public class calculator {
static char operator;
static String operatorWord;
static String nameOfFirstNumber;
static String nameOfSecondNumber;
static double firstNumber;
static double secondNumber;
static int response2;
public static void setResponse2(boolean b){
if(b = true){
response2 = JOptionPane.YES_OPTION;
}
else if(b = false){
response2 = JOptionPane.NO_OPTION;
}
else;
}
public static void setOperator(char c){
operator = c;
}
public static void setOperatorWord(String s) throws NotAnOperatorException{
operatorWord = s;
}
public static String getOperatorWord(char c, int i) throws NotAnOperatorException{
if(c == '*'){
return "Multiplication";
}
else if(c == '/'){
return "Division";
}
else if(c =='+'){
return "Addition";
}
else if(c == '-'){
return "Subtraction";
}
else if(c == '%'){
return "Remainder";
}
if(i < 2){
throw new NotAnOperatorException();
}
return null;
}
public static void defineNameOfNumbers(char c){
if(c == '*'){
nameOfFirstNumber = "multiplicand";
nameOfSecondNumber = "multiplier";
}
else if(c == '/'||c == '%'){
nameOfFirstNumber = "dividend";
nameOfSecondNumber = "divisor";
}
else if(c == '+'){
nameOfFirstNumber = "addend";
nameOfSecondNumber = "addend";
}
else if(c == '-'){
nameOfFirstNumber = "subtrahend";
nameOfSecondNumber = "minuend";
}
}
public static double getRemainder(){
if(operator == '/'||operator == '%'){
return firstNumber%secondNumber;
}
else{
return (Double) null;
}
}
public static double getAnswer(){
if(operator == '*'){
return firstNumber*secondNumber;
}
else if(operator == '/'){
return firstNumber/secondNumber;
}
else if(operator == '%'){
return firstNumber%secondNumber;
}
else if(operator == '+'){
return firstNumber+secondNumber;
}
else if(operator == '-'){
return firstNumber-secondNumber;
}
else{
return (Double) null;
}
}
public static String getRemainderString(){
//get the remainder & string...//
if(operator == '/'){
int answer = (int) (firstNumber/secondNumber);
int remainder = (int) (firstNumber%secondNumber);
return "\n"+answer+" remainder "+remainder;
}
else{
return "";
}
}
/**
* @param args
* @throws NotAnOperatorException
* @throws HeadlessException
*/
public static void main(String[] args) throws HeadlessException, NotAnOperatorException {
//end of catch statements//
do{
//get the operator etc. I know it's a bit overdone.//
try{
char operatorThing = JOptionPane.showInputDialog("Operator:").charAt(0);
setOperator(operatorThing);
setOperatorWord(getOperatorWord(operator, 1));
defineNameOfNumbers(operatorThing);
}
//catch a NotAnOperatorException (defined with NotAnOperatorException.class)//
catch(NotAnOperatorException exc){
Writer writer = new StringWriter();
PrintWriter printWriter = new PrintWriter(writer);
exc.printStackTrace(printWriter);
String excSentence = writer.toString();
JOptionPane.showMessageDialog(null,"Something went wrong... Here's the rundown on what happened:\n"+excSentence+"\nWe've figured out what happened, though.\nThat's not an operator...\nRestart to rerun it, it will exit for safety.");
System.exit(0);
}
//catch a null pointer//
catch(NullPointerException exc){
JOptionPane.showMessageDialog(null,"You clicked Cancel. Press OK to quit.");
System.exit(0);
}
//catch an other exception//
catch(Exception exc){
Writer writer = new StringWriter();
PrintWriter printWriter = new PrintWriter(writer);
exc.printStackTrace(printWriter);
String excSentence = writer.toString();
JOptionPane.showMessageDialog(null,"Something went wrong... Here's the rundown on what happened:\n"+excSentence+"\nI have no idea what happened.\nRestart to rerun it, it will exit for safety.");
System.exit(0);
}
//get the response with "int response"//
int response;
response = JOptionPane.showConfirmDialog(null, "Would you like to start "+getOperatorWord(operator, 2)+" Calc?");
if(response == JOptionPane.YES_OPTION){
String numberOne = JOptionPane.showInputDialog("X"+operator+"Y=Z\nEnter the "+nameOfFirstNumber+" (the first number.)");
firstNumber = Double.parseDouble(numberOne);
String numberTwo = JOptionPane.showInputDialog(firstNumber+operator+"Y=Z\nEnter the "+nameOfSecondNumber+" (the second number.)");
secondNumber = Double.parseDouble(numberTwo);
if(operator == '/'||operator == '%'){
int response3 =
JOptionPane.showConfirmDialog(null, firstNumber+operator+secondNumber+"="+getAnswer()+getRemainderString()+"\n Would you like to start "+getOperatorWord(operator, 2)+" Calc again?");
if(response3 == JOptionPane.YES_OPTION){
setResponse2(true);
}
else if(response3 == JOptionPane.NO_OPTION||response3 == JOptionPane.CANCEL_OPTION){
setResponse2(false);
System.exit(0);
}
}
else{
int response3 =
JOptionPane.showConfirmDialog(null, firstNumber+operator+secondNumber+"="+getAnswer()+"\n Would you like to start "+getOperatorWord(operator, 2)+" Calc again?");
if(response3 == JOptionPane.YES_OPTION){
setResponse2(true);
}
else if(response3 == JOptionPane.NO_OPTION||response3 == JOptionPane.CANCEL_OPTION){
setResponse2(false);
System.exit(0);
}
}
}
}
while(response2 == JOptionPane.YES_OPTION);
}
}
さて、私はそれがコードの負荷であることを知っています. 申し訳ありませんが... というダイアログが表示されたら"X"+operator+"Y=Z\nEnter the "+nameOfFirstNumber+" (the first number.)"、(次のダイアログで) 1 と入力すると、"48.0Y=Z"(分割モードの場合) と表示されます。演算子も表示されず、48 と入力しませんでした。 1 と入力しました。他のモードでは、40 から 50 までの数字が表示されます。とても奇妙です...
ありがとう！
[編集]わかりました、それは ASCII と関係があります。しかし、どうすれば修正できますか？
[編集]なぜオペレーターが表示されないのですか?