Need Help w/ Java Applet Program
Hello, first time on fourms. I've taken one year of Java(Poorly instructed) and I am currently trying to build a simple program, my brother is a really good gymnast so the object of this program is two drop down menus with selections, and based on the selections, an output. It has been a while since i've done anything, i've looked for reference at old work i've done and I just have gotten lost, I just need a few pointers. I'm also having compile problems such as, "Cannot find symbol", it is frustrating me, any help would be greatly appreciated!
Here is what i've got so far, based on the above "requirements" can anyone help me out? PS. The odd names I gave them are based on another similar program I wrote a while back. Thanks again!
import javax.swing.*;
import javax.swing.border.*;
import java.awt.*;
import java.awt.event.*;
import java.lang.*;
public class gymnastics extends JFrame
private JComboBox equationTypeComboBox;
private JComboBox equationTypeComboBox2;
private JTextField answerTextField;
public gymnastics()
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setUpInfoPanel();
setUpInfoPanel2();
setUpEquationPanel();
setSize(300,340);
answerTextField.requestFocus();
private void setUpInfoPanel()
JPanel infoPanel = new JPanel();
infoPanel.setLayout(new BoxLayout(infoPanel, BoxLayout.Y_AXIS));
JPanel typePanel = new JPanel();
typePanel.add(new JLabel("Event type: "));
equationTypeComboBox = new JComboBox("Floor", "Pommel", "Vault", "Rings", "PBars", "High Bar");
typePanel.add(equationTypeComboBox);
infoPanel.add(typePanel);
getContentPane().add(infoPanel, BorderLayout.NORTH);
private void setUpInfoPanel2()
JPanel infoPanel2 = new JPanel();
infoPanel2.setLayout(new BoxLayout(infoPanel2, BoxLayout.Y_AXIS));
JPanel typePanel = new JPanel();
typePanel2.add(new JLabel("Group Code: "));
equationTypeComboBox2 = new JComboBox("I","II","III","IV","V");
typePanel.add(equationTypeComboBox2);
infoPanel.add(typePanel);
getContentPane().add(infoPanel2, BorderLayout.CENTER);
public void setUpEquationPanel();
equationPanel.add(new JLabel("Output: "));
answerTextField = new JTextField();
answerTextField = ("Test Output");
equationPanel.add(answerTextField);
getContentPane().add(equationPanel, BorderLayout.SOUTH);
public static void main(String args[])
new gymnastics().setVisible(true);
}
Sorry about the code problem and thanks for the encouragement, it is just a bit frustrating at times.
import javax.swing.*;
import javax.swing.border.*;
import java.awt.*;
import java.awt.event.*;
import java.lang.*;
public class gymnastics extends JFrame
private JComboBox equationTypeComboBox;
private JComboBox equationTypeComboBox2;
private JTextField answerTextField;
public gymnastics()
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setUpInfoPanel();
setUpInfoPanel2();
setUpEquationPanel();
setSize(300,340);
answerTextField.requestFocus();
private void setUpInfoPanel()
JPanel infoPanel = new JPanel();
infoPanel.setLayout(new BoxLayout(infoPanel, BoxLayout.Y_AXIS));
JPanel typePanel = new JPanel();
typePanel.add(new JLabel("Event type: "));
equationTypeComboBox = new JComboBox("Floor", "Pommel", "Vault", "Rings", "PBars", "High Bar");
typePanel.add(equationTypeComboBox);
infoPanel.add(typePanel);
getContentPane().add(infoPanel, BorderLayout.NORTH);
private void setUpInfoPanel2()
JPanel infoPanel2 = new JPanel();
infoPanel2.setLayout(new BoxLayout(infoPanel2, BoxLayout.Y_AXIS));
JPanel typePanel = new JPanel();
typePanel2.add(new JLabel("Group Code: "));
equationTypeComboBox2 = new JComboBox("I","II","III","IV","V");
typePanel.add(equationTypeComboBox2);
infoPanel.add(typePanel);
getContentPane().add(infoPanel2, BorderLayout.CENTER);
public void setUpEquationPanel();
equationPanel.add(new JLabel("Output: "));
answerTextField = new JTextField();
answerTextField = ("Test Output");
equationPanel.add(answerTextField);
getContentPane().add(equationPanel, BorderLayout.SOUTH);
public static void main(String args[])
new gymnastics().setVisible(true);
}
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/* Fig. 3.6: WelcomeApplet.java
