Maria Sachhause

Hello,
I have a program where is lots of values(speed in one second) that are depending on angle of heading.

For example I have read ollowing values from a file:

int angle50 = 550;
int angle75 = 435;
int angle110 = 500;
...

So, the question and problem is how to get values between for example angle50 and angle75. So I mean what is for example value of the angle60.
I can solve my problem with using lots of IF:s but code is getting quite long. I know it has something to do with interpolation... but with java? How to do that(simplies way)?

I have a drawing panel where I can draw lines etc.

Program works like this:

1. First mouse click makes start point (coordinates)
2. Second mouse click makes destination point (coordinates)
3. Line is drawn between those points
4. Third click draw a line from it coordinates toward center of jpanel

problem is this....

How to make Jbutton RESET, which set panel empty(as it was when program where started)without restarting.

What is the easiest way to do that?

Hi, few days have passed and new and last problem has risen.

Now I can make this.

step-by-step

1. First mouse press defines start point
2. Second mouse press defines destination point
3. Line is drawn between start and destination points
4. Third mouse press draws a line towards center

I have this coordinates: north is 0 and clockwise 360 degrees

-----------------360/0-------------------
-------------------*---------------------
270************************************90
-------------------*---------------------
-----------------180---------------------


And my problem is this:

-How can I draw a line from the start point towards degree 140 (which is hardcoded to for example to variable int heading=140)???

Thanks again You are really helping me

What if I want that third mouse pressing draws a line from given coordinate to the center?
So, I mean that if I want that first and second mouse press draws a line between those points like now it does but the third press draws a line from its coordinates toward center.

Should I do like this, where windSetLine x and y are global variables which tells where center is (250 and 250).
g.drawLine(x3, y3, Global2.windSetLineX,Global2.windSetLineY );

Thank you, Craig Wood. You helped me a lot

Now I am trying to add one more point. Now if I press mouse twise I get two points(start and destination), but when I try to add third it does not work.

Below is how I try to do it, I don't get it why it doesn't work?

/** * * This is panel for drawing. Must create another class to extending panel so we can override paint method */ class DrawingPanel2 extends JPanel { ///for drawing start to finnish int x1; int y1; int x2; int y2; // Start and end point of line int x3; int y3; ///for crosshair drawing int horizontalX1=0; int horizontalY1=250; int horizontalX2=500; int horizontalY2=250; int verticalX1=250; int verticalY1=0; int verticalX2=250; int verticalY2=500; /** * mouse listener to panel. constructor */ public DrawingPanel2() { MouseListener mouseListener = new DrawingMouseListener2(this); addMouseListener(mouseListener); x1 = this.x1; y1 = this.y1; x2 = this.x2; y2 = this.y2; x3 = this.x3; y3 = this.y3; int horizontalX1=this.horizontalX1; int horizontalY1=this.horizontalY1; int horizontalX2=this.horizontalX2; int horizontalY2=this.horizontalY2; int verticalX1=this.verticalX1; int verticalY1=this.verticalY1; int verticalX2=this.verticalX2; int verticalY2=this.verticalY2; } protected void paintComponent(Graphics g) { super.paintComponent(g); Graphics2D g2 = (Graphics2D)g; g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); g.drawString("Start",x1-8,y1-8); g.drawLine(x1, y1, x2, y2); // Draw the line connecting two points if(Math.abs(x1-x2) > 1 && Math.abs(y1-y2) > 1) g.drawString("Destination",x2,y2); //draws cross hair g.setColor(Color.blue); g.drawLine(horizontalX1,horizontalY1,horizontalX2,horizontalY2); g.drawLine(verticalX1,verticalY1,verticalX2,verticalY2); g.setColor(Color.black); g.setColor(Color.red); g2.drawString("X", (float)Global2.xx, (float)Global2.yy); } /** * First point eli alkupiste */ public void setPoint1(int x, int y) { x1 = x; y1 = y; repaint(); } /** * End point */ public void setPoint2(int x, int y) { x2 = x; y2 = y; repaint(); } public void setPoint3(int x, int y) { x3 = x; y3 = y; } } /** * A mouse listener for a DrawingPanel */ class DrawingMouseListener2 extends MouseAdapter { DrawingPanel2 panel; // The panel to draw on boolean firstPress = true; // True when expecting first mouse press boolean secondPress = false; boolean thirdPress = false; /** * Constructor */ public DrawingMouseListener2(DrawingPanel2 panel) { this.panel = panel; } /* Mouse listeners which set points * */ public void mousePressed(MouseEvent e) { if (firstPress) { panel.setPoint1(e.getX(), e.getY()); panel.setPoint2(e.getX(), e.getY()); panel.setPoint3(e.getX(), e.getY()); Global2.gX1=e.getX(); Global2.gY1=e.getY(); Global2.gX2=e.getX(); Global2.gY2=e.getY(); // Reset animation variables. Global2.secondFromBeginning = 0; Global2.xx = e.getX(); Global2.yy = e.getY(); firstPress = false; } else if(!firstPress) { panel.setPoint2(e.getX(), e.getY()); Global2.gX2=e.getX(); Global2.gY2=e.getY(); firstPress = true; } else if(!firstPress || !secondPress) { panel.setPoint3(e.getX(), e.getY()); Global2.gX3 =e.getX(); Global2.gX3 =e.getY(); } } }
[ October 30, 2007: Message edited by: Maria Sachhause ]

