Hi Kanimozhi,
for the client-side implementation you can use the FileUploader-Control.
// create the FileUploader control
var oSimpleFileUploader =new sap.ui.commons.FileUploader({
uploadUrl :"../../../../../upload", // URL to submit the form to (your servlet)
name:"simpleUploader", // name of the input type=file element within the form
uploadOnChange:true // immediately upload the file after selection
});
// attach it to the page
oSimpleFileUploader.placeAt("sample1");
An example for a server-side Java implementation can be found here.
Regards Michael