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/*************************yanhua.java******************************
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import java.applet.AudioClip;
import java.awt.*;
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private int m_mouseY;
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Thread runner;
int pix0[];
MemoryImageSource offImage;
Image dbImg;
int pixls;
int pixls2;
Random rand;
int bits;
double bit_px[];
double bit_py[];
double bit_vx[];
double bit_vy[];
int bit_sx[];
int bit_sy[];
int bit_l[];
int bit_f[];
int bit_p[];
int bit_c[];
int bit_max;
int bit_sound;
int ru;
int rv;
AudioClip sound1;
AudioClip sound2;
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m_mouseX = 0;
m_mouseY = 0;
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rand = new Random();
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bit_px = new double[bits];
bit_py = new double[bits];
bit_vx = new double[bits];
bit_vy = new double[bits];
bit_sx = new int[bits];
bit_sy = new int[bits];
bit_l = new int[bits];
bit_f = new int[bits];
bit_p = new int[bits];
bit_c = new int[bits];
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rv = 50;
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s = getParameter("para_blendy");
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try
Thread.sleep(200L);
catch(InterruptedException interruptedexception) { }
do
for(int j = 0; j < pixls2; j++)
int k = pix0[j];
int l = pix0[j + 1];
int i1 = pix0[j + m_nAppX];
int j1 = pix0[j + m_nAppX + 1];
int i = (k & 0xff0000) >> 16;
int k1 = ((((l & 0xff0000) >> 16) - i) * ru >> 8) + i;
i = (k & 0xff00) >> 8;
int l1 = ((((l & 0xff00) >> 8) - i) * ru >> 8) + i;
i = k & 0xff;
int i2 = (((l & 0xff) - i) * ru >> 8) + i;
i = (i1 & 0xff0000) >> 16;
int j2 = ((((j1 & 0xff0000) >> 16) - i) * ru >> 8) + i;
i = (i1 & 0xff00) >> 8;
int k2 = ((((j1 & 0xff00) >> 8) - i) * ru >> 8) + i;
i = i1 & 0xff;
int l2 = (((j1 & 0xff) - i) * ru >> 8) + i;
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int j3 = ((k2 - l1) * rv >> 8) + l1;
int k3 = ((l2 - i2) * rv >> 8) + i2;
pix0[j] = i3 << 16 | j3 << 8 | k3 | 0xff000000;
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offImage.newPixels(0, 0, m_nAppX, m_nAppY);
try
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catch(InterruptedException interruptedexception1) { }
} while(true);
public void update(Graphics g)
paint(g);
public void paint(Graphics g)
g.drawImage(dbImg, 0, 0, this);
public void start()
if(isError)
return;
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if(runner == null)
runner = new Thread(this);
runner.start();
public void stop()
if(runner != null)
runner.stop();
runner = null;
public boolean mouseMove(Event event, int i, int j)
m_mouseX = i;
m_mouseY = j;
return true;
public boolean mouseDown(Event event, int i, int j)
m_mouseX = i;
m_mouseY = j;
int k = (int)(rand.nextDouble() * 256D);
int l = (int)(rand.nextDouble() * 256D);
int i1 = (int)(rand.nextDouble() * 256D);
int j1 = k << 16 | l << 8 | i1 | 0xff000000;
int k1 = 0;
for(int l1 = 0; l1 < bits; l1++)
if(bit_f[l1] != 0)
continue;
bit_px[l1] = m_mouseX;
bit_py[l1] = m_mouseY;
double d = rand.nextDouble() * 6.2800000000000002D;
double d1 = rand.nextDouble();
bit_vx[l1] = Math.sin(d) * d1;
bit_vy[l1] = Math.cos(d) * d1;
bit_l[l1] = (int)(rand.nextDouble() * 100D) + 100;
bit_p[l1] = (int)(rand.nextDouble() * 3D);
bit_c[l1] = j1;
bit_sx[l1] = m_mouseX;
bit_sy[l1] = m_nAppY - 5;
bit_f[l1] = 2;
if(++k1 == bit_max)
break;
if(bit_sound > 1)
sound2.play();
return true;
public boolean mouseExit(Event event, int i, int j)
m_mouseX = i;
m_mouseY = j;
return true;
void rend()
boolean flag = false;
boolean flag1 = false;
boolean flag2 = false;
for(int k = 0; k < bits; k++)
switch(bit_f[k])
default:
break;
case 1: // '\001'
bit_vy[k] += rand.nextDouble() / 50D;
bit_px[k] += bit_vx[k];
bit_py[k] += bit_vy[k];
bit_l[k]--;
if(bit_l[k] == 0 || bit_px[k] < 0.0D || bit_py[k] < 0.0D || bit_px[k] > (double)m_nAppX || bit_py[k] > (double)(m_nAppY - 3))
bit_c[k] = 0xff000000;
bit_f[k] = 0;
} else
if(bit_p[k] == 0)
if((int)(rand.nextDouble() * 2D) == 0)
