How to download an image from a web server

You can download an image from a web server using javax.microedition.io.HttpConnection in J2ME.

The folowing methods shows you how to do this. getImageFromUrl(...) method gets an url as a parameter and returns an javax.microedition.lcdui.Image. This is done with the help of getDataFromUrl(...) method.

public static Image getImageFromUrl(String url) {
Image img = null;

try
{
String imageData = getDataFromUrl(url);
img = Image.createImage(imageData.getBytes(), 0,
imageData.length() );
}
catch(Exception e1) {
e1.printStackTrace();
}

return img;
}

public static String getDataFromUrl(String url)
throws IOException {

StringBuffer b = new StringBuffer();
InputStream is = null;
HttpConnection c = null;

long len = 0 ;
int ch = 0;
c = (HttpConnection)Connector.open(url);
is = c.openInputStream();
len = c.getLength();
if( len != -1) {
// Read exactly Content-Length bytes
for(int i =0 ; i <>)
if((ch = is.read()) != -1) {
b.append((char) ch);
}
} else {
//Read until the connection is closed.
while ((ch = is.read()) != -1) {
len = is.available() ;
b.append((char)ch);
}
}

is.close();
c.close();
return b.toString();
}