Java

private boolean validateInput(String input1, String input2)
    {

        Boolean[] inputValidArray = {false , false};
        String[] inputArray = {input1, input2};

        JTextField[] textFieldArray = {jTextField1, jTextField2};

        float numberToValidate = 0;
        int counter = 0;   
        String errorMessage = "";

        while (!inputValidArray[0] || !inputValidArray[1])
        {
            try
            {
                // Check for empty or null input
                if (!(inputArray[counter].isEmpty() || inputArray[counter] == null))
                {
                    numberToValidate = Float.valueOf(inputArray[counter]);
                    inputValidArray[counter] = true;                
                }
                else
                {
                    errorMessage = "This field can not be left blank!\n" +
                                   "  Please enter a valid number!\n" +
                                   "  (example: 123.45 or -123.45)";

                    Create_Error_Message_Dialog_Box(errorMessage); 

                    textFieldArray[counter].requestFocusInWindow();
              
                }

            }
            catch (NumberFormatException nfe)
            {
                errorMessage = inputArray[counter] + " is not a valid number!\n" +
                               "Please enter a valid number!\n" +
                               "(example: 123.45 or -123.45)";

                Create_Error_Message_Dialog_Box(errorMessage);

                textFieldArray[counter].requestFocusInWindow();
                textFieldArray[counter].selectAll();

            }

            counter += 1;

        }
        
        return (inputValidArray[0] && inputValidArray[1]);
    }

{
public static void main(String[] args){
int x,t;
double k;
x = 56;
k = 7;
x = 6 + k;
k = x*3.5 + 5
t = t + x;
System.out.println(x);
System.out.println(k);
System.out.println(t);
}
}

{
    public static void main(String[] args){
        int t; //Added temp1 and temp2 as an integer
        double x,k,temp1,temp2; //Made x a double as program complains of loss of precision when a integer variable equals a double variable
        x = 56;
        k = 7;
        temp1 = x; //Have given old x value new variable name
        x = 6+k;
        temp2 = k;
        k = x*3.5+5;
        //t still to do
        System.out.println(x);
        System.out.println(k);

    }
}