Have you read the Scanner class's API doc? Do you have any questions about the descriptions there of those two methods?
Please post your questions here.
A token is a string of non blank characters surrounded by white spaces.
The current line ends with a newline character.
Can you post the program you are having trouble with?
What I need is to be able to enter several words separated by space.
Use the nextLine method to read all of what is on the current line. It is possible for the current line to only have a newline character which would return an empty string.