所以我想弄清楚我的错误是什么，每当我运行这个程序时，它都会一直给我这个错误：
线程“main”java.util.InputMismatchException中的异常 at java.util.Scanner.throwFor（Scanner.java:864） 在java.util.Scanner.next（Scanner.java:1485） 在java.util.Scanner.nextInt（Scanner.java:2117） 在java.util.Scanner.nextInt（Scanner.java:2076） 在Lesson_20_Activity.main（Main.java:452） 在Ideone.assertRegex（Main.java:85） 在Ideone.assertRegex（Main.java:76） 在Ideone.test（Main.java:40） 在Ideone.main（Main.java:29）
这是我的代码。
import java.util.Scanner;
import java.lang.Math;
class Lesson_20_Activity{
public static void main(String[] args)
{
Scanner scan = new Scanner(System.in);
double lat1 = 0;
double long1 = 0;
double lat2 = 0;
double long2 = 0;
double lat3 = 0;
double long3 = 0;
double lat4 = 0;
double long4 = 0;
double lat5 = 0;
double long5 = 0;
double lat6 = 0;
double long6 = 0;
double lat7 = 0;
double long7 = 0;
double lat8 = 0;
double long8 = 0;
double lat9 = 0;
double long9 = 0;
double lat10 = 0;
double long10 = 0;
int yesorno = 1;
double north = 0;
double south = 0;
double east = 0;
double west = 0;
int correct1 = 1;
int correct2 = 1;
int correct3 = 1;
int correct4 = 1;
int correct5 = 1;
int correct6 = 1;
int correct7 = 1;
int correct8 = 1;
int correct9 = 1;
int correct10 = 1;
//Run 1
if (yesorno == 1) {
System.out.println("Please enter the latitide:");
lat1 = scan.nextDouble();
System.out.println("Please enter the longitude");
long1 = scan.nextDouble();
if (long1 >= 180 || long1 <= -180)
System.out.println("Incorrect Latitude or Longitude");
correct1 = 0;
if (lat1 >= 90 || lat1 <= -90)
System.out.println("Incorrect Latitude or Longitude");
correct1 = 0;
//Testing for the biggest north south east and west
if (long1 > north)
north = long1;
if (long1 < south)
south = long1;
if (lat1 > east)
east = lat1;
if (lat1 < west)
west = lat1;
System.out.println("Would you like to enter another location?");
yesorno = scan.nextInt();
}
//Printing the farthest distances
if (yesorno != 1) {
if (correct1 == 1)
System.out.println("Farthest North: " + north);
System.out.println("Farthest South: " + south);
System.out.println("Farthest East: " + east);
System.out.println("Farthest West: " + west);
}
//Run 2
if (yesorno == 1) {
System.out.println("Please enter the latitide:");
lat2 = scan.nextDouble();
System.out.println("Please enter the longitude");
long2 = scan.nextDouble();
if (long2 >= 180 || long2 <= -180)
System.out.println("Incorrect Latitude or Longitude");
correct2 = 0;
if (lat2 >= 90 || lat2 <= -90)
System.out.println("Incorrect Latitude or Longitude");
correct2 = 0;
//Testing for the biggest north south east and west
if (long2 > north)
north = long2;
if (long2 < south)
south = long2;
if (lat2 > east)
east = lat2;
if (lat2 < west)
west = lat2;
System.out.println("Would you like to enter another location?");
yesorno = scan.nextInt();
}
//Printing the farthest distances
if (yesorno != 1) {
if (correct2 == 1)
System.out.println("Farthest North: " + north);
System.out.println("Farthest South: " + south);
System.out.println("Farthest East: " + east);
System.out.println("Farthest West: " + west);
}
//Run 3
if (yesorno == 1) {
System.out.println("Please enter the latitide:");
lat3 = scan.nextDouble();
System.out.println("Please enter the longitude");
long3 = scan.nextDouble();
if (long3 >= 180 || long3 <= -180)
System.out.println("Incorrect Latitude or Longitude");
correct3 = 0;
if (lat3 >= 90 || lat3 <= -90)
System.out.println("Incorrect Latitude or Longitude");
correct3 = 0;
//Testing for the biggest north south east and west
