Need help in adding no of buttons in java.

Try this program,You will get what you want

import java.applet.*;
import java.awt.*;
import javax.swing.*;
/*<APPLET CODE="kk.java" HEIGHT=300 WIDTH=400></APPLET>*/
public class kk extends JApplet
{ 
   public void init ()
   { 
    for(int i=0;i<20;i++)
        {
        JButton b;
        setLayout(new FlowLayout());
        b=new JButton("click");
             add(b);
        }
   }
}

check this code goyal.
.

import java.applet.*;
import java.awt.*;
import javax.swing.*;
/*<APPLET CODE="ss.java" HEIGHT=300 WIDTH=400></APPLET>*/
public class ss extends JApplet
{
JButton b;
public void init ()
{
for(int i=0;i<20;i++)
{
setLayout(new FlowLayout());
//b.setSize(4,90);//applet not initialised.
b=new JButton("click");
//b.setSize(4,90);//not works on button.
add(b);
}
}
public void paint(Graphics g)
{
for(int j=0;j<=20;j++)
{
b.setSize(4,60);//if you want to use setSize() only option to use there.
}
}
}

actually i want to apply setSize function on every button.
here setSize work only on the last one.
That's why i want to take the array of Button.But i dont know why it will display errors.

Try this code and say cheese 😀

import java.applet.*;
import java.awt.*;
import javax.swing.*;
/*<APPLET CODE="kk.java" HEIGHT=300 WIDTH=400></APPLET>*/
public class kk extends JApplet
{
    JButton b[]=new JButton[20];
    public void init ()
    {
    for(int i=0;i<20;i++)
    {
        setLayout(new FlowLayout());
        b[i]=new JButton("click");
        add(b[i]);
        
    }
    }
    
public void paint(Graphics g)
{
    for(int j=0;j<20;j++)
{
b[j].setSize(4,90);
}
}    
}

Oh set..!!
what a silly mistake i done.
Well nice solution goyal..!!

Actually the problem was that we were just creating array ,not button objects.

check this code goyal.

import java.applet.*;
import java.awt.*;
import javax.swing.*;
/*<APPLET CODE="ss.java" HEIGHT=300 WIDTH=400></APPLET>*/
public class ss extends JApplet
{
JButton b[]=new JButton[90];
public void init ()
{
setLayout(new GridLayout(1,0));
for(int i=0;i<90;i++)
{
b=new JButton();
add(b);

}
}

public void paint(Graphics g)
{
for(int j=0;j<90;j++)
{
b[j].setSize(5,5);
}
}
}

actually i don't know the function to create the event line(you must seen event line in any music player like vlc).
so i decided to create my own event line function.
If you goone clicked it on any particular point of event line you song will forwarded to that point(i want to do this with the help of time of the song at that point).
.
I must posted here on CE when i completed this.
Thanks for the help goyal...!!