package TextFileManager; import java.util.ArrayList; import java.util.List; public class TextFileManagerTest { public static void main(String[] args) { // TODO Auto-generated method stub TextFileWriter writer = new TextFileWriter(); TextFileReader reader = new TextFileReader(); List contents = new ArrayList(); contents.add("line-1:11"); contents.add("line-2:22"); contents.add("line-3:33"); writer.writeFile("text.txt", String.join("\n", contents)); System.out.println(reader.readFile("text.txt")); } }