Help with a simple Java program

I'm making a sort of very simple quiz program with Java. I've got everything working on the input/output side of things, and I'm looking to just fancy everything up a little bit. This program is extremely simple, and is just being run through the Windows command prompt. I was wondering how exactly to go about making it to where the quiz taker was forced to hit the enter key after answering the question and getting feedback. Right now, once the question is answered the next question is immediately asked, and it looks kind of tacky. Thanks in advance for your help.

Hmm.. thats not quite what I was looking for, I don't think. Here's an example of my program.
class P1 {
public static void main(String args[]) {
boolean Correct;
char Selection;
int number;
Correct = false;
System.out.println("Welcome to Trivia!\n");
System.out.println("Who was the first UF to win the Heisman Trophy?\n");
System.out.print("A) Danny Wuerffel\nB) Steve Spurrier\nC) Emmit Smith\n");
Selection = UserInput.readChar();
if(Selection == 'B' | Selection == 'b')
Correct = true;
if(Correct == true)
System.out.println("\nYou have entered the correct response.");
else
System.out.println("\nYou missed it, better luck next time.");
System.out.println("(\nHit enter for the next question...");
System.in.readLine();
Correct = false;
System.out.println("\nWhat year did UF win the NCAA Football National Championship?\n");
number = UserInput.readInt();
if(number == 1996)
Correct = true;
if(Correct == true)
System.out.println("\nYou have entered the correct response.");
else
System.out.println("\nYou missed it, better luck next time.");
Correct = false;
System.out.println("\nWho is the President of the University of Florida?\n");
System.out.println("A) Bernie Machen\nB) John Lombardi\nC) Stephen C. O'Connell\n");
Selection = UserInput.readChar();
if(Selection == 'A' | Selection == 'a')
Correct = true;
if(Correct == true)
System.out.println("\nYou have entered the correct response.");
else
System.out.println("\nYou missed it, better luck next time.");
}

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    FindPollApp.java:18: <identifier> expected
    ^
    2 errors
    Thanks.

    I'm a complete novice with Java. I want to write a
    Java program to run on Windows 2000 servers to write
    a list of certain files in a directory into a *.txt
    file. I hope to add complexity once I have this
    basic part working. Here's the code I have so far:
    //this Java application finds poll* files
    public class FindPollApp
    //Create File Object
    File dir = new File("d:/jda/windss/poll");
    //List directory
    if(dir.isDirectory())
    String[] dirContents = dir.list();
    for (int i=0; i < dirContents.length; i++)
    System.out.println(dirContents);
    //Iterate through files
    I get the following errors:
    C:\JAVA>javac FindPollApp.java
    FindPollApp.java:9: illegal start of type
    if(dir.isDirectory())
    ^
    FindPollApp.java:18: <identifier> expected
    ^
    2 errors
    Thanks.
    You need to create a method and insert your if statement in there

  • Need help with a simple program (should be simple anyway)