bit_set((int)bit_px[k], (int)bit_py[k], -1);
} else
bit_set((int)bit_px[k], (int)bit_py[k], bit_c[k]);
break;
case 2: // '\002'
bit_sy[k] -= 5;
if((double)bit_sy[k] <= bit_py[k])
bit_f[k] = 1;
flag2 = true;
if((int)(rand.nextDouble() * 20D) == 0)
int i = (int)(rand.nextDouble() * 2D);
int j = (int)(rand.nextDouble() * 5D);
bit_set(bit_sx[k] + i, bit_sy[k] + j, -1);
break;
if(flag2 && bit_sound > 0)
sound1.play();
void bit_set(int i, int j, int k)
int l = i + j * m_nAppX;
pix0[l] = k;
/*********************************end*******************************no one help me???????????
-
Need help for writing extract program
hi
i need help for writing extract program to retriew data from legacy system.
i already developed bdc programs for me31k and me21.
my requirement is to write extract program s for those t.codes.
to retriew data from legacy system and stored in flat file.i need help with a java program. it is a program that allows the user to enter a student's GPA, number of extracurricular activities, and number of service activities. The user can not enter a gpa above 4.0 or below 0. The user can not enter a negative number for the number of both activities. If the student meets the following criteria: 1) GPA of 3.8 or above and at least one extracurricular activity and one service activity, 2) GPA below 3.8 but at least 3.4 and a total of at least three extracurricular and service activities, 3) GPA below 3.4 but at least 3.0 and at least two extracurricular activities and three service activities, the message "Scholarship candidate" should display. If the student does not meet the criteria above, then the message"not a candidate" should display. Can you help me, please?
You haven't posted ANY 'java program' for us to help with.
The forum is NOT a coding service. It is to help you with YOUR code.
Post the code you have written and SHOW us (don't just tell us) how you compile it and execute it and the results you get. Then we can help you with any problems you are are having.
If you need help understanding just what the program should be doing you need to ask your instructor to clarify the assignment. -
I need help instantly on this program please
import java.util.*;
public class D3
private static int[] z = new int[100000];
private static int first=z[0];
private static int last=z[n-1];
private static int n=100000;
public static void main(String args[])
Scanner input=new Scanner(System.in);
for(int i=0;i<z.length;i++)
z=2*i;
int seqSearch(z;50000;n); //method call 4 key where key=mid
int binSearch(z;first;last;50000);
int seqSearch(z;35467;n); //method call 4 key where key in the left half
int binSearch(z;first;last;35467);
int seqSearch(z;89703;n); //method call 4 key where key in the right half
int binSearch(z;first;last;89703);
public int seqSearch(int z[];int key;int n)
long start = System.currentTimeMillis();
int count=0;
int ans=-1;
for(int i=0;i<n;i++)
if z[i]=key
count++
{ans=i
break;}
return ans;
long elapsed = System.currentTimeMillis() - start;
System.out.print("Execution Time:" + elapsed);
System.out.print("# of Basic Operations:" + count);
public int binSearch(int z[];int first;int last;int key)
long start = System.currentTimeMillis();
int count=0;
if(last<first){
count++;
index=-1;
else
count++;
int mid=(first+last)/2
if(ket=z[mid]{
index=mid;
else
if(key<z[mid]){
index = binSearch(z[];first;mid-1;key);
else
index=binSearch(z[];mid+1;last;key);
return index;
long elapsed = System.currentTimeMillis() - start;
System.out.print("Execution Time:" + elapsed);
System.out.print("# of Basic Operations:" + count);
// if anyone could tell me whats wrong with my code i'd be greatful...the program is supposed to perform binary and sequential search on a sorted array of 100000 numbers.once on an item in the middle of the array once on the right side of it and once on the left side...i also need to count the number of basic operations for the same number in both sequential and binary to see whats better.and i need to check the time...plz i need help now,,,"Guide to a first-time poster"
you need to add exclamation marks to signify how urgent it is
e.g.
