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Beitrag 27 von 1460 (2%)

Autor	Juli747
Datum	16.01.06, 15:14
Betreff	eventhandling / Problemmeldung Bitte schaut euch den Code an

---

Hallo, habe fehlermeldung bei diesem Listing das ich nicht wegkriege. Bin Fuer jede Hilfe dankbar. Auf knopfdruck soll ein text codiert werden .bei der methode action gibt netbeans eine Nullpointerexception an.


/*
* MorseApp.java
*
* Created on 15. Januar 2006, 02:24
*

• To change this template, choose Tools | Options and locate the template under
  
• the Source Creation and Management node. Right-click the template and choose
  
• Open. You can then make changes to the template in the Source Editor.
  

*/

package abi;

import java.awt.event.*;
import java.io.*;
import java.util.regex.*;
import java.awt.*;
import java.applet.*;
import sun.audio.*;
import java.util.*;
import java.net.*;
import javax.swing.*;
import java.util.StringTokenizer;



/**
*
* @author karaali
*/
public class MorseApp extends Frame{
    
    class WAdapter extends WindowAdapter
    {
        public void windowClosing( WindowEvent e )
        {
            System.exit(0);
        }
    }
    
    private Button playButton;
    private Button transButton;
    private Button DateiImport;
    private TextArea input;
    private TextArea output;
    private String morse;
    private String text;
    private int wpm = 30;
    private Choice wpmChoice;
    byte [] sample = null;
    AudioData playable = null;
    int sPos;
    int timeunit;
    
    final static String CODES[][]={
        {"A",".-"},
        {"B","-..."},
        {"C","-.-."},
        {"D","-.."},
        {"E","."},
        {"F","..-."},
        {"G","--."},
        {"H","...."},
        {"I",".."},
        {"J",".---"},
        {"K","-.-"},
        {"L",".-.."},
        {"M","--"},
        {"N","-."},
        {"O","---"},
        {"P",".--."},
        {"Q","--.-"},
        {"R",".-."},
        {"S","..."},
        {"T","-"},
        {"U","..-"},
        {"V","...-"},
        {"W",".--"},
        {"X","-..-"},
        {"Y","-.--"},
        {"Z","--.."},
        {"0","----"},
        {"1",".----"},
        {"2","..---"},
        {"3","...--"},
        {"4","....-"},
        {"5","....."},
        {"6","-...."},
        {"7","--..."},
        {"8","---.."},
        {"9","----."}
        
    };
    
    
    public MorseApp () {
        
        WAdapter wa = new WAdapter();
        addWindowListener( wa );
        
        Font butFont = new Font("Helvetica", Font.PLAIN, 10);
        
        GridBagLayout gbag = new GridBagLayout();
        setLayout(gbag);
        GridBagConstraints con = new GridBagConstraints();
        
        
        Label l4 = new Label("Morse Code Übersetzer", Label.CENTER);
        l4.setFont(new Font("Helvetica", Font.BOLD, 16));
        con.gridx = 0;
        con.gridy = 0;
        con.gridwidth = 6;
        con.anchor = GridBagConstraints.CENTER;
        //con.fill = GridBagConstraints.HORIZONTAL;
        con.weightx = 1.0;
        gbag.setConstraints(l4, con);
        add(l4);
        
        Label l2 = new Label("TEXTEINGABE", Label.CENTER);
        l2.setFont(new Font("Helvetica", Font.BOLD, 12));
        con.gridx = 0;
        con.gridy = 1;
        gbag.setConstraints(l2, con);
        add(l2);
        
        TextArea input = new TextArea("",5, 90,
        TextArea.SCROLLBARS_VERTICAL_ONLY);
        input.setEditable(true);
        input.setFont(new Font("Courier", Font.PLAIN, 10));
        con.gridx = 0;
        con.gridy = 2;
        gbag.setConstraints(input, con);
        add(input);
        
        
        Label l3 = new Label("MORSECODE", Label.CENTER);
        l3.setFont(new Font("Helvetica", Font.BOLD, 12));
        con.gridx = 0;
        con.gridy = 3;
        gbag.setConstraints(l3, con);
        add(l3);
        
        TextArea output = new TextArea("",5, 90,
        TextArea.SCROLLBARS_VERTICAL_ONLY);
        output.setEditable(true);
        output.setFont(new Font("Courier", Font.PLAIN, 10));
        con.gridx = 0;
        con.gridy = 4;
        gbag.setConstraints(output, con);
        add(output);
        
        transButton = new Button("Übersetze");
        transButton.setFont(butFont);
        transButton.setForeground(Color.black);
        transButton.setBackground(Color.lightGray);
        con.gridx = 0;
        con.gridy = 5;
        con.gridwidth = 3;
        con.ipadx = 2;
        con.ipady = 2;
        con.insets = new Insets(6,0,0,0);
        gbag.setConstraints(transButton, con);
        add(transButton);
        
