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Thread: java noob needs help with text editor code :)

  1. #1
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    Default java noob needs help with text editor code :)

    import java.awt.*;
    import java.awt.event.*;
    import java.io.*;
    import javax.swing.*;
    import javax.swing.text.*;
    import java.util.Hashtable;
     
    class TextEdit extends Jframe {
     
    	private JTextArea area = new JTextArea(10,60);
    	private JFileChooser dialog =
    		new JfileChooser(System.getProperty("user.dir"));
     
    	private String aktuellFil = "namlös";
    	private boolean ändrad = false;
     
    	public TextEdit() {   //layout
     
    		area.setFont(new Font("Monospaces", Font.PLAIN, 12));
    		JscrollPane scroll = new JScrollPane(area, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
    		add(scroll, BorderLayout.CENTER);
     
    		JMenuBar mb = new JMenuBar();
    		setJMenuBar(mb);
    		JMenu arkiv = new JMenu("Arikiv");
    		Jmenu redi = new Jmenu("Redigera");
    		mb.add(arkiv); mb.add(redi);
     
    		arkiv.add(ny); arkiv.add(öppna);
    		arkiv.add(spara); arkiv.add(sparaSom);
    		arkiv.addSeparator(); arkiv.add(avsluta);
    		for (int i = 0; i<4; i++)
    			arkiv.getItem(i).setIcon(null);
     
     
    		redi.add(klipp); redi.add(kopierar); redi.add(klistra);
    		redi.getItem(0).setText("Klipp ut");
    		redi.getItem(1).setText("Kopiera");
    		redi.getItem(2).setText("Klistra in");
     
    		JToolBar verktyg = new JToolBar();
    		add(verktyg, BorderLayout.NORTH);
    		verktyg.add(ny); verktyg.add(öppna);
    		verktyg.add(spara); verktyg.addSeparator();
    		JButton cut=verktyg.add(klipp), cop=verktyg.add(kopiera), pas=verktyg.add(klistra);
    		cut.setText(null); cut.setIcon(new ImageIcon("cut.gif"));
    		cop.setText(null); cop.setIcon(new ImageIcon("copy.gif"));
    		pas.setText(null); pas.setIcon(new ImageIcon("paste.gif"));
     
    		spara.setEableEnable(false);
    		sparaSom.setEnable(false);
     
    		setDefaultCloseOperation(EXIT_ON_CLOSE);
    		pack();
    		area.addKeyListener(kl);
    		setTitle(aktuellFil);
    		setVisible(true);	
    	}
     
    	private KeyListener kl = new KeyAdapter() {
    		public void keyPressed(KeyEvent e) {
    			ändrad = true;
    			spara.setEnabled(true);
    			sparaSom.setEnabled(true);
    		}
    	};
     
     
    	Action ny = new AbstractAction("Ny", new ImageIcon("new.gif")) {
    		public void actionPerformed(actionEvent e) {
    			sparaGammal();
    			area.setText("");
    			aktuellFil = "namnlös";
    			setTitle(aktuellFil);
    			ändrad = false;
    			spara.setEnabled(false);
    			sparaSom.setEnabled(false);
    		}6
    	};
     
    	Action öppna = new AbstractAction("öppna ...", new ImageIcon("Open.gif")){
    		public void actionPerformed(ActionEvent e) {
    			sparaGammal();
    			if (dialog.showOpenDialog(null)==JFileChooser.APPROVe_OPTION) {
    				läsInFil(dialog.getSelectedFile().getAbsolutePath());
    			}
    			sparaSom.setEnabled(true);
    		}
    	};
     
     
    	Action spara = new AbstractAction("Spara", new ImageIcon("save.gif)) {
    		public void actionPerformed(ActionEvent e) {
    			if (!aktuellFil.equals("namnlös"))
    				sparaFil(aktuellFil);
    				else
    				sparaFilSom();
    		}
    	};
     
    	Action spara som = new AbstractAction("Spara som.."){
    		public void actionPerformed(ActionEvent e){
    			sparaFilsom();
    		}
    	};
     
    	Action sparaSom = new AbstractAction("Avsluta") {
    		public void actionPerformed(ActionEvent e) {
    			sparaGammal();
    			System.exit(0);
    		}
    	};
     
    	ActionMap m = area.getActionMap();
    	Action klipp =m.get(DefaultEditiorKit.cutAction);
    	Action kopiera =m.get(DefaultEditiorKit.copyAction);
    	Action klistra =m.get(DefaultEditiorKit.pasteAction);
     
    	private void sparaFilSom() {
    		if (dialog.showSaveDialog(null)==JFileChooser.APPROVE_OPTION)
    			sparaFil(dialog.getSelectedFile().getAbsolutePath());
    	}
     
    	private void sparaFil(String filnamn) {
    		try {
    			FileWriter w = mew FileWriter(filnamn);
    			area.write(w);
    			w.close();
    			aktuellFil = filnamn;
    			setTitle(aktuellFil);
    			ändrad = false;
    			spara.setEnabled(false);
     