Hi,
(sorry if my english is not understandable enough)

I have created a program where user can define start point and destination point with a mouse. After doing this line is drawn between these points(coordinates using drawLine).

Then I have this Run button and when it is pressed letter X starts to move to a direction which is "hard coded" to method (updateXPosition). This letter X moves once in a second(I am using thread and timer but timer is for other purposes). Starting point of letter X is start point(point what user has pressed first).

So I know:
+ coordinates of the start and destination
+ when to move letter X (thread/timer, it has to move once in a second)
+ coordinates where to start to move letter X
+ my current location (X current location)

My problem is:
How do I get that letter X to moves towards destination point once in a second???
What is a simpliest way to do it with my code??


Below is code of the program:
it is quite long but I really need help with this one.. Tried for days to solve this problem.


"Main"
import java.awt.event.KeyEvent; import java.awt.event.ActionListener; import java.awt.event.ActionEvent; import java.awt.Event; import java.awt.BorderLayout; import javax.swing.SwingConstants; import javax.swing.SwingUtilities; import javax.swing.KeyStroke; import java.awt.Point; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JMenuItem; import javax.swing.JMenuBar; import javax.swing.JMenu; import javax.swing.JFrame; import javax.swing.JDialog; import java.awt.*; import java.awt.event.*; import java.awt.Panel; import java.awt.Rectangle; import java.awt.GridBagLayout; import java.awt.Dimension; import javax.swing.border.BevelBorder; import javax.swing.BorderFactory; import java.awt.Color; import java.awt.Graphics; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import java.awt.event.MouseAdapter; import java.awt.event.MouseMotionListener; import java.awt.event.MouseMotionAdapter; import java.awt.Rectangle; import javax.swing.JTextField; import javax.swing.JButton; import java.util.GregorianCalendar; import java.util.Calendar; import java.util.Date; import javax.swing.Timer.*; import javax.swing.Timer; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.BorderLayout; import java.awt.Graphics; import javax.swing.JFileChooser; import javax.swing.JPanel; import javax.swing.JFrame; import javax.swing.JToolBar; import javax.swing.JButton; import java.awt.GridBagLayout; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import java.awt.event.MouseWheelEvent; import java.awt.event.MouseWheelListener; import javax.swing.JLabel; import java.util.Collections; import java.util.Vector; import java.awt.BasicStroke; import java.awt.Color; import java.awt.Font; import java.awt.Graphics2D; import java.awt.SystemColor; import java.awt.event.KeyEvent; import java.awt.geom.Ellipse2D; import java.awt.geom.Line2D; import java.awt.geom.Point2D; import java.awt.Rectangle; import java.io.BufferedReader; import java.io.File; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.awt.BorderLayout; import java.awt.Color; import java.awt.Dimension; import java.awt.GraphicsConfiguration; import java.awt.HeadlessException; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import java.lang.Object; import java.text.DecimalFormat; import java.util.*; import java.awt.geom.Point2D; public class main extends JFrame { private JFrame jFrame = null; private JPanel jContentPane = null; private Panel drawpanel = null; private JTextField jTextField_StartX = null; private JTextField jTextField_StartY = null; private JTextField jTextField_DestinationX = null; private JTextField jTextField_DestinationY = null; private JButton jButton_run = null; private JTextField jTextField_coordinates = null; JTextField jTextField_time = null; private JButton jButton_test = null; private JLabel jLabel = null; private JLabel jLabel1 = null; private JLabel jLabel11 = null; private