        
        
        
        Panel p1 = new Panel();
        GridBagLayout gbag1 = new GridBagLayout();
        p1.setLayout(gbag1);
        
        con.gridx = 3;
        con.gridy = 5;
        con.gridwidth = 3;
        con.ipadx = 0;
        con.ipady = 0;
        gbag.setConstraints(p1, con);
        add(p1);
        
        //sub panel
        playButton = new Button("Play");
        playButton.setFont(butFont);
        playButton.setForeground(Color.black);
        playButton.setBackground(Color.lightGray);
        con.gridx = 0;
        con.gridy = 0;
        con.gridwidth = 1;
        con.ipadx = 2;
        con.ipady = 2;
        con.insets = new Insets(0,0,0,0);
        gbag1.setConstraints(playButton, con);
        p1.add(playButton);
        
        p1.add(playButton);Label l5 = new Label("mit");
        l5.setFont(butFont);
        con.gridx = 1;
        con.gridy = 0;
        con.ipadx = 0;
        con.ipady = 0;
        gbag1.setConstraints(l5, con);
        p1.add(l5);
        
        wpmChoice = new Choice();
        wpmChoice.setFont(butFont);
        wpmChoice.addItem("30");
        wpmChoice.addItem("40");
        wpmChoice.addItem("50");
        wpmChoice.addItem("60");
        wpmChoice.addItem("70");
        wpmChoice.addItem("80");
        wpmChoice.addItem("90");
        wpmChoice.addItem("100");
        wpmChoice.addItem("110");
        wpmChoice.addItem("120");
        wpmChoice.addItem("130");
        wpmChoice.addItem("140");
        wpmChoice.addItem("150");
        wpmChoice.addItem("160");
        wpmChoice.addItem("170");
        wpmChoice.addItem("180");
        wpmChoice.addItem("190");
        wpmChoice.addItem("200");
        wpmChoice.select(3);
        wpmChoice.setForeground(Color.black);
        wpmChoice.setBackground(Color.lightGray);
        con.gridx = 2;
        con.gridy = 0;
        gbag1.setConstraints(wpmChoice, con);
        p1.add(wpmChoice);
        
        Label l1 = new Label("WPM");
        l1.setFont(butFont);
        con.gridx = 3;
        con.gridy = 0;
        gbag1.setConstraints(l1, con);
        p1.add(l1);
        
        DateiImport = new Button("DateiImport");
        playButton.setFont(butFont);
        playButton.setForeground(Color.black);
        playButton.setBackground(Color.lightGray);
        con.gridx = 0;
        con.gridy = 6;
        con.gridwidth = 6;
        con.anchor = GridBagConstraints.CENTER;
        gbag.setConstraints(DateiImport, con);
        add(DateiImport);
        
        
    }
    
    public boolean action(Event event, Object arg) {
        if (event.target == transButton) {
            if (isText(input.getText())) {
                text = input.getText();
                morse = getWord(text);
                output.setText(morse);
                } else {
                morse = input.getText();
                text = getMorseCode(morse);
                output.setText(text);
            }
            return true;
        }
        if (event.target == playButton) {
            //Applet.this.showStatus(status);
            if (isText(input.getText())) {
                text = input.getText();
                morse = getWord(text);
                output.setText(morse);
                makeSample(morse);
                } else {
                morse = input.getText();
                text = getMorseCode(morse);
                output.setText(text);
                makeSample(input.getText()); //using the processed morse
            }
            playSample();
            return true;
        }
        else if (event.target == wpmChoice) {
            if (arg.equals("30")) wpm = 30;
            else if (arg.equals("40")) wpm = 40;
            else if (arg.equals("50")) wpm = 50;
            else if (arg.equals("60")) wpm = 60;
            else if (arg.equals("70")) wpm = 70;
            else if (arg.equals("80")) wpm = 80;
            else if (arg.equals("90")) wpm = 90;
            else if (arg.equals("100")) wpm = 100;
            else if (arg.equals("110")) wpm = 110;
            else if (arg.equals("120")) wpm = 120;
            else if (arg.equals("130")) wpm = 130;
            else if (arg.equals("140")) wpm = 140;
            else if (arg.equals("150")) wpm = 150;
            else if (arg.equals("160")) wpm = 160;
            else if (arg.equals("170")) wpm = 170;
            else if (arg.equals("180")) wpm = 180;
            else if (arg.equals("190")) wpm = 190;
            else if (arg.equals("200")) wpm = 200;
            //wpm = (event.target.getSelectedIndex() + 1) * 5;
            return true;
        }
        else return super.action(event, arg);
    }
    /********* TEXT TEXT TEXT TEXT TEXT TEXT **/
    
    public boolean isText (String sText) {
        boolean matches = false;
        boolean matches1 = true ;
        String pattern = ("^[._/ \\|-]*$");
        Pattern r = Pattern.compile(pattern);
        Matcher m = r.matcher(sText);
        
        if (m.find()) {
            System.out.println("MorseCode ");
            return matches;
            