    		}
    		catch (IOException e) {}
    	}
    	public void sparaGammal() {
    		if (ändrad) {
    			if (JOptionPane.showConfirmDialog
    				(this,  "Skall filen " ? aktuellFil ? " sparas?", "",
    				JOptionPane.YES_NO_OPTION) == JOptionPane.YES_OPTION)
    			sparaFil(aktuellFil);
    		}
    	}
     
    	private void läsInFil(String filnamn) {
    		try {
    			FileReader r = new FileReader(filnamn);
    			area.read(r, null);
    			r.close();
    			aktuellFil = filnamn;
    			setTitle(aktuellFil);
    			ändrad = false;
    	}
    	catch (IOException e) {
    		Toolkit.getDefaulttOOLKIT().Beep();
    		JOptionPane.showMessageDialog
    			(this, "Det går inte att hitta filen " + filnamn);
    	}
    }

    I get 47 "error: class, interface, or enum expected" errors.
    would very much like some help. thanks


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: java noob needs help with text editor code :)

    class, interface, or enum expected
    Check that all the { and } are properly paired.
    Copy and paste here the full text of the first few error messages that show where they occur in the source code.


    Please edit your post and wrap your code with
    [code=java]
    <YOUR CODE HERE>
    [/code]
    to get highlighting and preserve formatting.
    If you don't understand my answer, don't ignore it, ask a question.

  3. #3
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    Default Re: java noob needs help with text editor code :)

    I have managed to fix some things, so i only have 16 errors now. The code in the first post in also updated. I think there still might be some very simple errors like a missing ")" or something. But am I missing any import packages, or something of that sort?

    here are all the errors:

    --------------------Configuration: <Default>--------------------
    C:\Users\Proxxy\workspace\Prg ALLT\TextEdit.java:78: error: illegal start of type
    }6
    ^
    C:\Users\Proxxy\workspace\Prg ALLT\TextEdit.java:78: error: ';' expected
    }6
    ^
    C:\Users\Proxxy\workspace\Prg ALLT\TextEdit.java:92: error: unclosed string literal
    Action spara = new AbstractAction("Spara", new ImageIcon("save.gif)) {
    ^
    C:\Users\Proxxy\workspace\Prg ALLT\TextEdit.java:92: error: ')' expected
    Action spara = new AbstractAction("Spara", new ImageIcon("save.gif)) {
    ^
    C:\Users\Proxxy\workspace\Prg ALLT\TextEdit.java:93: error: ';' expected
    public void actionPerformed(ActionEvent e) {
    ^
    C:\Users\Proxxy\workspace\Prg ALLT\TextEdit.java:93: error: invalid method declaration; return type required
    public void actionPerformed(ActionEvent e) {
    ^
    C:\Users\Proxxy\workspace\Prg ALLT\TextEdit.java:101: error: ';' expected
    Action spara som = new AbstractAction("Spara som.."){
    ^
    C:\Users\Proxxy\workspace\Prg ALLT\TextEdit.java:101: error: <identifier> expected
    Action spara som = new AbstractAction("Spara som.."){
    ^
    C:\Users\Proxxy\workspace\Prg ALLT\TextEdit.java:126: error: ';' expected
    FileWriter w = mew FileWriter(filnamn);
    ^
    C:\Users\Proxxy\workspace\Prg ALLT\TextEdit.java:140: error: : expected
    (this, "Skall filen " ? aktuellFil ? " sparas?", "",
    ^
    C:\Users\Proxxy\workspace\Prg ALLT\TextEdit.java:140: error: : expected
    (this, "Skall filen " ? aktuellFil ? " sparas?", "",
    ^
    C:\Users\Proxxy\workspace\Prg ALLT\TextEdit.java:140: error: illegal start of expression
    (this, "Skall filen " ? aktuellFil ? " sparas?", "",
    ^
    C:\Users\Proxxy\workspace\Prg ALLT\TextEdit.java:140: error: ')' expected
    (this, "Skall filen " ? aktuellFil ? " sparas?", "",
    ^
    C:\Users\Proxxy\workspace\Prg ALLT\TextEdit.java:141: error: illegal start of expression
    JOptionPane.YES_NO_OPTION) == JOptionPane.YES_OPTION)
    ^
    C:\Users\Proxxy\workspace\Prg ALLT\TextEdit.java:141: error: ';' expected
    JOptionPane.YES_NO_OPTION) == JOptionPane.YES_OPTION)
    ^
    C:\Users\Proxxy\workspace\Prg ALLT\TextEdit.java:160: error: reached end of file while parsing
    }
    ^
    16 errors

    Process completed.

