i m MCA 6th sem student. now i have 2 do a 6 months project training. can anyone tell me which language should i prefer according to industry requirement.which sort of project shuld i choose.can i know the name of some companies that will provide me that training

You need to choose a language of your preference. Again you need to decide about your project ,i believe you are matured enough to decide all that. So far as training from companies is concerned, no company is going to train students for 6th sem projects. All those who claim to do are really institutes in disguise. They will charge you some money and give you some project , which they have already sold to hundreds of other students like you.