JTextField jTextField_distance = null; private JLabel jLabel2 = null; public main() { super(); initialize(); } private void initialize() { this.setTitle("test drawing"); } private JFrame getJFrame() { if (jFrame == null) { jFrame = new JFrame(); jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); jFrame.setSize(771, 605); jFrame.setContentPane(getJContentPane()); jFrame.setTitle("MR. DrawMasta"); } return jFrame; } /** * This method initializes jContentPane */ private JPanel getJContentPane() { if (jContentPane == null) { jLabel2 = new JLabel(); jLabel2.setBounds(new Rectangle(14, 124, 55, 18)); jLabel2.setText("Distance"); jLabel11 = new JLabel(); jLabel11.setBounds(new Rectangle(1, 72, 93, 16)); jLabel11.setText("End Coorinates"); jLabel1 = new JLabel(); jLabel1.setBounds(new Rectangle(0, 25, 98, 16)); jLabel1.setText("Start Coorinates"); jLabel = new JLabel(); jLabel.setBounds(new Rectangle(1, 155, 100, 16)); jLabel.setText("Time from Start:"); jContentPane = new JPanel(); jContentPane.setLayout(null); jContentPane.add(getPanel(), null); jContentPane.add(getJTextField_StartX(), null); jContentPane.add(getJTextField_StartY(), null); jContentPane.add(getJTextField_DestinationX(), null); jContentPane.add(getJTextField_DestinationY(), null); jContentPane.add(getJButton_run(), null); jContentPane.add(getJTextField_coordinates(), null); jContentPane.add(getJTextField_time(), null); jContentPane.add(getJButton_test(), null); jContentPane.add(jLabel, null); jContentPane.add(jLabel1, null); jContentPane.add(jLabel11, null); jContentPane.add(getJTextField_distance(), null); jContentPane.add(jLabel2, null); } return jContentPane; } /** * This method initializes panel * * @return java.awt.Panel */ private Panel getPanel() { if (drawpanel == null) { drawpanel = new DrawingPanel(); drawpanel.setLayout(null); drawpanel.setBackground(new Color(205, 211, 255)); drawpanel.setSize(new Dimension(500, 500)); drawpanel.setMinimumSize(new Dimension(500, 500)); drawpanel.setMaximumSize(new Dimension(500, 500)); drawpanel.setLocation(new Point(160, 24)); drawpanel.addMouseMotionListener(new java.awt.event.MouseMotionListener() { public void mouseMoved(java.awt.event.MouseEvent e) { e.getX(); e.getY(); String coordiX = Integer.toString(e.getX()); String coordiY = Integer.toString(e.getY()); //We get coordinates to the jtextfield when mouse is moving jTextField_coordinates.setText("X:"+coordiX+" Y:"+coordiY); } public void mouseDragged(java.awt.event.MouseEvent e) { } }); } return drawpanel; } /** * This method initializes jTextField_StartX * * @return javax.swing.JTextField */ private JTextField getJTextField_StartX() { if (jTextField_StartX == null) { jTextField_StartX = new JTextField(); jTextField_StartX.setBounds(new Rectangle(23, 46, 39, 20)); } return jTextField_StartX; } /** * This method initializes jTextField_StartY * * @return javax.swing.JTextField */ private JTextField getJTextField_StartY() { if (jTextField_StartY == null) { jTextField_StartY = new JTextField(); jTextField_StartY.setLocation(new Point(69, 46)); jTextField_StartY.setSize(new Dimension(39, 20)); } return jTextField_StartY; } /** * This method initializes jTextField_DestinationX * * @return javax.swing.JTextField */ private JTextField getJTextField_DestinationX() { if (jTextField_DestinationX == null) { jTextField_DestinationX = new JTextField(); jTextField_DestinationX.setLocation(new Point(22, 92)); jTextField_DestinationX.setSize(new Dimension(39, 20)); } return jTextField_DestinationX; } /** * This method initializes jTextField_DestinationY * * @return javax.swing.JTextField */ private JTextField getJTextField_DestinationY() { if (jTextField_DestinationY == null) { jTextField_DestinationY = new JTextField(); jTextField_DestinationY.setLocation(new Point(69, 92)); jTextField_DestinationY.setSize(new Dimension(39, 20)); } return jTextField_DestinationY; } /** * This method initializes jButton_run * * @return javax.swing.JButton */ private JButton getJButton_run() { if (jButton_run == null) { jButton_run = new JButton(); jButton_run.setBounds(new Rectangle(23, 211, 76, 30)); jButton_run.setText("Run"); jButton_run.