[Maxor]

Hey, ich wollte in meinen Pircbot einen Nullstellenrechner einbauen.

public class MyBot extends PircBot {

static ArrayList<String> calcvar = new ArrayList<String>();
static ArrayList<Double> calcvarval = new ArrayList<Double>();
static String botName = "Maxorbot";

public void onMessage(String channel, String sender,
String login, String hostname, String message) {
if(message.contains("!nullstelle")){
double ersterxwert, zweiterxwert;
String equation[] = message.split(" ");
String value1 = equation[1];
String value2 = equation[2];
String value3 = equation[3];
boolean var1Exists = calcvar.contains(equation[1]);
boolean var2Exists = calcvar.contains(equation[2]);
boolean var3Exists = calcvar.contains(equation[3]);
if(var1Exists == true){
value1 = Double.toString(calcvarval.get(calcvar.indexOf(equ ation[1])));
}
if(var2Exists == true){
value2 = Double.toString(calcvarval.get(calcvar.indexOf(equ ation[2])));
}
if(var3Exists == true){
value3 = Double.toString(calcvarval.get(calcvar.indexOf(equ ation[3])));
}
try{
if (Math.sqrt((Double.parseDouble(value2)*(Double.par seDouble(value2)))-4*(Double.parseDouble(value1))*(Double.parseDouble (value3))) <= 0) {
sendMessage(channel, sender + ": Die Diskriminante wird negativ oder 0.");
}
else
ersterxwert = (double)(-(Double.parseDouble(value2))+Math.sqrt((Double.par seDouble(value2))*(Double.parseDouble(value2)))-4*(Double.parseDouble(value1))*(Double.parseDouble (value3)))/(2*(Double.parseDouble(value1)));
zweiterxwert = (double)(-(Double.parseDouble(value2))-Math.sqrt((Double.parseDouble(value2))*(Double.par seDouble(value2)))-4*(Double.parseDouble(value1))*(Double.parseDouble (value3)))/(2*(Double.parseDouble(value1)));
sendMessage(channel, "X1: " + ersterxwert);
sendMessage(channel, "X2: " + zweiterxwert);
}catch(Exception e){
}
}

Ich bekomme bei "sendMessage(channel, "X1: " + ersterxwert);" folgenden Fehler.

Multiple markers at this line
- The local variable ersterxwert may not have been initialized

Kann mir jemand erklären wieso? (Bin nicht wirklich gut in Java )

Grüße

-Maxor