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An easy program in java to show a fun of rows

Problem: write a program that draws on a java canvas sized (800,500):

• 7 rows more and more thicker ( we start with a thickness 0)
• A fan of seven rows more and more thicker (we start with a thickness 0)

Java code for the exercise:

import java.awt.*;

class RigheSpesse  {

public static void main(String[] args) {
Frame f = new Frame("A graphic activity : Thick row"); // creation of a frame with a title (frame= form)
f.setSize(800,500);                // initial dimension  (WIDTH/HEIGHT)
f.setLocation(50,30);            // origin respect to the display
//passo in input al canvas un nome
String nome;
if (args.length == 0) nome="Pippo&Pluto";
else nome = args[0];
//is an  anonymous object of type canvas prove

//an alternative coul be:
//      CanvasRighe c= new CanvasRighe();

f.setVisible(true);
}
}

class CanvasRighe extends Canvas {

//internal variable
String nome;

//constructor
public CanvasRighe(String nome) {
this.nome=nome;
}

public void paint(Graphics g) { //overriding of paint of Canvas
// 1 - declare an object g2 of type  Graphics2D and create it assigning
//     g "converted" in Graphics2D (g was Graphics)
Graphics2D g2 =(Graphics2D) g;
// 2 - draw a row(diagonal) blue
g2.setColor(Color.BLUE);
g2.drawLine(0,0,getWidth(),getHeight()); // from the top-links to botton-right
// 3 - draw  7 parallel row more and more thicker
g2.setColor(new Color(54,0,59));
for (int i=0; i <=7; i++) {
g2.setStroke(new BasicStroke(2.0f * i)); // variable thickness
g2.drawLine(100 + 20*i,20,20 + 20*i,200);
}
// 4 - draw 7 parallel row more and more thicker, that start from the same point (700,350)

g2.setColor(new Color(160,80,40));
for (int i=0; i <=7; i++) {
g2.setStroke(new BasicStroke(1.0f * i)); // spessore variabile
g2.drawLine(40*i + 300,20,700, 350);
}
// 5 - write the name
g2.setColor(new Color(60,180,150));
g2.setFont(new Font("TimesRoman",Font.BOLD + Font.ITALIC,25));
g2.drawString(nome,20,370);
g2.setStroke(new BasicStroke(3.0f ));
int lu=nome.length();
g2.drawLine(20,400, lu * 16, 400);
}
}

Short url:   http://multidict.net/cs/1279