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent e) { //when run button is pressed timer starts it saves second from beginning //to Global variable secondFromBeginning startTimer(); updateXPosition(); /* * Global variables(int) have to be converted to String * if we want them to the JTextFields */ String startX = Integer.toString(Global.gX1); String startY = Integer.toString(Global.gY1); String destinationX = Integer.toString(Global.gX2); String destinationY = Integer.toString(Global.gY2); String distance = Double.toString(Global.distance); //set user selected coordinates to the jtextfields jTextField_StartX.setText(startX); jTextField_StartY.setText(startY); jTextField_DestinationX.setText(destinationX); jTextField_DestinationY.setText(destinationY); jTextField_distance.setText(distance); } }); } return jButton_run; } /** * This method initializes jTextField_coordinates * * @return javax.swing.JTextField */ private JTextField getJTextField_coordinates() { if (jTextField_coordinates == null) { jTextField_coordinates = new JTextField(); jTextField_coordinates.setBounds(new Rectangle(30, 520, 105, 20)); jTextField_coordinates.setEditable(false); } return jTextField_coordinates; } public int getSecondOftheMoment(int arvo) { arvo=Global.secondFromBeginning; return arvo; } public int getCurrentLocationX(int xb) { xb=Global.sailLocationX; return xb; } public int getCurrentLocationY(int yb) { yb=Global.sailLocationY; return yb; } /* *Timer method which saves seconds from beginning to the global *variable secondFromBeginning * */ public void startTimer() { ActionListener A = new ActionListener() { public void actionPerformed(ActionEvent actionEvent) { Global.secondFromBeginning++; jTextField_time.setText(""+Global.secondFromBeginning); Global.sailLocationX=Global.sailLocationX+10; Global.sailLocationY=Global.sailLocationY+10; //System.out.println("X:"+Global.sailLocationX+"\nY:"+Global.sailLocationY); } }; Timer timer = new Timer(1000, A); timer.start(); } /** * This method initializes jTextField_time * * @return javax.swing.JTextField */ private JTextField getJTextField_time() { if (jTextField_time == null) { jTextField_time = new JTextField(); jTextField_time.setBounds(new Rectangle(100, 153, 54, 20)); } return jTextField_time; } /** * This method initializes jButton_test * * @return javax.swing.JButton */ private JButton getJButton_test() { if (jButton_test == null) { jButton_test = new JButton(); jButton_test.setBounds(new Rectangle(23, 251, 78, 21)); jButton_test.setPreferredSize(new Dimension(56, 26)); jButton_test.setText("TEST"); jButton_test.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent e) { ///get second of this moment int temp=0; int thisSecond=0; thisSecond=getSecondOftheMoment(temp); System.out.println("Test: "+thisSecond); } }); } return jButton_test; } /** * UpdateXPosition is for drawing to the panel * "you can see the boat moving". */ public void updateXPosition() { Thread projectionThread = null; //get the starting point //and put it to xx and yy variables which are used for moving Global.xx = Global.sailLocationX; Global.yy = Global.sailLocationY; //Coordinates where we must go X and Y System.out.println("Destination coordinates X: "+Global.gX2+" Y: "+Global.gY2); Runnable miRunnable = new Runnable() { public void run() { try { int index = 0; while (true) { //here we decide where to go! //how to say go towards destination Global.xx += 10; Global.yy +=-10; //location of this moment. System.out.println("positions in THREAD are:" + Global.xx + " and " + Global.yy); index++; System.out.println("index "+index); Thread.sleep(1000); } } catch (Exception e) { e.printStackTrace(); } } }; if (projectionThread == null) { projectionThread = new Thread(miRunnable); projectionThread.start(); } } /** * This method initializes jTextField_distance * * @return javax.swing.JTextField */ private JTextField getJTextField_distance() { if (jTextField_distance == null) { jTextField_distance = new JTextField(); jTextField_distance.setBounds(new Rectangle(74, 125, 37, 20)); } return jTextField_distance; } /** * Launches this application */ public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { public void run() { main application = new main(); application.getJFrame().setVisible(true); } }); } }/// main class /** * * This is panel for drawing. Must create another class to extending panel so we can override paint method */ class DrawingPanel extends Panel { ///for drawing start to finnish int x1; int y1; int x2; int y2; // Start and end point of line ///for crosshair drawing int horizontalX1=0; int horizontalY1=250; int horizontalX2=500; int horizontalY2=250; int verticalX1=250; int verticalY1=0; int verticalX2=250; int verticalY2=500; /** * mouse listener to panel. constructor */ public DrawingPanel() { MouseListener mouseListener = new DrawingMouseListener(this); addMouseListener(mouseListener); x1 = this.x1; y1 = this.y1; x2 = this.x2; y2 = this.y2; int horizontalX1=this.horizontalX1; int horizontalY1=this.horizontalY1; int horizontalX2=this.horizontalX2; int horizontalY2=this.horizontalY2; int verticalX1=this.verticalX1; int verticalY1=this.verticalY1; int verticalX2=this.verticalX2; int verticalY2=this.verticalY2; } //avoid flickering override update and calls paint... no flickering! public void update(Graphics g) { paint(g); g.setColor(Color.red); //starts do draw X to every second to direction (updateX()) g.drawString("X",Global.xx, Global.yy); } // update public void paint(Graphics g) { g.drawString("Start",x1-8,y1-8); g.drawLine(x1, y1, x2, y2); // Draw the line connecting two points g.drawString("Destination",x2,y2); //draws cross hair g.setColor(Color.blue); g.drawLine(horizontalX1,horizontalY1,horizontalX2,horizontalY2); g.drawLine(verticalX1,verticalY1,verticalX2,verticalY2); g.setColor(Color.black); //start location //we send start point to global variables sailLocationX, sailLocationY //these variables acts only as first value givers in updateLocationX method Global.sailLocationX=x1; Global.sailLocationY=y1; g.setColor(Color.red); //length of the line lineLength(); repaint(); g.setColor(Color.black); //coordinates Global.gX1=x1; Global.gY1=y1; Global.gX2=x2; Global.gY2=y2; } //Method that calculates distance between start and finnish public void lineLength () { //integer to double double xx1 = (double) x1 ; double yy1 = (double)(y1); double xx2 = (double)(x2); double yy2 = (double)(y2); //count length of the line double a,b,c; a=xx2-xx1; b=yy2-yy1; c=a*a+b*b; c=Math.sqrt(c); c=Math.round(c); Global.distance=c; } /** * First point eli alkupiste */ public void setPoint1(int x, int y) { x1 = x; y1 = y; repaint(); } /** * End point */ public void setPoint2(int x, int y) { x2 = x; y2 = y; repaint(); } public void currentLocation(int x, int y) { Global.gX1=x1; Global.gY1=y1; Global.sailLocationX = x1; Global.sailLocationY = y1; repaint(); } } /** * A mouse listener for a DrawingPanel */ class DrawingMouseListener extends MouseAdapter { DrawingPanel panel; // The panel to draw on boolean firstPress = true; // True when expecting first mouse press /** * Constructor */ public DrawingMouseListener(DrawingPanel panel) { this.panel = panel; } /** * hiiren kuuntelija joka asettaa molemmat pisteet eka ja sitten toka * my�hemmin tulee muuten kolmas. * Asetettaan molemmat pisteet, eli kun eka kerran painaa hiirt� * niin eka ja sitten kun toisen kerran niin toka */ public void mousePressed(MouseEvent e) { if (firstPress) { panel.setPoint1(e.getX(), e.getY()); panel.setPoint2(e.getX(), e.getY()); firstPress = false; } else { panel.setPoint2(e.getX(), e.getY()); firstPress = true; } } }