  4. #4
    Super Moderator Norm's Avatar
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    Default Re: java noob needs help with text editor code :)

    What is the 6 doing there?

    Check that all "s are in pairs. One before and one after the String literal: "The literal"


    Suggestion for future programs. Compile more often. Don't wait so long before compiling that you get so many errors.
    If you don't understand my answer, don't ignore it, ask a question.

  5. #5
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    Default Re: java noob needs help with text editor code :)

    nvm, the code is just too messed up. but thank you very much for the help.

  6. #6
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    Default Re: java noob needs help with text editor code :)

    reached end of file while parsing
    Check that all the {s have a matching }
    If you don't understand my answer, don't ignore it, ask a question.

  7. #7
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    Default Re: java noob needs help with text editor code :)

    Hello!
    I am sitting with proxxy and working with this code, trying too get it work.
    Now we are down to 10 errors =) and they all seems to be at the same place...

    import java.awt.*;
    import java.awt.event.*;
    import java.io.*;
    import javax.swing.*;
    import javax.swing.text.*;
     
    class TextEdit extends Jframe {
     
    	private JTextArea area = new JTextArea(10,60);
    	private JFileChooser dialog =
    		new JfileChooser(System.getProperty("user.dir"));
     
    	private String aktuellFil = "namlös";
    	private boolean ändrad = false;
     
    	public TextEdit() {   //layout
     
    		area.setFont(new Font("Monospaces", Font.PLAIN, 12));
    		JscrollPane scroll = new JScrollPane(area,JScrollPane.VERTICAL_SCROLLBAR_ALWAYS,JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
    		add(scroll, BorderLayout.CENTER);
     
    		JMenuBar mb = new JMenuBar();
    		setJMenuBar(mb);
    		JMenu arkiv = new JMenu("Arikiv");
    		Jmenu redi = new Jmenu("Redigera");
    		mb.add(arkiv); mb.add(redi);
     
    		arkiv.add(ny); arkiv.add(öppna);
    		arkiv.add(spara); arkiv.add(sparaSom);
    		arkiv.addSeparator(); arkiv.add(avsluta);
    		for (int i = 0; i<4; i++)
    			arkiv.getItem(i).setIcon(null);
     
     
    		redi.add(klipp); redi.add(kopiera); redi.add(klistra);
    		redi.getItem(0).setText("Klipp ut");
    		redi.getItem(1).setText("Kopiera");
    		redi.getItem(2).setText("Klistra in");
     
    		JToolBar verktyg = new JToolBar();
    		add(verktyg, BorderLayout.NORTH);
    		verktyg.add(ny); verktyg.add(öppna);
    		verktyg.add(spara); verktyg.addSeparator();
    		JButton cut=verktyg.add(klipp), cop=verktyg.add(kopiera), pas=verktyg.add(klistra);
    		cut.setText(null); cut.setIcon(new ImageIcon("cut.gif"));
    		cop.setText(null); cop.setIcon(new ImageIcon("copy.gif"));
    		pas.setText(null); pas.setIcon(new ImageIcon("paste.gif"));
     
    		spara.setEable(false);
    		sparaSom.setEnable(false);
     
    		setDefaultCloseOperation(EXIT_ON_CLOSE);
    		pack();
    		area.addKeyListener(kl);
    		setTitle(aktuellFil);
    		setVisible(true);	
    	}
     
    	private KeyListener kl = new KeyAdapter() {
    		public void keyPressed(KeyEvent e) {
    			ändrad = true;
    			spara.setEnabled(true);
    			sparaSom.setEnabled(true);
    		}
    	};
     
     
    	Action ny = new AbstractAction("Ny", new ImageIcon("new.gif")) {
    		public void actionPerformed(ActionEvent e) {
    			sparaGammal();
    			area.setText("");
    			aktuellFil = "namnlös";
    			setTitle(aktuellFil);
    			ändrad = false;
    			spara.setEnabled(false);
    			sparaSom.setEnabled(false);
    		}
    	};
     
    	Action öppna = new AbstractAction("öppna ...", new ImageIcon("Open.gif")){
    		public void actionPerformed(ActionEvent e) {
    			sparaGammal();
    			if (dialog.showOpenDialog(null)==JFileChooser.APPROVE_OPTION) {
    				läsInFil(dialog.getSelectedFile().getAbsolutePath());
    			}
    			sparaSom.setEnabled(true);
    		}
    	};
     
     
    	Action spara = new AbstractAction("Spara", new ImageIcon("save.gif")) {
    		public void actionPerformed(ActionEvent e) {
    			if (!aktuellFil.equals("namnlös"))
    				sparaFil(aktuellFil);
    				else
    				sparaFilSom();
    		}
    	};
     
    	Action sparaSom = new AbstractAction("Spara som.."){
    		public void actionPerformed(ActionEvent e){
    			sparaFilsom();
    		}
    	};
     
