Teddy's q&a

Question

Hi again guys... I thought it'd be pretty stupid of me that whenever I would run into a problem I would make a new thread about it. Hence, this is the only thread I am ever going to post in regarding my own questions.
I would like to start off with a small question. I have the following:
    private int getButtonIndex(Object o)
        for(int i=0;i<b.length;i++)
            if(b==o)
return i;
return -1;
} //Just wrote this to clarify, has nothing to do with my problem
public void actionPerformed(ActionEvent e)
int buttonIndex = getButtonIndex(e.getSource());
if(buttonIndex>-1 && buttonIndex<24)
this.s[buttonIndex].play();
guitarstring[0]=s[buttonIndex];
Now this code works perfectly. However, I want that whenever I play a sound (this.s[buttonIndex].play();) I want all other sounds that might be playing to stop playing. Is this possible? Thanks in advance!
/Teddy

Answer 1

Well it's a strange thing really... I'm sorry for not being more informative in my last post, I had other things on my mind I suppose. The code you gave me serves its purpose but it screwed up alot of other methods for a reason I can not find :S
This is my entire code, the problems are described in the comments (brace yourselves!):
import java.awt.*;
import java.awt.event.*;
import java.applet.*;
public class JavaForum extends Applet implements ActionListener
    Button[] b = new Button[150];
    Button [] b_function = new Button[8];
    Button[] b_chord = new Button[7];
    AudioClip[] s = new AudioClip[b.length];
    AudioClip[] guitarstring = new AudioClip[6];
    Color c1 = new Color(213,174,124,0);
    Color c2 = new Color(171,155,138,0);
    TextField ackord, delay;
    Font font = new Font("Times New Roman", Font.PLAIN, 8);
    //String values which represent the corresponding notes of the AudioClips
    String[] st_b = {"B","C","C#","D","D#","E","F","F#","G","G#","A","A#","B","C","C#","D","D#","E","F","F#","G","G#","A","A#","B"};
    String[] st_g = {"G","G#","A","A#","B","C","C#","D","D#","E","F","F#","G","G#","A","A#","B","C","C#","D","D#","E","F","F#","G"};
    String[] st_d = {"D","D#","E","F","F#","G","G#","A","A#","B","C","C#","D","D#","E","F","F#","G","G#","A","A#","B","C","C#","D"};
    String[] st_a = {"A","A#","B","C","C#","D","D#","E","F","F#","G","G#","A","A#","B","C","C#","D","D#","E","F","F#","G","G#","A"};
    String[] st_e = {"E","F","F#","G","G#","A","A#","B","C","C#","D","D#","E","F","F#","G","G#","A","A#","B","C","C#","D","D#","E"};
    int[] xpos = {0,48,93,133,169,202,234,264,292,318,344,370,393,414,435,456,476,496,516,535,552,569,583,597,609};
    int delay1;
    Image g_greppbrada;
    //Creates button for ONE guitar string
    private void addButtons(int startnr, int ypos, String[] notes)
        for(int i=startnr;i<(startnr+25);i++)
          b[i] = new Button(notes[i-startnr]);
          b.addActionListener(this);
add(b[i]);
b[i].setLocation(xpos[i-startnr],ypos);
b[i].setSize(10, 10);
b[i].setFont(font);
b[i].setBackground(c2);
b[i].setForeground(Color.black);
//Method which help create buttons with different functions
private void addButtonFunction(int index, String st_name, int x, int y, int w, int h)
b_function[index] = new Button(st_name);
b_function[index].addActionListener(this);
add(b_function[index]);
b_function[index].setLocation(x,y);
b_function[index].setSize(w, h);
//b_function[index].setFont(font1);
//Function which gets an index value from a specified object
private int getButtonIndex(Object o)
for(int i=0;i<b.length;i++)
if(b[i]==o)
return i;
return -1;
//Method which delays the playing of an audioclip
public void delay(int delaytime)
try
Thread.sleep(delaytime);
catch (Exception e)
System.out.println("Failed to sleep - " + e);
//Method which plays all elements in the guitarstring array. Takes the delay value into consideration.
