assignment
u should use comparison == so that a boolean is returned

[Zebra]

Thanks guys. I will try this and post results. I appreciate the help.

[Zebra]

I can't get it to work all the way, I ran out of time anyway for this project. Thanks for the help guys. I will still get a good grade for making this far. Thanks.

And yes, my teacher lets us use anything on the internet (including forums, so this isn't cheating, lol).

Here is as far as I got:

import java.util.Scanner;
import acm.graphics.*;
import acm.program.GraphicsProgram;
import java.awt.Color;
import java.awt.event.*;
import MyStaticMethods.Prog1;
import java.util.*;
import java.text.DecimalFormat;

public class MrInitials {


    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

			String result;

            System.out.print(" enter your first name ");
            String first = scanner.nextLine();
            System.out.print(" enter your last name ");
            String last = scanner.nextLine();


         	if(first.substring(0).equals(last.substring(0)))
            {
				first.toUpperCase();
				last.toUpperCase();
				result = "Your name is " + first + last;

			}
			else
			{
				first.toLowerCase();
				last.toLowerCase();
				result = "Your name is " + first + last;

			}

		System.out.println(result);
    }
}

[Eranga]

Can you briefly tell me what you really wants to do?

[Eranga]

here u have used assignment
u should use comparison == so that a boolean is returned

Not a good choice though.

[Eranga]

@Zebra

Here is the error you have made.

if(first.substring(0).equals(last.substring(0)))

Passing argument in wrong way. If you give one argument at the substring() it is the beginning index. So sub string derived is up to the end of the string.

import java.util.Scanner;

/**
 *
 * @author Eranga Tennakoon
 */
public class StringTest {

    /**
     * @param args the command line arguments
     */
   
    public static void main(String[] args) {
        // TODO code application logic here
        Scanner ss = new Scanner(System.in);
        
        System.out.println("String one: ");
        String str1 = ss.next();
        
        System.out.println("String two");
        String str2 = ss.next();
        
        if(str1.substring(0, 0).equals(str2.substring(0, 0))) {
            System.out.println("Your name is : " + str1.toUpperCase() +
                    " " + str2.toUpperCase());
        }
        else {
            System.out.println("Your name is : " + str1.toLowerCase() +
                    " " + str2.toLowerCase());            
        }
    }

}

[JT4NK3D]

just wondering why did you import all those classes?

[Eranga]

May be he has more things done on his code. Because some packages are not in Java libraries too. :)