i need help instantly on this program please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
capital letters is better
I NEED HELP INSTANTLY ON THIS PROGRAM PLEASE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
starting the italics on line 1, better again
import java.util.*;
public class D3
private static int[] z = new int[100000];
private static int first=z[0];
private static int last=z[n-1];
private static int n=100000;
public static void main(String args[])
Scanner input=new Scanner(System.in);
for(int i=0;i<z.length;i++)
z=2*i;
int seqSearch(z;50000;n); //method call 4 key where key=mid
int binSearch(z;first;last;50000);
int seqSearch(z;35467;n); //method call 4 key where key in the left half
int binSearch(z;first;last;35467);
int seqSearch(z;89703;n); //method call 4 key where key in the right half
int binSearch(z;first;last;89703);
public int seqSearch(int z[];int key;int n)
long start = System.currentTimeMillis();
int count=0;
int ans=-1;
for(int i=0;i<n;i++)
if z=key
count++
{ans=i
break;}
return ans;
long elapsed = System.currentTimeMillis() - start;
System.out.print("Execution Time:" + elapsed);
System.out.print("# of Basic Operations:" + count);
public int binSearch(int z[];int first;int last;int key)
long start = System.currentTimeMillis();
int count=0;
if(last><first){
count++;
index=-1;
else
count++;
int mid=(first+last)/2
if(ket=z[mid]{
index=mid;
else
if(key><z[mid]){
index = binSearch(z[];first;mid-1;key);
else
index=binSearch(z[];mid+1;last;key);
return index;
long elapsed = System.currentTimeMillis() - start;
System.out.print("Execution Time:" + elapsed);
System.out.print("# of Basic Operations:" + count);
and what about the dukes, offer 10 (never to be awarded, of course)
do this, then sit back and watch the replies roll in. -
Need help with Java, have a few questions about my Applet
Purpose of the program: To create a mortgage calculator that will allow the user to input the loan principal then select 1 of 3 choices from a combo-box (7 years @ 5.35%, 15 years @ 5.50%, 30 years @ 5.75%).
Problem: My program was working properly (so I thought). I can get the program to properly compile and run through TextPad. However, I noticed that when the user clicks the calculate more than once (with the same input), it slightly alters the output calculations. So that is my first question, Why is it doing that? How can I get it only calculate that information once unless the user changes it etc?
My next question is regarding my exit button. I was told by my instructor (who has already stated he won't help any of us) that my exit button does not work for an applet and only for an application. So, how can I create an exit button that will work with an applet? I thought I did it right but I can't find any resources online for this.
Next question, why isn't my program properly validating invalid input? My program should only allow numeric input and nothing more.
And last question, when invalid input is entered and the user clicks calculate, why isn't my JOptionPane window for error messages not displaying?
I know my code is a little long so I have to post this in two messages. Please don't criticize me for what I am doing, that is why I am learning and have come to this forum for help. Thanks
import java.applet.Applet;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
import java.text.NumberFormat;
import java.text.DecimalFormat;
// Creating the main class
public class test extends JApplet implements ActionListener
// Defining of format information
JLabel heading = new JLabel("McBride Financial Services Mortgage Calculator");
Font newFontOne = new Font("TimesRoman", Font.BOLD, 20);
Font newFontTwo = new Font("TimesRoman", Font.ITALIC, 16);
Font newFontThree = new Font("TimesRoman", Font.BOLD, 16);
Font newFontFour = new Font("TimesRoman", Font.BOLD, 14);
JButton calculate = new JButton("Calculate");
JButton exitButton = new JButton("Quit");
JButton clearButton = new JButton("Clear");
JLabel instructions = new JLabel("Please Enter the Principal Amount Below");
JLabel instructions2 = new JLabel("and Select a Loan Type from the Menu");
// Declaration of variables
private double principalAmount;
private JLabel principalLabel = new JLabel("Principal Amount");
private NumberFormat principalFormat;
private JTextField enterPrincipal = new JTextField(10);
private double finalPayment;
private JLabel monthlyPaymentLabel = new JLabel(" Monthly Payment \t Interest Paid \t \t Loan Balance");
