how to set size of buttons on frame

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November 15, 2010 at 1:14 PM

Hi Friend,

Using the setPreferredSize(new Dimension(40,15)); method, you can set the button size in awt in java.

Here is your required code:

import java.awt.*; import java.awt.event.*; import java.util.regex.*; class ButtonSize extends Frame{ Label l; ButtonSize(){ Label lab=new Label("Enter number to find its factorial: "); final TextField text=new TextField(20); Button b=new Button("Find"); Panel p=new Panel(); l=new Label(); Panel pan=new Panel(); pan.add(l); b.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent e){ String input=text.getText(); Pattern p = Pattern.compile("[A-Z,a-z,&%$#@!()*^]"); Matcher m = p.matcher(input); if(m.find()){ l.setText("*Enter only numeric value!"); l.setSize(250,20); l.setForeground(Color.RED); ltext.setText(""); } else if(input.equals("")){ l.setText("*Enter value!"); l.setSize(250,20); l.setForeground(Color.RED); } else{ int num=Integer.parseInt(input); long fac=num; for(int i=num;i>1;i--){ fac=fac*(i-1); } System.out.println(fac); l.setText("Factorial Of Number "+input+" is: "+Long.toString(fac)); l.setSize(250,20); l.setForeground(Color.BLUE); } } }); p.add(lab); p.add(text); p.add(b); b.setPreferredSize(new Dimension(40,15)); add(p,BorderLayout.NORTH); add(pan,BorderLayout.SOUTH); pack(); setVisible(true); } public static void main(String[] args){ new ButtonSize(); } }

Thanks

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