public void strumChord()
for(int i = 0; i<guitarstring.length; i++)
this.guitarstring[i].play();
this.delay(delay1);
//The famous "Stairway to Heaven" intro -- in Java! Haha...
public void stairWay()
this.s[82].play();
this.delay(delay1);
this.s[55].play();
this.delay(delay1);
this.s[30].play();
this.delay(delay1);
this.s[5].play();
this.delay(delay1);
this.s[81].play();
this.s[7].play();
this.delay(delay1);
this.s[30].play();
this.delay(delay1);
this.s[55].play();
this.delay(delay1);
this.s[7].play();
this.delay(delay1);
this.s[80].play();
this.s[8].play();
this.delay(delay1);
this.s[30].play();
this.delay(delay1);
this.s[55].play();
this.delay(delay1);
this.s[8].play();
this.delay(delay1);
this.s[79].play();
this.s[2].play();
this.delay(delay1);
this.s[28].play();
this.delay(delay1);
this.s[52].play();
this.delay(delay1);
this.s[2].play();
this.delay(delay1);
this.s[78].play();
this.s[0].play();
this.delay(delay1);
this.s[26].play();
this.delay(delay1);
this.s[52].play();
this.delay(delay1);
this.s[26].play();
this.delay(delay1*2);
this.s[0].play();
this.delay(delay1);
this.s[26].play();
this.delay(delay1);
this.s[52].play();
this.delay(delay1);
this.s[102].play();
this.s[75].play();
this.s[50].play();
this.delay(delay1);
this.s[102].stop();
this.s[75].stop();
this.s[50].stop();
this.s[100].play();
this.s[77].play();
this.s[52].play();
this.s[26].play();
this.delay(delay1);
this.s[100].play();
this.s[77].play();
this.s[52].play();
this.s[26].play();
//Method which "forms" a chord by giving the six "guitar strings"
//(the guitarstring array) different audio values
public void formChord(int e, int b, int g, int d, int a, int e2)
guitarstring[0] = s[e];
guitarstring[1] = s;
guitarstring[2] = s[g];
guitarstring[3] = s[d];
guitarstring[4] = s[a];
guitarstring[5] = s[e2];
//Method which creates a button which plays a predefined chord
private void addChordButton(int index, String chord, int x, int y)
b_chord[index] = new Button(chord);
b_chord[index].addActionListener(this);
add(b_chord[index]);
b_chord[index].setLocation(x,y);
b_chord[index].setSize(40,20);
//Method which creates textfields with various functions
private void addTextFieldFunction(TextField name, int num, int x, int y, int w, int h, String text)
name = new TextField(4);
add(name);
name.setSize(w,h);
name.setLocation(x,y);
name.setText(text);
name.addActionListener(this);
public void init()
setLayout(null);
g_greppbrada = this.getImage(getDocumentBase (),"grafik/greppbrada.png");
//Various textfield functions
//this.addTextFieldFunction(ackord, 2, 0, 84, 40, 20, "E");
//this.addTextFieldFunction(delay, 4, 160, 84, 40, 20, "200");
//Another strange thing: this one works, but not the above one. How very odd!
delay = new TextField(4);
add(delay);
delay.setSize(40,20);
delay.setLocation(536,105);
delay.setText("200");
delay.setBackground(c1);
//delay.setFont(font1);
delay.addActionListener(this);
//Adds all button elements from the "b" array. New clause for new corresponding guitar string.
this.addButtons(0, 3, st_e);
this.addButtons(25, 15, st_b);
this.addButtons(50, 30, st_g);
this.addButtons(75, 44, st_d);
this.addButtons(100, 58, st_a);
this.addButtons(125, 72, st_e);
//Adds buttons which will play predefined chords
this.addChordButton(0, "E", 80, 104);
//Adds various button functions
this.addButtonFunction(0, "Strum", 581, 105, 40, 20);
this.addButtonFunction(1, "Tryck h�r om du heter Tomas", 140, 104, 170, 20);
//I should really simplify this...