private NumberFormat finalPaymentFormat;
private JTextField displayMonthlyPayment = new JTextField(10);
private JTextField displayInterestPaid = new JTextField(10);
private JTextField displayBalance = new JTextField(10);
// Creation of the String of arrays for the ComboBox
String [] list = {"7 Years @ 5.35%", "15 Years @ 5.50%", "30 Years @ 5.75%"};
JComboBox selections = new JComboBox(list);
// Creation of the textArea that will display the output
private TextArea txtArea = new TextArea(5, 10);
StringBuffer buff = null;
Edited by: LoveMyAJ on Jan 19, 2009 1:49 AM// Initializing the interface
public void init()
// Creation of the panel design and fonts
JPanel upper = new JPanel(new BorderLayout());
JPanel middle = new JPanel(new BorderLayout());
JPanel lower = new JPanel(new BorderLayout());
JPanel areaOne = new JPanel(new BorderLayout());
JPanel areaTwo = new JPanel(new BorderLayout());
JPanel areaThree = new JPanel(new BorderLayout());
JPanel areaFour = new JPanel(new BorderLayout());
JPanel areaFive = new JPanel(new BorderLayout());
JPanel areaSix = new JPanel(new BorderLayout());
Container con = getContentPane();
getContentPane().add(upper, BorderLayout.NORTH);
getContentPane().add(middle, BorderLayout.CENTER);
getContentPane().add(lower, BorderLayout.SOUTH);
upper.add(areaOne, BorderLayout.NORTH);
middle.add(areaTwo, BorderLayout.NORTH);
middle.add(areaThree, BorderLayout.CENTER);
middle.add(areaFour, BorderLayout.SOUTH);
lower.add(areaFive, BorderLayout.NORTH);
lower.add(areaSix, BorderLayout.SOUTH);
heading.setFont(newFontOne);
instructions.setFont(newFontTwo);
instructions2.setFont(newFontTwo);
principalLabel.setFont(newFontThree);
monthlyPaymentLabel.setFont(newFontFour);
displayInterestPaid.setFont(newFontFour);
displayBalance.setFont(newFontFour);
areaOne.add(heading, BorderLayout.NORTH);
areaOne.add(instructions, BorderLayout.CENTER);
areaOne.add(instructions2, BorderLayout.SOUTH);
areaTwo.add(principalLabel, BorderLayout.WEST);
areaTwo.add(enterPrincipal, BorderLayout.EAST);
areaThree.add(selections, BorderLayout.NORTH);
areaFour.add(calculate, BorderLayout.CENTER);
areaFour.add(exitButton, BorderLayout.EAST);
areaFour.add(clearButton, BorderLayout.WEST);
areaFive.add(monthlyPaymentLabel, BorderLayout.CENTER);
areaSix.add(txtArea, BorderLayout.CENTER);
// Using the ActionListener to determine when each button is clicked
calculate.addActionListener(this);
exitButton.addActionListener(this);
clearButton.addActionListener(this);
enterPrincipal.requestFocus();
selections.addActionListener(this);
// The method that will perform specific actions defined below
public void actionPerformed(ActionEvent e)
Object source = e.getSource();
buff = new StringBuffer();
// Outcome of pressing the calculate button
if (source == calculate)
// Used to call upon the user chosen selection
int selection = selections.getSelectedIndex();
// If statement to call upon Loan One's Method
if (selection == 0)
Double data = (Double)calculateLoanOne();
String sourceInput = data.toString();
displayMonthlyPayment.setText(sourceInput);
txtArea.setText(buff.toString());
// If statement to call upon Loan Two's Method
else if (selection == 1)
Double data = (Double)calculateLoanTwo();
String sourceInput = data.toString();
displayMonthlyPayment.setText(sourceInput);
txtArea.setText(buff.toString());
// If statement to call upon Loan Three's Method
else if (selection == 2)
Double data = (Double)calculateLoanThree();
String sourceInput = data.toString();
displayMonthlyPayment.setText(sourceInput);
txtArea.setText(buff.toString());
// Outcome of pressing the clear button
else if (source == clearButton)
enterPrincipal.setText("");
displayMonthlyPayment.setText("");
selections.setSelectedIndex(0);
txtArea.setText("");
// Outcome of pressing the quit button
else if (source == exitButton)
System.exit(1);
// Method used to validate user input
private static boolean validate(JTextField in)
String inText = in.getText();
char[] charInput = inText.toCharArray();
for(int i = 0; i < charInput.length; i++)
int asciiVal = (int)charInput;
if((asciiVal >= 48 && asciiVal <= 57) || asciiVal == 46)
else
JOptionPane.showMessageDialog(null, "Invalid Character, Please Use Numeric Values Only");
return false;
return true; -
Hi,
I need help with my web application. When i tried to run it using
localhost:8080
it's giving me error that
signup.do file is not available.
can someone tell me what could be wrong with my code?
