[英]Java system out println printing more than once
does anyone know why "Wrong!!!" 有谁知道为什么“错!!!” is printing out 6 times? 正在打印6次? Is this something to do with my array list as it contains 6 person ticket details in it. 这与我的阵列列表有关吗,因为它包含6人票证详细信息。 Thank-you in advance... 先感谢您...
public class Method1 {
public static void main(String[] arg) {
Method1 sc = new Method1();
sc.run();
}
private void run() {
PersonData p = new PersonData();
List<PersonType> personDetailsList = (List<PersonType>) p.getList();
int input;
try {
do {
Scanner in = new Scanner(System.in);
System.out.println("Enter person ticket number");
input = in.nextInt();
for (PersonType q : personDetailsList) {
if (q.getPersonNumber() == input) {
System.out.println("Person Ticket Number: " + q.getPersonNumber() + "\n"
+ "Person Ticket Name: " + q.getPersonName() + "\n");
break;
}
else if (q.getPersonNumber() != input) {
System.out.println("Wrong!!!");
}
}
} while (input != -1);
System.out.println("Bye");
} catch (Exception e) {
System.out.println(e);
}
}
}
try this 尝试这个
private void run() {
PersonData p = new PersonData();
List<PersonType> personDetailsList = (List<PersonType>) p.getList();
int input;
boolean flag = false;
try {
do {
Scanner in = new Scanner(System.in);
System.out.println("Enter person ticket number");
input = in.nextInt();
for (PersonType q : personDetailsList) {
if (q.getPersonNumber() == input) {
System.out.println("Person Ticket Number: " + q.getPersonNumber() + "\n"
+ "Person Ticket Name: " + q.getPersonName() + "\n");
flag=true;
break;
}
}
if(!flag){
System.out.println("Wrong!!!");
}
} while (input != -1);
System.out.println("Bye");
} catch (Exception e) {
System.out.println(e);
}
}
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