Friends, I am doing project in Java Mail API. Today I done code to send attachment. But that code work only when I put a file to attach. Normally attachment is optional, but if I not give filename to attach the coding is not working. Is there any reason for this specially. I also, check the condition as below, if(filename!="") { //code for send mime type } else { //code for send text type } Please clear my problem and also advance Thank you for all.    More>>

			

			

			if(filename!="")
			

			{
			

			//code for send mime type
			

			}
			

			else
			

			{
			

			//code for send text type
			

			}