I'm a beginner at coding so apologies if this is a silly question/if I missed any tags. I have written a program that uses an array with 10 cities. The output is to ask the user to enter a city, and the program will tell if the array contains it or not. On lines 22 and 23 I get the error: "cannot find symbol". The lines read:
for(int i = 0; i < citiesInMichigan.length; i++){
if (citiesInMichigan[i].equals(inCity))
If anyone could read over my code and tell me what I'm doing wrong, it would be appreciated. Thanks in advance!
// MichiganCities.cpp - This program prints a message for invalid cities in Michigan.
// Input: Interactive
// Output: Error message or nothing
import javax.swing.*;
public class MichiganCities
{
public static void main(String args[]) throws Exception
{
// Declare variables.
String inCity; // name of city to look up in array.
// Initialized array of cities in Illinois.
String citiesInIllinois[] = {"Acme", "Albion", "Detroit", "Watervliet", "Coloma", "Saginaw", "Richland", "Glenn", "Midland", "Brooklyn"};
boolean foundIt = false; // Flag variable.
int x; // Loop control variable.
// Get user input.
inCity = JOptionPane.showInputDialog("Enter name of city: ");
// Write your loop here.
for(int i = 0; i < citiesInMichigan.length; i++){
if (citiesInMichigan[i].equals(inCity))
foundIt = true;
}
// Write your test statement here to see if there is
// a match. Set the flag to true if city is found.
if (foundIt)
System.out.println("is in Michigan");
else System.out.println("Not a city in Michigan");
// Test to see if city was not found to determine if
// "Not a city in Illinois" message should be printed.
System.exit(0);
}
}
Edit: I keep getting this error:
Line 19: Exception in thread "main" java.awt.AWTError: Can't connect to X11 window server using ':1' as the value of the DISPLAY variable.
at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
at sun.awt.X11GraphicsEnvironment.access$200(X11GraphicsEnvironment.java:65)
at sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java:115)
at java.security.AccessController.doPrivileged(Native Method)
at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:74)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at java.awt.GraphicsEnvironment.createGE(GraphicsEnvironment.java:103)
at
at sun.awt.X11.XToolkit.<clinit>(XToolkit.java:126)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at java.awt.Toolkit$2.run(Toolkit.java:860)
at java.awt.Toolkit$2.run(Toolkit.java:855)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:854)
at javax.swing.UIManager.setLookAndFeel(UIManager.java:539)
at javax.swing.UIManager.setLookAndFeel(UIManager.java:579)
at javax.swing.UIManager.initializeDefaultLAF(UIManager.java:1349)
at javax.swing.UIManager.initialize(UIManager.java:1459)
at javax.swing.UIManager.maybeInitialize(UIManager.java:1426)
at javax.swing.UIManager.getDefaults(UIManager.java:659)
at javax.swing.UIManager.getString(UIManager.java:805)
at javax.swing.UIManager.getString(UIManager.java:822)
at javax.swing.JOptionPane.showInputDialog(JOptionPane.java:474)
at javax.swing.JOptionPane.showInputDialog(JOptionPane.java:440)
at MichiganCities.main(MichiganCities.java:19).
Line 19 reads:
inCity = JOptionPane.showInputDialog("Enter name of city: ");