Class for Global variables
[code]


/* This class exist because it is easiest way to use "global" variables
*
*/
public class Global
{
// Must have some value at beginning otherwise main does not work as it should be
public static int gX1 = 5;
public static int gY1 = 5;
public static int gX2 = 5;
public static int gY2 = 5;
public static int secondFromBeginning = 0;

public static int sailLocationX = 10;
public static int sailLocationY = 10;

public static double distance = 0;

public static int counter=1;


public static int xx = 0;
public static int yy = 0;


}
[code]

Hi,
I have manage to make a program which can read XML files to Java variables.
Now my problem is how to get user given information to the xml file?
I mean that user gives boat name, year, class and something and then new xml file is created. Created file should look like my �hand made� BOAT.xml.
How can I do this?
Please help me I have tried to do this quite hard without success....  Maria


Below is an example xml file BOAT.xml and my Java code (if it helps).

<BOAT><boatInfo>
<boat name="Testeri"
year="1958"
class="10"
something="will sink"/>

</boatInfo></BOAT>



import net.n3.nanoxml.*; import java.io.*; import java.util.Enumeration; public class LukumuuttujiinXML { public static void main(String[] args)throws Exception { BufferedReader stdin= new BufferedReader ( new InputStreamReader ( System.in)); ///Lets ask user what file he wants to open System.out.println("Name of the file:"); String xmlFileName= stdin.readLine(); //user doesn't need to write name.xml xmlFileName=xmlFileName+".xml"; System.out.println("OK lets open: "+xmlFileName); IXMLParser xmlParser; IXMLReader xmlReader; IXMLElement VENE; xmlParser = XMLParserFactory.createDefaultXMLParser(); xmlReader = StdXMLReader.fileReader(xmlFileName); xmlParser.setReader(xmlReader); //we read the file and we parse it IXMLElement xmlDoc = (IXMLElement) xmlParser.parse(); // must get some "tag" called IXMLElement node = xmlDoc.getFirstChildNamed("BOAT"); node = xmlDoc.getFirstChildNamed("boatInfo"); Enumeration boats = node.enumerateChildren(); while (boats.hasMoreElements()) { VENE = (IXMLElement) boats.nextElement(); //put boat name to the variable name String name=VENE.getAttribute("name", "empty"); String year=VENE.getAttribute("year", "empty"); String bclass = VENE.getAttribute("class", "empty"); String something=VENE.getAttribute("something","empty"); System.out.println("Name variable value: "+name); System.out.println("Year variable value: "+year); System.out.println("Class variable value: "+bclass); System.out.println("Something variable value:"+something); } } }

Hi,

(Sorry about broken english)
I have read the nanoxml tutorial and I have manage to do a little program(based on tutorial).

