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Skip to comments (3) java while
Posted by guest on Aug 10 2006 @ 09:05  :: 2838 unique visits

class lesson4d

{

static public void main(String [] args)
{
int choice=0;
String value="";
while (choice != 5)
{
value = JOptionPane.showInputDialog(
"Enter 1 for Grade Problem\n" +
"Enter 2 for Circle Problem\n" +
"Enter 3 for Rectangle Problem\n" +
"Enter 4 for Even-Odd Problem\n" +
"Enter 5 to Exit");
choice = Integer.parseInt(value);

switch (choice)
{
case 1:

int input1;
String inputGrade1;
String inputGrade2;
float midGrade = -1;
float finGrade = -1;
float result = 0;

char letGrade = 'z';

String substringInputGrade1;
char substringChoice = 0;

inputGrade1 = JOptionPane.showInputDialog("Enter midterm grade:");
midGrade = Float.parseFloat(inputGrade1); // convert string to type Float

if (midGrade < 0 || midGrade > 100)
{
JOptionPane.showMessageDialog(null, "Out of range, please enter grade again:");
}

while (finGrade < 0 || finGrade > 100 ) // Input of Final Grade
{
inputGrade2 = JOptionPane.showInputDialog("Enter grade received for final:");
finGrade = Float.parseFloat(inputGrade2);

if (finGrade < 0 || finGrade > 100)
{
JOptionPane.showMessageDialog(null, "Out of range, please enter grade again:");
}
}

DecimalFormat decResult = new DecimalFormat( "0.00");
  result = (2 * midGrade + finGrade) / 3;
letGrade = assignGrade (result);

JOptionPane.showMessageDialog(null,
"Grade received in class is: " + decResult.format (result) +
"\nLetter grade = " + letGrade ,
"Grade received", JOptionPane.INFORMATION_MESSAGE);
break;
}
} // close first while loop
System.exit(0);

}
  static char assignGrade ( float result )
{
char letGradeF = 'z';
if ( result >= 90 )
letGradeF = 'A' ;
else if ( result >= 80 )
letGradeF = 'B';
else if ( result >= 70 )
letGradeF = 'C';
else if ( result < 70 )
letGradeF = 'F';
return letGradeF;
}

}

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