Print Triangle using "*"

This example is for the beginners. If you want to draw a traingle using "*" then use the code given below to print star in triangle shape :

import java.io.*;

class startriangle{
public static void main(String[] args) {
try{
BufferedReader object = new BufferedReader(new InputStreamReader(System.in));
System.out.println("enter the number");
int a= Integer.parseInt(object.readLine());
for (int i=1; i<'a;i++ ){
for (int j=1; j<=i;j++ ){
System.out.print("*");
}
System.out.println("");
}
}
catch(Exception e){}
}
}

Swing Tutorials : Swing Toolbar Example

Have you see some small icons on top in Microsoft Word, Excel or other application. It is known as shortcut toolbar. Here is the example how to create toolbar using Java Swing :

import javax.swing.*;
import java.awt.*;

public class ToolbarExample{
public static void main(String[] args) {
JFrame frame = new JFrame("Toolbar Example Using Java Swing");
JToolBar toolbar = new JToolBar("toolBar", JToolBar.HORIZONTAL);
JButton cutbutton = new JButton(new ImageIcon("cut.gif"));
toolbar.add(cutbutton);
JButton copybutton = new JButton(new ImageIcon("copy.gif"));
toolbar.add(copybutton);
JButton pastebutton = new JButton(new ImageIcon("paste.gif"));
toolbar.add(pastebutton);
frame.getContentPane().add(toolbar,BorderLayout.NORTH);
frame.setUndecorated(true);
frame.getRootPane().setWindowDecorationStyle(JRootPane.PLAIN_DIALOG);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(500,400);
frame.setVisible(true);
}
}