    I'm (starting to begin) writing a nice simple program that should be easy however I'm stuck on how to make the "New" button in the file menu clear all the fields. Any help? I'll attach the code below.
    ====================================================
    import java.awt.*;
    import java.awt.event.*;
    import javax.swing.*;
    public class Message extends JFrame implements ActionListener {
         public void actionPerformed(ActionEvent evt) {
         text1.setText(" ");
         text2.setText("RE: ");
         text3.setText(" ");
         public Message() {
         super("Write a Message - by Kieran Hannigan");
         setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         setSize(370,270);
         FlowLayout flo = new FlowLayout(FlowLayout.RIGHT);
         setLayout(flo);
         //Make the bar
         JMenuBar bar = new JMenuBar();
         //Make "File" on Menu
         JMenu File = new JMenu("File");
         JMenuItem f1 = new JMenuItem("New");f1.addActionListener(this);
         JMenuItem f2 = new JMenuItem("Open");
         JMenuItem f3 = new JMenuItem("Save");
         JMenuItem f4 = new JMenuItem("Save As");
         JMenuItem f5 = new JMenuItem("Exit");
         File.add(f1);
         File.add(f2);
         File.add(f3);
         File.add(f4);
         File.add(f5);
         bar.add(File);
         //Make "Edit" on menu
         JMenu Edit = new JMenu("Edit");
         JMenuItem e1 = new JMenuItem("Cut");
         JMenuItem e2 = new JMenuItem("Paste");
         JMenuItem e3 = new JMenuItem("Copy");
         JMenuItem e4 = new JMenuItem("Repeat");
         JMenuItem e5 = new JMenuItem("Undo");
         Edit.add(e5);
         Edit.add(e4);
         Edit.add(e1);
         Edit.add(e3);
         Edit.add(e2);
         bar.add(Edit);
         //Make "View" on menu
         JMenu View = new JMenu("View");
         JMenuItem v1 = new JMenuItem("Bold");
         JMenuItem v2 = new JMenuItem("Italic");
         JMenuItem v3 = new JMenuItem("Normal");
         JMenuItem v4 = new JMenuItem("Bold-Italic");
         View.add(v1);
         View.add(v2);
         View.add(v3);
         View.addSeparator();
         View.add(v4);
         bar.add(View);
         //Make "Help" on menu
         JMenu Help = new JMenu("Help");
         JMenuItem h1 = new JMenuItem("Help Online");
         JMenuItem h2 = new JMenuItem("E-mail Programmer");
         Help.add(h1);
         Help.add(h2);
         bar.add(Help);
         setJMenuBar(bar);
         //Make Contents of window.
         //Make "Subject" text field
         JPanel row2 = new JPanel();
         JLabel sublabel = new JLabel("Subject:");
         row2.add(sublabel);
         JTextField text2 = new JTextField("RE:",24);
         row2.add(text2);
         //Make "To" text field
         JPanel row1 = new JPanel();
         JLabel tolabel = new JLabel("To:");
         row1.add(tolabel);
         JTextField text1 = new JTextField(24);
         row1.add(text1);
         //Make "Message" text area
         JPanel row3 = new JPanel();
         JLabel Meslabel = new JLabel("Message:");
         row3.add(Meslabel);
         JTextArea text3 = new JTextArea(6,22);
         messagearea.setLineWrap(true);
         messagearea.setWrapStyleWord(true);
         JScrollPane scroll = new JScrollPane(text3,
                                  JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,
                                  JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
         //SpaceLine
         JPanel spaceline = new JPanel();
         JLabel spacer = new JLabel(" ");
         spaceline.add(spacer);
         row3.add(scroll);
         add(row1);
         add(row2);
         add(spaceline);
         add(spaceline);
         add(row3);
         setVisible(true);
         public static void main(String[] arguments) {
         Message Message = new Message();
    }

    persiandude wrote:
    Topic: Need help with if, else, and which statements and loops.
    How would I display 60 < temp. <= 85 in java
    System.out.println("60 < temp. <= 85 in java");
    another question is how do I ask a question like want to try again (y/n) after a output and asking that everytime I type in yes after a output and terminate when saying No.Sun's [basic Java tutorial|http://java.sun.com/docs/books/tutorial/]
    Sun's [New To Java Center|http://java.sun.com/learning/new2java/index.html].Includes an overview of what Java is, instructions for setting up Java, an intro to programming (that includes links to the above tutorial or to parts of it), quizzes, a list of resources, and info on certification and courses.
    [http://javaalmanac.com|http://javaalmanac.com]. A couple dozen code examples that supplement [The Java Developers Almanac|http://www.amazon.com/exec/obidos/tg/detail/-/0201752808?v=glance].
    jGuru. A general Java resource site. Includes FAQs, forums, courses, more.
    JavaRanch. To quote the tagline on their homepage: "a friendly place for Java greenhorns." FAQs, forums (moderated, I believe), sample code, all kinds of goodies for newbies. From what I've heard, they live up to the "friendly" claim.
    Bruce Eckel's [Thinking in Java|http://mindview.net/Books/DownloadSites] (Available online.)
    Joshua Bloch's [Effective Java|http://www.amazon.com/Effective-Java-2nd-Joshua-Bloch/dp/0321356683/ref=pd_bbs_1?ie=UTF8&s=books&qid=1214349768&sr=8-1]
    Bert Bates and Kathy Sierra's [Head First Java|http://www.amazon.com/exec/obidos/tg/detail/-/0596004656?v=glance].
    James Gosling's [The Java Programming Language|http://www.bookpool.com/sm/0321349806].

  • Help with a simple program.

    I need some help writing a simple program. Can anybody help??
    thanks to all.
    2. HTML Java Source Code Reserved Word Highlighter
    Write a program that inputs a Java source code file and outputs a copy of that file with Java keywords surrounded with HTML tags for bold type. For example this input:
    public class JavaSource
    public static void main ( String[] args )
    if ( args.length == 3 )
    new BigObject();
    else
    System.out.println("Too few arguments.");
    will be transformed into:
    <B>public</B> <B>class</B> JavaSource
    <B>public</B> <B>static</B> <B>void</B> main ( String[] args )
    <B>if</B> ( args.length == 3 )
    <B>new</B> BigObject();
    <B>else</B>
    System.out.println("Too few arguments.");
    In a browser the code will look like this:
    public class JavaSource
    public static void main ( String[] args )
    if ( args.length == 3 )
    new BigObject();
    else
    System.out.println("Too few arguments.");

