謝謝你們,並且出現了新的問題。Java - While循環不起作用後的IF語句
即使列表和用戶輸入的是正確的,它仍然會打印出來,我已經發現了這個問題"Your movie or/and theatre cannot be found."
的事情。當列表(電影0-1項目&影院0-1項目)中有1個項目時,它不會打印出來"Your movie or/and theatre cannot be found."
但是,當其中有1個項目(電影1件&影院2或影院2 &影院1),它會打印出if(found == false)
聲明。
public void addScreening(){
System.out.println("-ADD NEW SCREENING-");
String mTitle = Helper.readString("Enter movie title > ");
String tName = Helper.readString("Enter theatre name > ");
boolean found = true;
while(found == true){
for (int i = 0; i < movies.size(); i++) {
for (int j = 0; j < theatres.size(); j++) {
if ((movies.get(i).getTitle().contains(mTitle) || mTitle.contains(movies.get(i).getTitle())) &&
(theatres.get(j).getName().contains(tName) || tName.contains(theatres.get(j).getName()))) {
int year = Helper.readInt("Enter year > ");
int month = Helper.readInt("Enter month > ");
int day = Helper.readInt("Enter day > ");
int hour = Helper.readInt("Enter hour > ");
int min = Helper.readInt("Enter min > ");
screenings.add(new MovieScreening(Helper.thisDate(year,
month, day, hour, min), movies.get(i),theatres.get(j), 0));
System.out.println("Added successfully");
}else if((!movies.get(i).getTitle().contains(mTitle) || !mTitle.contains(movies.get(i).getTitle()))
|| (!theatres.get(j).getName().contains(tName) || !tName.contains(theatres.get(j).getName()))){
found = false;
}
}
}break;
}if (found == false){
System.out.println("Your movie or/and theatre cannot be found.");
found = true;
}
}
輸出
-ADD NEW SCREENING-
Enter movie title > 3
Enter theatre name > 3
Enter year > 3
Enter month > 3
Enter day > 3
Enter hour > 3
Enter min > 3
Added successfully
Your movie or/and theatre cannot be found.
'如果(發現==假)',甚至更好'如果(!找到)'' –
='受讓人,''==如果進行比較(發現= FALSE)'應該是'。 –
切勿將布爾值與「true」或「false」進行比較。按原樣使用它。 –