Java Source Codes

Greet on basis of Time.. Ex, say good morning when its morning

package greeting;
import java.awt.*;
import java.util.*;

public class Greeting extends Canvas {
private final static int XPAD = 10;
private final static int YPAD = 10;
private String morning, afternoon, evening;
private boolean border;

public Greeting() {
morning = "Good morning";
afternoon = "Good afternoon";
evening = "Good evening";
border = true;
}

public String getMorning() {
return morning;
}

public void setMorning(String morning) {
this.morning = morning;
adjustSize();
}

public String getAfternoon() {
return afternoon;
}

public void setAfternoon(String afternoon) {
this.afternoon = afternoon;
adjustSize();
}

public String getEvening() {
return evening;
}

public void setEvening(String evening) {
this.evening = evening;
adjustSize();
}

public boolean getBorder() {
return border;
}

public void setBorder(boolean border) {
this.border = border;
repaint();
}

public void setFont(Font font) {
super.setFont(font);
adjustSize();
}

public Dimension getPreferredSize() {
Graphics g = getGraphics();
FontMetrics fm = g.getFontMetrics();
int w = fm.stringWidth(selectGreeting()) + 2*XPAD;
int h = fm.getHeight() + 2*YPAD;
return new Dimension(w, h);
}

private void adjustSize() {
Dimension d = getPreferredSize();
setSize(d.width, d.height);
Component parent = getParent();
if(parent != null) {
parent.invalidate();
parent.doLayout();
}
}

public void paint(Graphics g) {
String greeting = selectGreeting();
Dimension d = getSize();
FontMetrics fm = g.getFontMetrics();
int x = (d.width - fm.stringWidth(greeting))/2;
int y = (d.height + fm.getMaxAscent() -
fm.getMaxDescent())/2;
g.drawString(greeting, x, y);
if(border) {
g.drawRect(0, 0, d.width - 1, d.height - 1);
}
}

private String selectGreeting() {
Calendar calendar = Calendar.getInstance();
int hour = calendar.get(Calendar.HOUR_OF_DAY);
if(hour < 12) {
return morning;
}
else if(hour < 19) {
return afternoon;
}
else {
return evening;
}
}
}

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