    Here is something that may get you started...
    import java.io.*; 
    import java.util.*; 
    public class HtmlJava{
         public static void main(String arg[]){
              if(arg.length!=1){
                   System.out.println("Usage java HtmlJava sourceFile");       
              else
                   new HtmlJava(arg[0]);
         HtmlJava(String source){
              try{
                   BufferedReader sourceReader=new BufferedReader(new InputStreamReader(new FileInputStream(source)));
                   BufferedWriter writer=new BufferedWriter(new OutputStreamWriter(new FileOutputStream(source+"Html.txt")));  
                   Vector keywords=new Vector();
                   addKeywords(keywords);
                   String line;
                   StringTokenizer tokenizer=null;
                   String word;
                   while((line=sourceReader.readLine () )!=null){
                        tokenizer=new StringTokenizer(line);
                        while(tokenizer.hasMoreTokens()){
                             word=tokenizer.nextToken();
                             if(keywords.contains(word)){
                                  writer.write(""+word+" ");
                             else{
                                  writer.write(word+" ");
                        writer.write("\r\n");
                   writer.close();
                   sourceReader.close(); 
                   System.out.println("Output File written to "+source+"Html.txt"); 
              catch(Exception ex){
                   ex.printStackTrace();      
         private void addKeywords(Vector keywords){
              keywords.addElement ( "abstract");
              keywords.addElement( "boolean");
              keywords.addElement( "break");
              keywords.addElement( "byte");
              keywords.addElement( "byvalue");
              keywords.addElement( "case");
              keywords.addElement( "cast");
              keywords.addElement( "catch");
              keywords.addElement( "char");
              keywords.addElement( "class");
              keywords.addElement( "const");
              keywords.addElement( "continue");
              keywords.addElement( "default");
              keywords.addElement( "do");
              keywords.addElement( "double");
              keywords.addElement( "else");
              keywords.addElement( "extends");
              keywords.addElement( "false");
              keywords.addElement( "final");
              keywords.addElement( "finally");
              keywords.addElement( "float");
              keywords.addElement( "for");
              keywords.addElement( "future");
              keywords.addElement( "generic");
              keywords.addElement( "goto");
              keywords.addElement( "if");
              keywords.addElement( "implements");
              keywords.addElement( "import");
              keywords.addElement( "inner");
              keywords.addElement( "instanceof");
              keywords.addElement( "int");
              keywords.addElement( "interface");
              keywords.addElement( "long");
              keywords.addElement( "native");
              keywords.addElement( "new");
              keywords.addElement( "null");
              keywords.addElement( "operator");
              keywords.addElement( "outer");
              keywords.addElement( "package");
              keywords.addElement( "private");
              keywords.addElement( "protected");
              keywords.addElement( "public");
              keywords.addElement( "rest");
              keywords.addElement( "return");
              keywords.addElement( "short");
              keywords.addElement( "static");
              keywords.addElement( "super");
              keywords.addElement( "switch");
              keywords.addElement( "synchronized");
              keywords.addElement( "this");
              keywords.addElement( "throw");
              keywords.addElement( "throws");
              keywords.addElement( "transient");
              keywords.addElement( "true");
              keywords.addElement( "try");
              keywords.addElement( "var");
              keywords.addElement( "void");
              keywords.addElement( "volatile");
              keywords.addElement( "while");
    }Hope it helped

  • I did write a simple java program but it is not working please help me.....

    This is the program I wrote LineRect just to draw a line a rectangle etc...... Y it is not working How can i used the same program to run without using applet that is by using awt and swing.........Pls Help me.............
    import java.awt.*;
    import java.io.*;
    public class LineRect
    {public void paint(Graphics g)
         {g.drawLine(10,10, 50,50);
         g.drawRect(10, 60, 40,30);
         g.fillRect(60,10,30,80);
         g.drawRoundRect(10,100,80,50,10,10);
         g.fillRoundRect(20,110,60,30,5,5);
         g.drawLine(100,10,230,140);
         g.drawLine(100,140,230,10);
    <APPLET
    CODE =LineRect.class
    WIDTH=250
    HEIGHT=200>
    </APPLET>

    There are many significant errors here for instance you are using a class file as if it were an applet yet you do not subclass applet. Your code has no init method (if it is to be an applet). Your best bet is to go through the tutorials one step at a time. One thing to consider is to subclass a JPanel and draw on the jpanel overriding the paintComponent method. This can then be added to a JFrame or a JApplet's contentPane and would allow the same graphics in both. But again, please study the tutorials on all of this, otherwise you will be doing hit-or-miss programming, and that is no way to learn.
    Much luck!
    Addendum: Also, if you are just beginning in Java programming, I suggest you start with the basics and not with Swing / AWT / graphics programming. Otherwise you will just end up bruised and disappointed. You have to learn to walk before you can run.
    Edited by: Encephalopathic on Dec 26, 2007 5:09 AM

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