I want to know what is .do file and what needs to do to have remove the error
I have also used struts config file.
Please help me.
Message was edited by:
star4588See struts documentation here http://struts.apache.org/1.2.9/userGuide/building_controller.html#action_mapping_example
you should have something like that :
<action-mappings>
<action
path="/signup"
type="org.apache.struts.webapp.example.SignupAction"
name="signupForm"
scope="request"
input="/signup.jsp"
unknown="false"
validate="true" />
</action-mappings>in your struts-config.xml.
Hope That Helps -
Is any one tell me that JAVA BEAN only used in WEB or also you in Desktop applications???? and aslo tell how i implement Java class and use JAVA BEAN. I need help regarding above matter
thanks in advance
Rehan MIrzaHere is a good link that indicate that JavaBean is not only for applets
http://java.sun.com/docs/books/tutorial/javabeans/whatis/beanDefinition.html
quote:
The JavaBeans API makes it possible to write component software in the Java programming language. Components are self-contained, reusable software units that can be visually composed into composite components, applets, applications, and servlets using visual application builder tools. JavaBean components are known as Beans.
Francois -
Need help getting my applet to run..
Hi, I am having the utmost trouble getting my applet to run. First I spent a month correcting syntax and other errors generated during compile. Now I find myself spending another month getting the compiled product to run. I don't care if the screen is completely blank and my logic is all messed up, I don't mind logic debugging. My applet just will not run at all, it won't even initialize.
First when I tried to run my applet in Internet Explorer I got the following error in the statusbar:
"load: tsorgi5 can't be instantiated"
So, I researched that error message, and the solution appeared to be that I would need to use the Java Plug-In. So, I use that and now I find this message in the statusbar:
"exception: null."
That happens when the text "Loading Java Applet ..." is in the centre of the applet, and Internet Explorer acts like it is still doing something no matter how long I wait.
I tried researching this, but only found "exception: null" with other things after the text "null."
In Forte, when I choose "Execute" I get the following in the Output Window, I/O tab:
java.lang.NoSuchMethodError: main
Exception in thread "main"
I would assume it expects me to add a method "main()," but I also get that same message with a different applet (which doesn't have a method "main()") which runs perfectly fine.
I usually try to solve many of my problems myself, but with this one I have no idea where to start looking for answers. I'm relatively new to Java, been using Java for only half a year, so this particular problem is like looking for a four-leaf clover in the streets of New York City..
I'm going to be chopping my applet into pieces, having a separate class file for each major engine. (It is a role-playing game, so I'll separate battle engine from cut-scene engine from world exploration engine etc..) Hopefully I will be able to narrow down my search for what is causing me all of these problems. Then once I solve my problems I can piece everything back together.
In the meantime, I am hoping that some of you could help me out so that I may know what I am looking for.
Thank You for your time,
-Tony SlaterAh.. Forte is still a bit confusing to me, I have not and probably will not take the time to learn much about Forte, as the only real reason I use it is because unlike wordpad, I can see line numbers. =] Very helpful with my program being the size that it is.
I do not think that the simple applet idea will be of much use, because one of my earlier applet projects (a main menu for my current project) which I mentioned above as another applet without a main() method which worked perfectly fine is very simple. Although I will try it anyway, as it could help and you are most likely much more experienced than I. =]
Okay, I typed the following in the Dos Prompt:
appletviewer TestApplet.class
..It printed a blank line, paused a little bit, then brought me back to the prompt, just like running a dos program that does not give any output. I'm not sure, but I would assume it should print a line containing the text "Here?" I have not used appletviewer before, so I do not know what it is supposed to do. =P
I have already tried using System.out.println, but the problem occours even before the applet is started. I'll try enabling the Java Console first thing tomorrow morning, since a restart is required when enabling it.
Now, I would be happy to post some code, but I'm not sure it would be best to post the code when my program is 2814 lines.. although 800 lines are probably comments, and most of those comments are probably irrelevant. Also I can sometimes be a messy coder. Although I can post some general information and can probably (with a little work) post an "outline" of the code.
