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Thread: infinite maze issue

  1. #1
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    Exclamation infinite maze issue

    So I'm trying to make an infinite maze for my beginner Java class, where the while loop will keep the user stuck until the 'secret word' is entered.
    The only issue I am having is that it is procession with exit code 1.

    Not sure what to do. I will post my code and the output, hopefully to get some help. I've tried mixing up the operator in the while loop and nothing seems to work. Please help. Thank you.

    Code:


    import javax.swing.JOptionPane;

    public class infinite
    {
    public static void main(String[] args)
    {
    int number = 0;
    String north = "You're in an abandoned warehouse. Choose a new direction.";
    String south = "You're in a burning building! Choose a new direction.";
    String east = "You fell in a pit of snakes! Choose a new direction.";
    String west = "You're in a sticky, smelly swamp. Choose a new direction.";
    String escape = "escape";
    String choose = "Choose a direction: North, South, East or West.";
    String wrong = "Thats not a correct direction.";
    String input;

    input = JOptionPane.showInputDialog(choose);

    while (input != escape)
    {
    if (input.equalsIgnoreCase("north"))
    {
    JOptionPane.showInputDialog(north + choose);
    number++;
    }
    else if (input.equalsIgnoreCase("south"))
    {
    JOptionPane.showInputDialog(south + choose);
    number++;
    }
    else if (input.equalsIgnoreCase("east"))
    {
    JOptionPane.showInputDialog(east + choose);
    number++;
    }
    else if (input.equalsIgnoreCase("west"))
    {
    JOptionPane.showInputDialog(west + choose);
    number++;
    }
    else
    {
    JOptionPane.showInputDialog(wrong + choose);
    number++;
    }
    }

    JOptionPane.showMessageDialog(null, "Congratulations! You've escaped with the secret word!");
    JOptionPane.showMessageDialog(null, "It took you " + number + " tries to escape the maze.");

    System.exit(0);

    }
    }


    Output Error:

    /Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/bin/java -Didea.launcher.port=7533 "-Didea.launcher.bin.path=/Applications/IntelliJ IDEA 12 CE.app/bin" -Dfile.encoding=UTF-8 -classpath "/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/lib/ant-javafx.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/lib/dt.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/lib/javafx-doclet.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/lib/javafx-mx.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/lib/jconsole.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/lib/sa-jdi.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/lib/tools.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/jre/lib/deploy.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/jre/lib/htmlconverter.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/jre/lib/javaws.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/jre/lib/jfxrt.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/jre/lib/JObjC.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/jre/lib/management-agent.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/jre/lib/plugin.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/jre/lib/resources.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/jre/lib/rt.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/jre/lib/ext/dnsns.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/jre/lib/ext/localedata.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/jre/lib/ext/sunec.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/jre/lib/ext/sunjce_provider.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/jre/lib/ext/sunpkcs11.jar:/Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents/Home/jre/lib/ext/zipfs.jar:/Users/Mike/Desktop/CIS 1500/infiniteMaze/out/production/infiniteMaze:/Applications/IntelliJ IDEA 12 CE.app/lib/idea_rt.jar" com.intellij.rt.execution.application.AppMain Destination
    Exception in thread "main" java.lang.ClassNotFoundException: Destination
    at java.net.URLClassLoader$1.run(URLClassLoader.java: 366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java: 355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.j ava:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:4 24)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launche r.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:3 57)
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:190)
    at com.intellij.rt.execution.application.AppMain.main (AppMain.java:113)

    Process finished with exit code 1

    again, Thank you in advanced for any help.


  2. #2
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    Default Re: infinite maze issue

    Do not compare String objects using ==, !=, <=, <, >, . . . etc. Use the equals() method.

  3. #3
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    Default Re: infinite maze issue

    I have removed the operand and replaced it with a boolean flag to make it easier and i'm still getting the same error. Here is my updated code:


    import javax.swing.JOptionPane;

    public class infinite
    {
    public static void main(String[] args)
    {
    int number = 0;
    String north = "You're in an abandoned warehouse.";
    String south = "You're in a burning building!";
    String east = "You fell in a pit of snakes!";
    String west = "You're in a sticky, smelly swamp.";
    String choose = "Choose a direction: North, South, East or West.";
    String wrong = "Thats not a correct direction.";
    String input;
    boolean getout = false;

    while (getout == false)
    {
    input = JOptionPane.showInputDialog(choose);

    if (input.equalsIgnoreCase("escape"))
    {
    getout = true;
    number++;
    }
    else if (input.equalsIgnoreCase("north"))
    {
    JOptionPane.showMessageDialog(null, north);
    number++;
    }
    else if (input.equalsIgnoreCase("south"))
    {
    JOptionPane.showMessageDialog(null, south);
    number++;
    }
    else if (input.equalsIgnoreCase("east"))
    {
    JOptionPane.showMessageDialog(null, east);
    number++;
    }
    else if (input.equalsIgnoreCase("west"))
    {
    JOptionPane.showMessageDialog(null, west);
    number++;
    }
    else
    {
    JOptionPane.showMessageDialog(null, wrong);
    number++;
    }
    }

    JOptionPane.showMessageDialog(null, "Congratulations! You've escaped with the secret word!");
    JOptionPane.showMessageDialog(null, "It took you " + number + " tries to escape the maze.");

    System.exit(0);

    }
    }

  4. #4
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    Default Re: infinite maze issue

    Post your code in code tags.

    Your program seems to work fine here. I suspect you're having a development environment, IDE, or IDE setup problem.

  5. #5
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    Default Re: infinite maze issue

    ok, i copy and pasted the code in a new project and it ran fine. Thanks again!

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