J2ME Display Size Example
In the given J2ME Midlet example, we are going to display the size of the
screen. Like a below given image 1, the midlet will print few items on the
screen and the screen size will be displayed at the command prompt (image 2).
Image 1
Image 2
To get the size of the screen, we have used getwidth and getheight method in
our example.
Source Code of DisplaySize.java
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class DisplaySize extends MIDlet{
private Display display;
public void startApp(){
Canvas canvas = new DisplaySizeCanvas();
display = Display.getDisplay(this);
display.setCurrent(canvas);
}
public void pauseApp(){}
public void destroyApp(boolean unconditional){}
}
class DisplaySizeCanvas extends Canvas {
public void paint(Graphics g) {
int width = getWidth();
int height = getHeight();
g.setColor(255, 0, 0);
g.fillRect(0, 0, width, height);
g.setColor(0, 0, 255);
g.drawString("Sandeep Kumar Suman", 0, 0,
Graphics.TOP | Graphics.LEFT);
Font font = g.getFont();
g.drawString("Software Developer", 0,
font.getHeight(), Graphics.TOP | Graphics.LEFT);
g.drawString("Mobile No: +919313985248", width,
height, Graphics.BOTTOM | Graphics.RIGHT);
String str = "Roseindia Tech. Pvt. Ltd.";
font = Font.getFont(Font.FACE_PROPORTIONAL,
Font.STYLE_UNDERLINED, Font.SIZE_LARGE);
g.setFont(font);
g.drawString(str, 0, height/2, Graphics.LEFT |
Graphics.BASELINE);
int x = font.stringWidth(str);
g.setColor(0, 0, 255);
g.setFont(Font.getFont(Font.FACE_PROPORTIONAL,
Font.STYLE_BOLD | Font.STYLE_ITALIC, Font.SIZE_MEDIUM));
g.drawString(" Delhi, India", x, height/2,
Graphics.LEFT | Graphics.BASELINE);
System.out.println("Height Of Display Screen: " + height);
System.out.println("Width Of Display Screen: " + width);
}
}
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