if (long3 > north)
north = long3;
if (long3 < south)
south = long3;
if (lat1 > east)
east = lat3;
if (lat1 < west)
west = lat3;
System.out.println("Would you like to enter another location?");
yesorno = scan.nextInt();
}
//Printing the farthest distances
if (yesorno != 1) {
if (correct3 == 1)
System.out.println("Farthest North: " + north);
System.out.println("Farthest South: " + south);
System.out.println("Farthest East: " + east);
System.out.println("Farthest West: " + west);
}
//Run 4
if (yesorno == 1) {
System.out.println("Please enter the latitide:");
lat4 = scan.nextDouble();
System.out.println("Please enter the longitude");
long4 = scan.nextDouble();
if (long4 >= 180 || long4 <= -180)
System.out.println("Incorrect Latitude or Longitude");
correct4 = 0;
if (lat4 >= 90 || lat4 <= -90)
System.out.println("Incorrect Latitude or Longitude");
correct4 = 0;
//Testing for the biggest north south east and west
if (long4 > north)
north = long4;
if (long4 < south)
south = long4;
if (lat4 > east)
east = lat4;
if (lat4 < west)
west = lat4;
System.out.println("Would you like to enter another location?");
yesorno = scan.nextInt();
}
//Printing the farthest distances
if (yesorno != 1) {
if (correct4 == 1)
System.out.println("Farthest North: " + north);
System.out.println("Farthest South: " + south);
System.out.println("Farthest East: " + east);
System.out.println("Farthest West: " + west);
}
//Run 5
if (yesorno == 1) {
System.out.println("Please enter the latitide:");
lat5 = scan.nextDouble();
System.out.println("Please enter the longitude");
long5 = scan.nextDouble();
if (long5 >= 180 || long5 >= -180)
System.out.println("Incorrect Latitude or Longitude");
correct5 = 0;
if (lat5 >= 90 || lat5 <= -90)
System.out.println("Incorrect Latitude or Longitude");
correct5 = 0;
//Testing for the biggest north south east and west
if (long5 > north)
north = long5;
if (long5 < south)
south = long5;
if (lat5 > east)
east = lat5;
if (lat5 < west)
west = lat5;
System.out.println("Would you like to enter another location?");
yesorno = scan.nextInt();
}
//Printing the farthest distances
//Printing the farthest distances
if (yesorno != 1) {
if (correct5 == 1)
System.out.println("Farthest North: " + north);
System.out.println("Farthest South: " + south);
System.out.println("Farthest East: " + east);
System.out.println("Farthest West: " + west);
}
//Run 6
if (yesorno == 1) {
System.out.println("Please enter the latitide:");
lat6 = scan.nextDouble();
System.out.println("Please enter the longitude");
long6 = scan.nextDouble();
if (long6 >= 180 || long6 <= -180)
System.out.println("Incorrect Latitude or Longitude");
correct6 = 0;
if (lat6 >= 90 || lat6 <= -90)
System.out.println("Incorrect Latitude or Longitude");
correct6 = 0;
//Testing for the biggest north south east and west
if (long6 > north)
north = long6;
if (long6 < south)
south = long6;
if (lat6 > east)
east = lat6;
if (lat6 < west)
west = lat6;
System.out.println("Would you like to enter another location?");
yesorno = scan.nextInt();
}
//Printing the farthest distances
if (yesorno != 1) {
if (correct6 == 1)
System.out.println("Farthest North: " + north);
System.out.println("Farthest South: " + south);
System.out.println("Farthest East: " + east);
System.out.println("Farthest West: " + west);
}
}
}
答案 0 :(得分：0)
你对＃34的回答是什么？你想进入另一个地方吗？ ？ 扫描仪正在等待int＆＃34; nexInt（）＆＃34;，你可能输入了一个角色？
答案 1 :(得分：0)
两种可能性：
您需要很长时间才能使用scan.nextDouble（）。尝试：
long1 = scan.nextLong();
scan.nextLine();
您输入
的整数scan.nextDouble();