Java程序只输出一行代码

I'm having a problem with my java program for my class. I have to create a program that prompts user for the path and name of a output file that will have lines of coefficients of a equation that my program will take, and calculate the solutions using the quadratic formula. So far I think everything is right except for my output file. Say I have a input file with 3 lines of coefficients, my program will show the solutions in the console stream, but will only show 1 line of solutions on my output file. This is my first java class so bare with me! Thanks for the help in advance! I'm having a problem with my java program for m