this.addButtonFunction(2, "", 650, 7, 80, 2);
b_function[2].addMouseListener(new MouseAdapter()
public void mouseEntered(MouseEvent me)
guitarstring[0].play();
this.addButtonFunction(3, "", 650, 20, 80, 2);
b_function[3].addMouseListener(new MouseAdapter()
public void mouseEntered(MouseEvent me)
guitarstring[1].play();
this.addButtonFunction(4, "", 650, 34, 80, 2);
b_function[4].addMouseListener(new MouseAdapter()
public void mouseEntered(MouseEvent me)
guitarstring[2].play();
this.addButtonFunction(5, "", 650, 49, 80, 2);
b_function[5].addMouseListener(new MouseAdapter()
public void mouseEntered(MouseEvent me)
guitarstring[3].play();
this.addButtonFunction(6, "", 650, 63, 80, 2);
b_function[6].addMouseListener(new MouseAdapter()
public void mouseEntered(MouseEvent me)
guitarstring[4].play();
this.addButtonFunction(7, "", 650, 77, 80, 2);
b_function[7].addMouseListener(new MouseAdapter()
public void mouseEntered(MouseEvent me)
guitarstring[5].play();
//All AudioClip-objects are given corresponding audiofiles (with the same name)
for(int i=0;i<s.length;i++)
s[i] = this.getAudioClip(getDocumentBase(), "sound/s"+i+".wav");
//The inital values for the guitar strings
for(int i=0;i<guitarstring.length;i++)
guitarstring[i] = s[25*i];
//Paints the fret board
public void paint(Graphics g)
g.drawImage(g_greppbrada,0,0,this);
g.drawString("Strum delay",536,100);
g.setColor(Color.red);
g.drawString("ms",604,100);
this.showStatus("F�r sn�l f�r att k�pa en riktig gitarr?");
public void actionPerformed(ActionEvent e)
//Relates Button index to correpsonding AudioClip index and allots an index interval's
//corresponding guitar string the last played AudioClip
int buttonIndex = getButtonIndex(e.getSource());
//If I add this instead of the code below all my buttons and textfields
//with actionlisteners stop working
this.s[buttonIndex].play();
guitarstring[buttonIndex / 25]=s[buttonIndex];
/*if(buttonIndex>-1 && buttonIndex<24)
this.s[buttonIndex].play();
guitarstring[0]=s[buttonIndex];
else if(buttonIndex>24 && buttonIndex<49)
this.s[buttonIndex].play();
guitarstring[1]=s[buttonIndex];
else if(buttonIndex>49 && buttonIndex<74)
this.s[buttonIndex].play();
guitarstring[2]=s[buttonIndex];
else if(buttonIndex>74 && buttonIndex<99)
this.s[buttonIndex].play();
guitarstring[3]=s[buttonIndex];
else if(buttonIndex>99 && buttonIndex<124)
this.s[buttonIndex].play();
guitarstring[4]=s[buttonIndex];
else if(buttonIndex>124 && buttonIndex<150)
this.s[buttonIndex].play();
guitarstring[5]=s[buttonIndex];
delay1 = Integer.parseInt(delay.getText());
//Various button functions
if (e.getSource() == b_function[0]) this.strumChord();
if (e.getSource() == b_function[1]) this.stairWay();
//This textfield does not serve its purpose for some reason
/*if (e.getSource() == ackord)
if(ackord.getText() == "E" || ackord.getText() == "e")
this.formChord(0,25,51,77,102,125);
this.strumChord();
if (e.getSource() == delay)
this.strumChord();
//Knappar vilka spelar f�rbest�mda ackord
for(int i = 0; i < b_chord.length; i++)
if (e.getSource() == b_chord)
this.formChord(0,25,51,77,102,125);
this.strumChord();
As seen it should work, but it doesn't...