In this program:
1.User gives a name of the .xml file which he/she wants to open
2.File is opened and printed to the screen in this format: <BOAT><BOAT><NAME>Hank</NAME><YEAR>1980</YEAR><CLASS>10</CLASS></BOAT></BOAT>

Now my problem is how to get for example <NAME> value(Hank) from BOAT.xml to Java variable...called String Name??

So I need to get every piece of information from BOAT.xml to different Java variable, but I cannot do that...
I have tried to do this in many ways.... without success, help me on this one please..

-Maria-

JAVA CODE:

import net.n3.nanoxml.*; import java.io.*; import java.util.Vector; import java.util.Iterator; import java.util.*; public class LukumuuttujiinXML { public static void main(String[] args) throws Exception { BufferedReader stdin= new BufferedReader ( new InputStreamReader ( System.in)); String Name; int Year; int Class; //User select what file to open System.out.println("Open file called:"); String xmlFileName= stdin.readLine(); xmlFileName=xmlFileName+".xml"; System.out.println("Lets open: "+xmlFileName); IXMLParser parser = XMLParserFactory .createDefaultXMLParser(); IXMLReader reader = StdXMLReader.fileReader(xmlFileName); parser.setReader(reader); IXMLElement xml = (IXMLElement) parser.parse(); XMLWriter writer = new XMLWriter(System.out); writer.write(xml); } }

BOAT.xml

<?xml version="1.0"?> <!DOCTYPE BOAT [ <!ELEMENT BOAT (BOAT*)> <!ELEMENT BOAT (NAME, YEAR, CLASS)> <!ELEMENT NAME (#PCDATA)> <!ELEMENT YEAR (#PCDATA)> <!ELEMENT CLASS (#PCDATA)> ]> <BOAT> <BOAT> <NAME>LOKKI</NAME> <YEAR>1998</YEAR> <CLASS>10</CLASS> </BOAT> </BOAT>

First, sorry about broken english.

I have tried to make NanoXML work on Ecplipse without success.
This is what I have tried do so far step-by-step:

1. I create new project (file-new-java project) and name it for example as TEST
then I select Add External JARs and I select nanoxml-2.2.1.jar

2. I create a class called DumpXML(it's from nanoxml tutorial)

3. Then Eclipse says "The Import net cannot be resolved"

Why it cannot be resolved is a mystery to me, please help me.

Can you describe how I can configure it on Eclipse?
please step by step. thanks.


Code is below if it helps.

import net.n3.nanoxml.*; import java.io.*; public class DumpXML { public static void main(String[] args) throws Exception { IXMLParser parser = XMLParserFactory.createDefaultXMLParser(); IXMLReader reader = StdXMLReader.fileReader("test.xml"); parser.setReader(reader); IXMLElement xml = (IXMLElement) parser.parse(); XMLWriter writer = new XMLWriter(System.out); writer.write(xml); } }

Hi,
I am learning to use Db4o database with Java and now I have a small Java related problem. (and sorry about broken english )
1. First I search database for movies of given genre and there is no problem.
2. I also can print out movies of given genre without promblem
3. Problem comes when I try to save founded list items to new objects (see code below).

How can I save founded list items to objects?
What is wrong in my code?
I wound be very happy for help.


public void findiGenre() { System.out.println("Give genre::"); List items = db.query(new Predicate() { String nameGenre=LUE.mjono(); public boolean match(Movie movie) { return nameGenre.equals(movie.genrei()); } public boolean match(Object arg0) { return false; } }); // printing objects switch have right genre // for example: ID: 1 name: titanic for(int n = 0; n<items.size(); n++) { //Here I can print out all movies swich have right genre System.out.println(((Movie)items.get(n))); // Here I try to make new object switch is �items� and save it to db. // so if I have 3 movies swich have genre �horror� I want to make 3 new //objects and save them to db. //First I try to get items information to movie object (It�s not working) Movie movie= new Movie(items); Collection collectionOfGenre = new Collection(movie); db.set(collectionOfGenre); } }