            }else {
        System.out.println("Text");}
        return matches1;
    }
    
    
    public String getMorseCode(String text)
    {
        StringBuffer codeWord = new StringBuffer();
        String foo= text.toUpperCase();
        StringTokenizer st = new StringTokenizer(foo," ", true);
        while (st.hasMoreTokens())
        {
            String tStr= st.nextToken();
            if (tStr.compareTo(" ")==0)
            {
                codeWord.append(" ");
            }
            else
            {
                String z=null;
                for(int x=0; x<tStr.length(); x++)
                {
                    z = tStr.substring(x,x+1);
                    int row=0;
                    for(; (row<CODES.length)&&(z.compareTo(CODES[row][0])!=0); row++);
                    if (row==CODES.length) {System.out.println("Cannot find Code for : " +z); }
                    else {codeWord.append(CODES[row][1]+" "); }
                }
                
                z=null;
            }
        }
        
        return codeWord.toString().trim();
    }
    
    public String getWord(String t)
    {
        StringBuffer codeWord = new StringBuffer();
        StringTokenizer st = new StringTokenizer(t," ", true);
        while (st.hasMoreTokens())
        {
            String tStr= st.nextToken();
            
            if (tStr.compareTo(" ")==0)
            {
                //find the next token , if it is also space read the next two tokens
                // else append a space and make the curToken equal to next token
                String nextTok = st.nextToken();
                if (" ".compareTo(nextTok)==0) { codeWord.append(" ");st.nextToken();tStr=null;tStr=st.nextToken();}
                else {tStr=null; tStr=nextTok; }
            }
            if (tStr.compareTo(" ")!=0)
            {
                
                
                int row=0,col=0;
                for(row=0; row<CODES.length; row++)
                {
                    for(col=0;col<CODES[0].length;col++)
                    {
                        if (tStr.compareTo(CODES[row][col])==0)
                        {
                            
                            codeWord.append(CODES[row][0]+" ");
                        }
                    }
                }
                
                
                tStr=null;
            }
            
        }
        
        return codeWord.toString();
        
    }
    
    /********** SOUND SOUND SOUND SOUND SOUND */
    
    public void playSample() {
        AudioDataStream stream = new AudioDataStream(playable);
        AudioPlayer.player.start(stream);
    }
    
    public void makeSample(String morse) {
        char c;
        int dits=0, dahs=0, spcs=0, slashes=0;
        int dahLen = 3;
        int pause1 = 1;
        int pause2 = 3;
        int pause3 = 7;
        int wordLen = 50;
        int ditLen = (int)1000*60/(wpm*wordLen);
        //thousandths of a sec per dit, or 8-byte frames per dit
        
        for (int i = 0; i < morse.length(); i++) {
            c = morse.charAt(i);
            //status += c;
            switch (c) {
                case '.':
                dits++;
                break;
                case '-':
                dahs++;
                break;
                case ' ':
                spcs++;
                break;
                case '/':
                slashes++;
                break;
                //need default
            }
        }
        //status += " "+dits+" "+dahs+" "+spcs+" "+slashes;
        int length = ditLen*8*(dits*(1+pause1)+dahs*(dahLen+pause1)+spcs*(pause2-pause1)+slashes*(pause3-pause1));
        
        sample = new byte[length];
        
        int sPos = 0;
        for (int i = 0; i < morse.length(); i++) {
            c = morse.charAt(i);
            switch (c) {
                case '.':
                addSound(1, sPos, ditLen);
                sPos += (1+pause1)*ditLen*8;
                break;
                case '-':
                addSound(dahLen, sPos, ditLen);
                sPos += (dahLen+pause1)*ditLen*8;
                break;
                case ' ':
                sPos += (pause2-pause1)*ditLen*8;
                break;
                case '/':
                sPos += (pause3-pause1)*ditLen*8;
                break;
            }
        }
        playable = new AudioData(sample);
    }
    
    public void addSound(int units, int sPos, int ditLen) {
        for (int i = 0; i < units*ditLen; i++) {
            sample[sPos+i*8] = (byte)0xA7;
            sample[sPos+i*8+1] = (byte)0x81;
            sample[sPos+i*8+2] = (byte)0xA7;
            sample[sPos+i*8+3] = (byte)0;
            sample[sPos+i*8+4] = (byte)0x59;
            sample[sPos+i*8+5] = (byte)0x7F;
            sample[sPos+i*8+6] = (byte)0x59;
            sample[sPos+i*8+7] = (byte)0;
        }
    }
    
    
    
    
    public static void main(String[] args) {
        MorseApp test = new MorseApp();
        test.setBackground(Color.lightGray);
        test.setLocation(100,100);
        test.setSize(800, 500);
        test.setVisible(true);
        
        
        // TODO code application logic here
    }}



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