Since it is getting late I'll just post some portions of code which hopefully will prove important.
// Import Packages
import java.awt.Graphics;
import java.awt.Color;
import java.awt.*;
import java.applet.*;
import java.lang.System;
import java.lang.reflect.Array;
import java.lang.Math;
import java.lang.Double;
import java.math.*;
import java.util.Random;
import java.io.*;
variable/object types created and/or declared between "public class.." and "public void init()...":
int
byte[]
String
RandomAccessFile
int[][]
double
int[]
double[][][]
Random
Image
int[][][]
arrays are filled in the init() method.
public String getIniStrValue(String iniFile, String iniGroup, String iniItem) // Used for retrieving information from the game's external file system.
another method getIniIntValue(int, String, String, String) is used for int values stored in external files.
Within public void paint(), gameplay modes are detected and dealt with accordingly. With Cut-Scenes, proper charecter images and text is displayed, all cut-scene information is stored externally. Other modes do virtually the same, display graphics and text based on internal game data or un-changing external data files.
Within public void mouseClick(), in certain modes of the game the mouse click will trigger a change no matter where the user clicked (such as cut-scenes, to advance to the next line of dialog), or different variables are set depending on where the user clicked. (What I like to call.. custom buttons) At the end of the method repaint(); is used, and the paint() method will alter the screen according to any changes that may have happened.
public void charAttack() is a method called to handle battle equations when a playable and controllable charecter is making a move. It will detect the current charecter, detect the move being made by the charecter (attack, special move, magic, etc) and will change any variables accordingly and will then use repaint(); so that the player may know what has happened. (Whether or not attack was successful, how many HP the enemy lost, etc)
public void loadBattle() is called when the charecter encounters an enemy. It will load possible enemies of the current part of the world being explored, select one, then load that enemy's "stats" from external game data files, and will then specify the new mode (Battle Menu, where the player chooses the moves to be made for the turn) by setting the int value "Mode." repaint(); is then called and it will paint the battle menu.
public boolean keyDown() is of course used to detect keyboard events. In world exploration, the charecter will be moved accordingly. In modes such as cut-scenes, a variable will be changed to advance to the next line of speech. In menus, the keyboard events are used to switch between options. repaint(); is used to update the screen accordingly.
Well, even though I very briefly summarized the code, it appears to have taken half an hour to do. I'll be getting some sleep in a few minutes, and when I wake up tomorrow morning I hope to both see and make some progress on solving this problem.
Thank You,
-Tony Slater. -
ok so i have a midterm and need help this question that is gonna be on the midterm. i dont know how to do it and its worth 16 marks!!!! here it is
the UW Orchestra wants to produce a CD containing all the pieces of music
from its upcoming concert. In order to do that, it needs to calculate the total length of time for the
CD. In addition, the conductor wishes to know which piece of music has the longest duration.
Sample output for the program.
The Swan (3.88)
The Bee (0.98)
Claire de Lune (6.02)
Liebesfreund (3.38)
Ragtime (3.48)
The total time for the CD is 18.74 minutes.
The longest piece is Claire de Lune.
Do not include the HTML that is required to embed the program into a Web page (that is, show
only what you would write between <script> and </script> tags).
[4 marks] In the following space, define a function, Print, that takes two parameters, Title and
Length, and outputs a line of text such that Title appears in italics, followed by Length in
parentheses. The function also returns the value of Length.
For example, Print("My World",30) will output the line
My World (30)
and return the value 30.
Put your JavaScript program for the remainder of this question in the space provided on the next
two pages.
[9 marks]. For each piece of music, your program should input the title of the piece and the
duration (in minutes) for that piece, and it should output a line showing those values using the
Print function just defined. After all pieces have been listed, the program should output the
total length of time for the CD, adding in 0.25 minutes between each piece of music (which is
needed on the CD to separate the pieces).
[3 marks] The program should also output the name of the piece that has the longest playing
time.
Use reasonable variable names, indentation and good programming style. Documentation and
comments are not required, but you may add them to explain any assumptions you might want to
make. You need not check that the input is valid, and you may assume that no two pieces have the
same duration.
can anyone help me out! i would be indebt of ur kindness if u can help me out!This forum is for Java, not JavaScript. The two have nothing to do with each other.
And anyway, this is your studying, so you should try to do it, put forth your best effort, and ask specific questions (on the proper fourm).
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