    	Action avsluta = new AbstractAction("Avsluta") {
    		public void actionPerformed(ActionEvent e) {
    			sparaGammal();
    			System.exit(0);
    		}
    	};
     
    	ActionMap m = area.getActionMap();
    	Action klipp = m.get(DefaultEditorKit.cutAction);
    	Action kopiera = m.get(DefaultEditorKit.copyAction);
    	Action klistra = m.get(DefaultEditorKit.pasteAction);
     
    	private void sparaFilSom() {
    		if (dialog.showSaveDialog(null)==JFileChooser.APPROVE_OPTION)
    			sparaFil(dialog.getSelectedFile().getAbsolutePath());
    	}
     
    	private void sparaFil(String filnamn) {
    		try {
    			FileWriter w = new FileWriter(filnamn);
    			area.write(w);
    			w.close();
    			aktuellFil = filnamn;
    			setTitle(aktuellFil);
    			ändrad = false;
    			spara.setEnabled(false);
     
    		}
    		catch (IOException e) {}
    	}
    	public static void main (String[] arg) {
      new TextEdit();
    	}
    }
    	private void sparaGammal() {  //error
    		if (ändrad) {
    			if (JOptionPane.showConfirmDialog
    				(this,  "Skall filen " + aktuellFil + " sparas?", "",
    				JOptionPane.YES_NO_OPTION) == JOptionPane.YES_OPTION)
    			sparaFil(aktuellFil);
    		}  //error
    	}
     
    	private void läsInFil(String filnamn) {
    		try {
    			FileReader r = new FileReader(filnamn);
    			area.read(r, null);  //error
    			r.close();  //error
    			aktuellFil = filnamn;  //error
    			setTitle(aktuellFil);  //error
    			ändrad = false;  //error
    	}  //error
    	catch (IOException e) {
    		Toolkit.getDefaultToolkit().beep();
    		JOptionPane.showMessageDialog  //error
    			(this, "Det går inte att hitta filen " + filnamn);
    	}  //error
    }

    We have marked where the errors seems to occur, they are all located at the ending of the code.

    We are desperate and BIG NOOBS! =P Can someone give us the answer to what is wrong? All help is highly appreciated =D

  8. #8
    Super Moderator Norm's Avatar
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    Default Re: java noob needs help with text editor code :)

    Please copy and post the full text of the error messages.

    We have marked where the errors seems to occur
    How did you mark it?
    Something like: //<<<<<<<<<<<<<<<<<< HERE IS ERROR<<<<<
    that is very easy to see and find.
    If you don't understand my answer, don't ignore it, ask a question.

  9. #9
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    Default Re: java noob needs help with text editor code :)

    You have to excuse my stupidity XD as i have stated we ARE noobs.

    here is the eror messages...
    --------------------Configuration: <Default>--------------------
    C:\Users\treny\Desktop\Prg C\TextEdit.java:140: error: class, interface, or enum expected
    private void sparaGammal() { //error
    ^
    C:\Users\treny\Desktop\Prg C\TextEdit.java:146: error: class, interface, or enum expected
    } //error
    ^
    C:\Users\treny\Desktop\Prg C\TextEdit.java:152: error: class, interface, or enum expected
    area.read(r, null); //error
    ^
    C:\Users\treny\Desktop\Prg C\TextEdit.java:153: error: class, interface, or enum expected
    r.close(); //error
    ^
    C:\Users\treny\Desktop\Prg C\TextEdit.java:154: error: class, interface, or enum expected
    aktuellFil = filnamn; //error
    ^
    C:\Users\treny\Desktop\Prg C\TextEdit.java:155: error: class, interface, or enum expected
    setTitle(aktuellFil); //error
    ^
    C:\Users\treny\Desktop\Prg C\TextEdit.java:156: error: class, interface, or enum expected
    ändrad = false; //error
    ^
    C:\Users\treny\Desktop\Prg C\TextEdit.java:157: error: class, interface, or enum expected
    } //error
    ^
    C:\Users\treny\Desktop\Prg C\TextEdit.java:160: error: class, interface, or enum expected
    JOptionPane.showMessageDialog //error
    ^
    C:\Users\treny\Desktop\Prg C\TextEdit.java:162: error: class, interface, or enum expected
    } //error
    ^
    10 errors

    Process completed.


    And yes, the error lines are marked with //error

  10. #10
    Super Moderator Norm's Avatar
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    Default Re: java noob needs help with text editor code :)

    The compiler has found code past the end of the class definition (past its ending }) that is not one of these:
    class, interface, or enum

    Check that the code after the } ending the class's definition is correctly located. That code should probably be inside the one and only class definition you have. If there is only one class, move the } that ends the class's definition to the end of the source.
    If you don't understand my answer, don't ignore it, ask a question.

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