Assigning strings a value?

Question

I had another problem with nested if structure, i have tried ever way i could think of possibly to assign the value to a string. hard to explain, example below
//classCode is input from user
// classYear is the current year in highschool, i keep on getting errors no matter which way i assign the string!
i'm trying to figure out how to do this correctly
If(ClassCode = ("FR") // i know it's not correct, but i have no idea classyear= "Freshman"; // what is? same for this assignmeny!
If(grdP = 100)
grade = "A"; // results in a error, i'm real confused

Answer 1

Try using a switch statement to solve your problem. It'll be cleaner code and easier to read and understand.
//declare a variable
int usrInput;
if( ( usrInput >= 10 ) || ( usrInput <= 1 2) )
switch(classYear)
case 10:
classyear = "Freshman";
case 11:
classyear = "Sofmore"; etc.
Not sure if this will help but here's a project that I worked on for a class and it was assigning a string value to a variable. I used a switch statement (do you know what those are?) to determine which value was selected.
I know this is a bit long but I think it's easy enough to understand. You will have to determine what value you want to put in your if statement. Switch does not use Strings so you'll have to use an integer to determine what is selected.
import java.text.NumberFormat;                              // Java core packages
import java.util.Locale;
import javax.swing.JOptionPane;                              // Java extension packages
public class A4_512                                             // begin class definition
                                                                 // main method begins execution
                                                                 // of Java application
     public static void main( String args[] )
          int     counter,                                        // counter variable
               itmSold,                                        // holds usrInput for product sold as int data type
               qtySold = 0;                                   // holds usrInput for quantity sold as int data type
     double     itmValue = 0.00,                              // value of item sold
               totSales = 0.00;                              // total value of items sold
     String     usrInputItm = "",                              // holds usrInput for product sold as int String type
               usrInputQty = "",                              // holds usrInput for product sold as int String type
               currDay = "",                                   // String value for current day
               results = "";                                   // holds output results
                                                                 // Begin counter controlled loop
          for( counter = 0; counter <= 6; counter++ )
               switch ( counter )                              // Begin switch statement to determine day of the week
                    case 0:
                         currDay = "Sunday";
                         break;
                    case 1:
                         currDay = "Monday";
                         break;
                    case 2:
                         currDay = "Tuesday";
                         break;
                    case 3:
                         currDay = "Wednesday";
                         break;
                    case 4:
                         currDay = "Thursday";
                         break;
                    case 5:
                         currDay = "Friday";
                         break;
                    case 6:
                         currDay = "Saturday";
                         break;
                                                                 // prompt for input and read
                                                                 // product number then convert
                                                                 // data type to integer data type
               usrInputItm = JOptionPane.showInputDialog(
                    "Please enter a product number purchased on " + currDay + "\n\n Enter 0 to enter data for next day." );
               itmSold = Integer.parseInt( usrInputItm );
               while( itmSold != 0 )                         // Begin sentinel control while loop
                                                                 // if statement to determine correct product number entered
                    if( ( itmSold > 5 ) || ( itmSold < 0 ) )
                                                                 // display error message
                         JOptionPane.showMessageDialog ( null, "You must enter product number from 1 through 5.\nPlease try again.",
                              "Wrong Product Number Error", JOptionPane.ERROR_MESSAGE );
                                                                 // prompt for input and read
                                                                 // product number then convert
                                                                 // data type to integer data type
                         usrInputItm = JOptionPane.showInputDialog(
                              "Please enter a product number purchased on " + currDay + "\n\n Enter 0 to enter data for next day." );
                         itmSold = Integer.parseInt( usrInputItm );
                    else
                         switch ( itmSold )               // begin switch statement to determine value of itmSold
                              case 1:
                                   itmValue = 2.98;
                                   break;
                              case 2:
                                   itmValue = 4.50;
                                   break;
                              case 3:
                                   itmValue = 9.98;
                                   break;
                              case 4:
                                   itmValue = 4.49;
                                   break;
                              case 5:
                                   itmValue = 6.87;
                                   break;
                         }                                        // end switch statement
                                                                 // prompt for input and read
                                                                 // quantity sold then convert
                                                                 // data type to integer data type
                         usrInputQty = JOptionPane.showInputDialog(
                              "Please enter quantity sold on " + currDay );
                         qtySold = Integer.parseInt( usrInputQty );
                         totSales += itmValue * qtySold;
                                                                 // prompt for input and read
                                                                 // product number then convert
                                                                 // data type to integer data type
                         usrInputItm = JOptionPane.showInputDialog(
                              "Please enter a product number purchased on " + currDay + "\n\n Enter 0 to enter data for next day." );
                         itmSold = Integer.parseInt( usrInputItm );
                    }                                             // end if statement to determine correct product number entered
               }                                                  // end while statement
          }                                                       // end for loop
                                                                 // set currency format for output
          NumberFormat moneyFormat =
               NumberFormat.getCurrencyInstance( Locale.US );
                                                                 // add total to results
          results = "Total Sales for the week: " + moneyFormat.format( totSales );
                                                                 // show output
          JOptionPane.showMessageDialog ( null, results,
               "Results", JOptionPane.PLAIN_MESSAGE );
          System.exit( 0 );                                   // terminate application
     }                                                            // end main method
}          // end class definition