"Line nn: ';' expected": This means you moved to a new line without signaling to the compiler
. When your string, or code line, is too long to fit in one line, you may want to split into two lines. Doing that just by pressing the Enter key will confuse the compiler and generate an error. Instead you will need to add the '+' sign. That is split your string into two lines, ending the first with a '+' before moving to the second line.