« Which statement is logically equivalent to "If it is warm, then i go swimming"?
what accurately describes the effect on the area of a circle if the diameter is increased by a factor of 2? »

How do I run an if statement with a char input?

April 7, 2011 - 5:18 am

For example I want the user to input either A, B, or C. I then want my method to execute based on which of those letters were entered. What do I put in the if statement to get it to work? I understand the Scanner object and all that basic stuff. I just want to know what is the proper syntax to get an if statement to work with a single char if possible. Thank you.

If I’m not mistaken, you’re using Java, right? (just to make sure I didn’t talk different ‘language’) since you have the Scanner object.

After you import the Scanner object, we then define a variable to store the user input,
since you only want to ‘catch’ one character, I suggest "CHAR" is the best variablel type since it’s small

then we store the user’s response on that variable. Therefore, we can do you intend to do.
=================================================
import java.lang.* ; //for the ‘equalsIgnoreCase’ comparison
import java.util.Scanner.*;

public class void ClassName(){
char c;
Scanner input= new Scanner();
char = input.nextChar();

//you can use either ’switch…case’ or ‘if..else’
//let’s just if
if(c.equalsIgnoreCase(’A'))
{
//some codes
}
else if(c.equalsIgnoreCase(’A'))
{
//some codes
}
else
{
//some codes
}
}

==================================================
hope it helps

regards
Ahmad Nasikun
ahmadnasikun.wordpress.com
nasikun_jpr@yahoo.com

Posted if statement |

3 Responses to “How do I run an if statement with a char input?”

  1. Blackcompe Says:
    April 7th, 2011 at 10:38 am

    Presuming that your using java.util.Scanner, you could either:

    String s = scanner.nextLine();

    switch(s.charAt(0)) {
    case ‘A’:
    case ‘B’:
    case ‘C’:
    }

    OR

    if(s.equals("A")) {

    }…..
    References :

  2. what? Says:
    April 7th, 2011 at 10:54 am

    String input = "A";

    if ( input.equals("A") ) {
    ….. // if A do this
    } else if ( input.equals("B") ) {
    ….. // if B do this
    } else {
    ….. // if C do this
    }
    References :

  3. Jobbernowl Says:
    April 7th, 2011 at 11:24 am

    If I’m not mistaken, you’re using Java, right? (just to make sure I didn’t talk different ‘language’) since you have the Scanner object.

    After you import the Scanner object, we then define a variable to store the user input,
    since you only want to ‘catch’ one character, I suggest "CHAR" is the best variablel type since it’s small

    then we store the user’s response on that variable. Therefore, we can do you intend to do.
    =================================================
    import java.lang.* ; //for the ‘equalsIgnoreCase’ comparison
    import java.util.Scanner.*;

    public class void ClassName(){
    char c;
    Scanner input= new Scanner();
    char = input.nextChar();

    //you can use either ’switch…case’ or ‘if..else’
    //let’s just if
    if(c.equalsIgnoreCase(’A'))
    {
    //some codes
    }
    else if(c.equalsIgnoreCase(’A'))
    {
    //some codes
    }
    else
    {
    //some codes
    }
    }

    ==================================================
    hope it helps

    regards
    Ahmad Nasikun
    ahmadnasikun.wordpress.com
    nasikun_jpr@yahoo.com
    References :

Leave a Reply