1) given a scanner reference variable named input that has been associated with an input source consisting of a sequence of lines of text and an int variable named count, write the code necessary to count the lines of text in the input source and place that value into count.

2) given a scanner reference variable named input that has been associated with an input source consisting of a sequence of lines, write the code necessary to read in every line and print it out on its own line.

3) given a scanner reference variable named input that has been associated with an input source consisting of a sequence of lines, write the code necessary to read in every line and print them all out on a single line, separated by a space. there should not be a trailing space at the end of the line.